CVE-2022-40761: mTower/tee_svc_cryp.c at efd36709306a9afcca5b4782499d01be0c7a02a5 · Samsung/mTower

// SPDX-License-Identifier: BSD-2-Clause /* * Copyright © 2014, STMicroelectronics International N.V. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <assert.h> #include <crypto/crypto.h> #include <kernel/tee_ta_manager.h> //#include <mm/tee_mmu.h> //#include <string_ext.h> #include <string.h> #include <sys/queue.h> #include <tee_api_types.h> #include <tee/tee_cryp_utl.h> #include <tee/tee_obj.h> #include <tee/tee_svc_cryp.h> #include <tee/tee_svc.h> #include <trace.h> #include <utee_defines.h> #include <util.h> #include <kernel/user_ta.h> #if defined(CFG_CRYPTO_HKDF) || defined(CFG_CRYPTO_CONCAT_KDF) || \ defined(CFG_CRYPTO_PBKDF2) #include <tee_api_defines_extensions.h> #endif #if defined(CFG_CRYPTO_HKDF) #include <tee/tee_cryp_hkdf.h> #endif #if defined(CFG_CRYPTO_CONCAT_KDF) #include <tee/tee_cryp_concat_kdf.h> #endif #if defined(CFG_CRYPTO_PBKDF2) #include <tee/tee_cryp_pbkdf2.h> #endif typedef void (*tee_cryp_ctx_finalize_func_t) (void *ctx, uint32_t algo); struct tee_cryp_state { TAILQ_ENTRY(tee_cryp_state) link; uint32_t algo; uint32_t mode; vaddr_t key1; vaddr_t key2; void *ctx; tee_cryp_ctx_finalize_func_t ctx_finalize; }; struct tee_cryp_obj_secret { uint32_t key_size; uint32_t alloc_size; /* * Pseudo code visualize layout of structure * Next follows data, such as: * uint8_t data[alloc_size] * key_size must never exceed alloc_size */ }; #define TEE_TYPE_ATTR_OPTIONAL 0x0 #define TEE_TYPE_ATTR_REQUIRED 0x1 #define TEE_TYPE_ATTR_OPTIONAL_GROUP 0x2 #define TEE_TYPE_ATTR_SIZE_INDICATOR 0x4 #define TEE_TYPE_ATTR_GEN_KEY_OPT 0x8 #define TEE_TYPE_ATTR_GEN_KEY_REQ 0x10 /* Handle storing of generic secret keys of varying lengths */ #define ATTR_OPS_INDEX_SECRET 0 /* Convert to/from big-endian byte array and provider-specific bignum */ #define ATTR_OPS_INDEX_BIGNUM 1 /* Convert to/from value attribute depending on direction */ #define ATTR_OPS_INDEX_VALUE 2 struct tee_cryp_obj_type_attrs { uint32_t attr_id; uint16_t flags; uint16_t ops_index; uint16_t raw_offs; uint16_t raw_size; }; #define RAW_DATA(_x, _y) \ .raw_offs = offsetof(_x, _y), .raw_size = MEMBER_SIZE(_x, _y) static const struct tee_cryp_obj_type_attrs tee_cryp_obj_secret_value_attrs[] = { { .attr_id = TEE_ATTR_SECRET_VALUE, .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_SIZE_INDICATOR, .ops_index = ATTR_OPS_INDEX_SECRET, .raw_offs = 0, .raw_size = 0 }, }; //static const struct tee_cryp_obj_type_attrs tee_cryp_obj_rsa_pub_key_attrs[] = { // { // .attr_id = TEE_ATTR_RSA_MODULUS, // .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_SIZE_INDICATOR, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct rsa_public_key, n) // }, // // { // .attr_id = TEE_ATTR_RSA_PUBLIC_EXPONENT, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct rsa_public_key, e) // }, //}; // //static const struct tee_cryp_obj_type_attrs tee_cryp_obj_rsa_keypair_attrs[] = { // { // .attr_id = TEE_ATTR_RSA_MODULUS, // .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_SIZE_INDICATOR, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct rsa_keypair, n) // }, // // { // .attr_id = TEE_ATTR_RSA_PUBLIC_EXPONENT, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct rsa_keypair, e) // }, // // { // .attr_id = TEE_ATTR_RSA_PRIVATE_EXPONENT, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct rsa_keypair, d) // }, // // { // .attr_id = TEE_ATTR_RSA_PRIME1, // .flags = TEE_TYPE_ATTR_OPTIONAL_GROUP, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct rsa_keypair, p) // }, // // { // .attr_id = TEE_ATTR_RSA_PRIME2, // .flags = TEE_TYPE_ATTR_OPTIONAL_GROUP, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct rsa_keypair, q) // }, // // { // .attr_id = TEE_ATTR_RSA_EXPONENT1, // .flags = TEE_TYPE_ATTR_OPTIONAL_GROUP, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct rsa_keypair, dp) // }, // // { // .attr_id = TEE_ATTR_RSA_EXPONENT2, // .flags = TEE_TYPE_ATTR_OPTIONAL_GROUP, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct rsa_keypair, dq) // }, // // { // .attr_id = TEE_ATTR_RSA_COEFFICIENT, // .flags = TEE_TYPE_ATTR_OPTIONAL_GROUP, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct rsa_keypair, qp) // }, //}; // //static const struct tee_cryp_obj_type_attrs tee_cryp_obj_dsa_pub_key_attrs[] = { // { // .attr_id = TEE_ATTR_DSA_PRIME, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dsa_public_key, p) // }, // // { // .attr_id = TEE_ATTR_DSA_SUBPRIME, // .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_SIZE_INDICATOR, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dsa_public_key, q) // }, // // { // .attr_id = TEE_ATTR_DSA_BASE, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dsa_public_key, g) // }, // // { // .attr_id = TEE_ATTR_DSA_PUBLIC_VALUE, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dsa_public_key, y) // }, //}; // //static const struct tee_cryp_obj_type_attrs tee_cryp_obj_dsa_keypair_attrs[] = { // { // .attr_id = TEE_ATTR_DSA_PRIME, // .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_GEN_KEY_REQ, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dsa_keypair, p) // }, // // { // .attr_id = TEE_ATTR_DSA_SUBPRIME, // .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_SIZE_INDICATOR | // TEE_TYPE_ATTR_GEN_KEY_REQ, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dsa_keypair, q) // }, // // { // .attr_id = TEE_ATTR_DSA_BASE, // .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_GEN_KEY_REQ, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dsa_keypair, g) // }, // // { // .attr_id = TEE_ATTR_DSA_PRIVATE_VALUE, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dsa_keypair, x) // }, // // { // .attr_id = TEE_ATTR_DSA_PUBLIC_VALUE, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dsa_keypair, y) // }, //}; // //static const struct tee_cryp_obj_type_attrs tee_cryp_obj_dh_keypair_attrs[] = { // { // .attr_id = TEE_ATTR_DH_PRIME, // .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_SIZE_INDICATOR | // TEE_TYPE_ATTR_GEN_KEY_REQ, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dh_keypair, p) // }, // // { // .attr_id = TEE_ATTR_DH_BASE, // .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_GEN_KEY_REQ, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dh_keypair, g) // }, // // { // .attr_id = TEE_ATTR_DH_PUBLIC_VALUE, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dh_keypair, y) // }, // // { // .attr_id = TEE_ATTR_DH_PRIVATE_VALUE, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dh_keypair, x) // }, // // { // .attr_id = TEE_ATTR_DH_SUBPRIME, // .flags = TEE_TYPE_ATTR_OPTIONAL_GROUP | TEE_TYPE_ATTR_GEN_KEY_OPT, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct dh_keypair, q) // }, // // { // .attr_id = TEE_ATTR_DH_X_BITS, // .flags = TEE_TYPE_ATTR_GEN_KEY_OPT, // .ops_index = ATTR_OPS_INDEX_VALUE, // RAW_DATA(struct dh_keypair, xbits) // }, //}; #if defined(CFG_CRYPTO_HKDF) static const struct tee_cryp_obj_type_attrs tee_cryp_obj_hkdf_ikm_attrs[] = { { .attr_id = TEE_ATTR_HKDF_IKM, .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_SIZE_INDICATOR, .ops_index = ATTR_OPS_INDEX_SECRET, .raw_offs = 0, .raw_size = 0 }, }; #endif #if defined(CFG_CRYPTO_CONCAT_KDF) static const struct tee_cryp_obj_type_attrs tee_cryp_obj_concat_kdf_z_attrs[] = { { .attr_id = TEE_ATTR_CONCAT_KDF_Z, .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_SIZE_INDICATOR, .ops_index = ATTR_OPS_INDEX_SECRET, .raw_offs = 0, .raw_size = 0 }, }; #endif #if defined(CFG_CRYPTO_PBKDF2) static const struct tee_cryp_obj_type_attrs tee_cryp_obj_pbkdf2_passwd_attrs[] = { { .attr_id = TEE_ATTR_PBKDF2_PASSWORD, .flags = TEE_TYPE_ATTR_REQUIRED | TEE_TYPE_ATTR_SIZE_INDICATOR, .ops_index = ATTR_OPS_INDEX_SECRET, .raw_offs = 0, .raw_size = 0 }, }; #endif //static const struct tee_cryp_obj_type_attrs tee_cryp_obj_ecc_pub_key_attrs[] = { // { // .attr_id = TEE_ATTR_ECC_PUBLIC_VALUE_X, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct ecc_public_key, x) // }, // // { // .attr_id = TEE_ATTR_ECC_PUBLIC_VALUE_Y, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct ecc_public_key, y) // }, // // { // .attr_id = TEE_ATTR_ECC_CURVE, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_VALUE, // RAW_DATA(struct ecc_public_key, curve) // }, //}; // //static const struct tee_cryp_obj_type_attrs tee_cryp_obj_ecc_keypair_attrs[] = { // { // .attr_id = TEE_ATTR_ECC_PRIVATE_VALUE, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct ecc_keypair, d) // }, // // { // .attr_id = TEE_ATTR_ECC_PUBLIC_VALUE_X, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct ecc_keypair, x) // }, // // { // .attr_id = TEE_ATTR_ECC_PUBLIC_VALUE_Y, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_BIGNUM, // RAW_DATA(struct ecc_keypair, y) // }, // // { // .attr_id = TEE_ATTR_ECC_CURVE, // .flags = TEE_TYPE_ATTR_REQUIRED, // .ops_index = ATTR_OPS_INDEX_VALUE, // RAW_DATA(struct ecc_keypair, curve) // }, //}; struct tee_cryp_obj_type_props { TEE_ObjectType obj_type; uint16_t min_size; /* may not be smaller than this */ uint16_t max_size; /* may not be larger than this */ uint16_t alloc_size; /* this many bytes are allocated to hold data */ uint8_t quanta; /* may only be an multiple of this */ uint8_t num_type_attrs; const struct tee_cryp_obj_type_attrs *type_attrs; }; #define PROP(obj_type, quanta, min_size, max_size, alloc_size, type_attrs) \ { (obj_type), (min_size), (max_size), (alloc_size), (quanta), \ ARRAY_SIZE(type_attrs), (type_attrs) } static const struct tee_cryp_obj_type_props tee_cryp_obj_props[] = { PROP(TEE_TYPE_AES, 64, 128, 256, /* valid sizes 128, 192, 256 */ 256 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_secret_value_attrs), PROP(TEE_TYPE_DES, 56, 56, 56, /* * Valid size 56 without parity, note that we still allocate * for 64 bits since the key is supplied with parity. */ 64 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_secret_value_attrs), PROP(TEE_TYPE_DES3, 56, 112, 168, /* * Valid sizes 112, 168 without parity, note that we still * allocate for with space for the parity since the key is * supplied with parity. */ 192 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_secret_value_attrs), PROP(TEE_TYPE_HMAC_MD5, 8, 64, 512, 512 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_secret_value_attrs), PROP(TEE_TYPE_HMAC_SHA1, 8, 80, 512, 512 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_secret_value_attrs), PROP(TEE_TYPE_HMAC_SHA224, 8, 112, 512, 512 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_secret_value_attrs), PROP(TEE_TYPE_HMAC_SHA256, 8, 192, 1024, 1024 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_secret_value_attrs), PROP(TEE_TYPE_HMAC_SHA384, 8, 256, 1024, 1024 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_secret_value_attrs), PROP(TEE_TYPE_HMAC_SHA512, 8, 256, 1024, 1024 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_secret_value_attrs), PROP(TEE_TYPE_GENERIC_SECRET, 8, 0, 4096, 4096 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_secret_value_attrs), #if defined(CFG_CRYPTO_HKDF) PROP(TEE_TYPE_HKDF_IKM, 8, 0, 4096, 4096 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_hkdf_ikm_attrs), #endif #if defined(CFG_CRYPTO_CONCAT_KDF) PROP(TEE_TYPE_CONCAT_KDF_Z, 8, 0, 4096, 4096 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_concat_kdf_z_attrs), #endif #if defined(CFG_CRYPTO_PBKDF2) PROP(TEE_TYPE_PBKDF2_PASSWORD, 8, 0, 4096, 4096 / 8 + sizeof(struct tee_cryp_obj_secret), tee_cryp_obj_pbkdf2_passwd_attrs), #endif // PROP(TEE_TYPE_RSA_PUBLIC_KEY, 1, 256, 2048, // sizeof(struct rsa_public_key), // tee_cryp_obj_rsa_pub_key_attrs), // // PROP(TEE_TYPE_RSA_KEYPAIR, 1, 256, 2048, // sizeof(struct rsa_keypair), // tee_cryp_obj_rsa_keypair_attrs), // // PROP(TEE_TYPE_DSA_PUBLIC_KEY, 64, 512, 3072, // sizeof(struct dsa_public_key), // tee_cryp_obj_dsa_pub_key_attrs), // // PROP(TEE_TYPE_DSA_KEYPAIR, 64, 512, 3072, // sizeof(struct dsa_keypair), // tee_cryp_obj_dsa_keypair_attrs), // // PROP(TEE_TYPE_DH_KEYPAIR, 1, 256, 2048, // sizeof(struct dh_keypair), // tee_cryp_obj_dh_keypair_attrs), // // PROP(TEE_TYPE_ECDSA_PUBLIC_KEY, 1, 192, 521, // sizeof(struct ecc_public_key), // tee_cryp_obj_ecc_pub_key_attrs), // // PROP(TEE_TYPE_ECDSA_KEYPAIR, 1, 192, 521, // sizeof(struct ecc_keypair), // tee_cryp_obj_ecc_keypair_attrs), // // PROP(TEE_TYPE_ECDH_PUBLIC_KEY, 1, 192, 521, // sizeof(struct ecc_public_key), // tee_cryp_obj_ecc_pub_key_attrs), // // PROP(TEE_TYPE_ECDH_KEYPAIR, 1, 192, 521, // sizeof(struct ecc_keypair), // tee_cryp_obj_ecc_keypair_attrs), }; struct attr_ops { TEE_Result (*from_user)(void *attr, const void *buffer, size_t size); TEE_Result (*to_user)(void *attr, struct tee_ta_session *sess, void *buffer, uint64_t *size); TEE_Result (*to_binary)(void *attr, void *data, size_t data_len, size_t *offs); bool (*from_binary)(void *attr, const void *data, size_t data_len, size_t *offs); TEE_Result (*from_obj)(void *attr, void *src_attr); void (*free)(void *attr); void (*clear)(void *attr); }; static TEE_Result op_u32_to_binary_helper(uint32_t v, uint8_t *data, size_t data_len, size_t *offs) { uint32_t field; size_t next_offs; if (ADD_OVERFLOW(*offs, sizeof(field), &next_offs)) return TEE_ERROR_OVERFLOW; if (data && next_offs <= data_len) { field = TEE_U32_TO_BIG_ENDIAN(v); memcpy(data + *offs, &field, sizeof(field)); } (*offs) = next_offs; return TEE_SUCCESS; } static bool op_u32_from_binary_helper(uint32_t *v, const uint8_t *data, size_t data_len, size_t *offs) { uint32_t field; if (!data || (*offs + sizeof(field)) > data_len) return false; memcpy(&field, data + *offs, sizeof(field)); *v = TEE_U32_FROM_BIG_ENDIAN(field); (*offs) += sizeof(field); return true; } static TEE_Result op_attr_secret_value_from_user(void *attr, const void *buffer, size_t size) { struct tee_cryp_obj_secret *key = attr; /* Data size has to fit in allocated buffer */ if (size > key->alloc_size) return TEE_ERROR_SECURITY; memcpy(key + 1, buffer, size); key->key_size = size; return TEE_SUCCESS; } static TEE_Result op_attr_secret_value_to_user(void *attr, struct tee_ta_session *sess __unused, void *buffer, uint64_t *size) { TEE_Result res; struct tee_cryp_obj_secret *key = attr; uint64_t s; uint64_t key_size; res = tee_svc_copy_from_user(&s, size, sizeof(s)); if (res != TEE_SUCCESS) return res; key_size = key->key_size; res = tee_svc_copy_to_user(size, &key_size, sizeof(key_size)); if (res != TEE_SUCCESS) return res; if (s < key->key_size) return TEE_ERROR_SHORT_BUFFER; return tee_svc_copy_to_user(buffer, key + 1, key->key_size); } static TEE_Result op_attr_secret_value_to_binary(void *attr, void *data, size_t data_len, size_t *offs) { TEE_Result res; struct tee_cryp_obj_secret *key = attr; size_t next_offs; res = op_u32_to_binary_helper(key->key_size, data, data_len, offs); if (res != TEE_SUCCESS) return res; if (ADD_OVERFLOW(*offs, key->key_size, &next_offs)) return TEE_ERROR_OVERFLOW; if (data && next_offs <= data_len) memcpy((uint8_t *)data + *offs, key + 1, key->key_size); (*offs) = next_offs; return TEE_SUCCESS; } static bool op_attr_secret_value_from_binary(void *attr, const void *data, size_t data_len, size_t *offs) { struct tee_cryp_obj_secret *key = attr; uint32_t s; if (!op_u32_from_binary_helper(&s, data, data_len, offs)) return false; if ((*offs + s) > data_len) return false; /* Data size has to fit in allocated buffer */ if (s > key->alloc_size) return false; key->key_size = s; memcpy(key + 1, (const uint8_t *)data + *offs, s); (*offs) += s; return true; } static TEE_Result op_attr_secret_value_from_obj(void *attr, void *src_attr) { struct tee_cryp_obj_secret *key = attr; struct tee_cryp_obj_secret *src_key = src_attr; if (src_key->key_size > key->alloc_size) return TEE_ERROR_BAD_STATE; memcpy(key + 1, src_key + 1, src_key->key_size); key->key_size = src_key->key_size; return TEE_SUCCESS; } static void op_attr_secret_value_clear(void *attr) { struct tee_cryp_obj_secret *key = attr; key->key_size = 0; memset(key + 1, 0, key->alloc_size); } //static TEE_Result op_attr_bignum_from_user(void *attr, const void *buffer, // size_t size) //{ // struct bignum **bn = attr; // // return crypto_bignum_bin2bn(buffer, size, *bn); //} // //static TEE_Result op_attr_bignum_to_user(void *attr, // struct tee_ta_session *sess, // void *buffer, uint64_t *size) //{ // TEE_Result res; // struct bignum **bn = attr; // uint64_t req_size; // uint64_t s; // // res = tee_svc_copy_from_user(&s, size, sizeof(s)); // if (res != TEE_SUCCESS) // return res; // // req_size = crypto_bignum_num_bytes(*bn); // res = tee_svc_copy_to_user(size, &req_size, sizeof(req_size)); // if (res != TEE_SUCCESS) // return res; // if (!req_size) // return TEE_SUCCESS; // if (s < req_size) // return TEE_ERROR_SHORT_BUFFER; // // /* Check we can access data using supplied user mode pointer */ // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_WRITE | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)buffer, req_size); // if (res != TEE_SUCCESS) // return res; // /* // * Write the bignum (wich raw data points to) into an array of // * bytes (stored in buffer) // */ // crypto_bignum_bn2bin(*bn, buffer); // return TEE_SUCCESS; //} // //static TEE_Result op_attr_bignum_to_binary(void *attr, void *data, // size_t data_len, size_t *offs) //{ // TEE_Result res; // struct bignum **bn = attr; // uint32_t n = crypto_bignum_num_bytes(*bn); // size_t next_offs; // // res = op_u32_to_binary_helper(n, data, data_len, offs); // if (res != TEE_SUCCESS) // return res; // // if (ADD_OVERFLOW(*offs, n, &next_offs)) // return TEE_ERROR_OVERFLOW; // // if (data && next_offs <= data_len) // crypto_bignum_bn2bin(*bn, (uint8_t *)data + *offs); // (*offs) = next_offs; // // return TEE_SUCCESS; //} // //static bool op_attr_bignum_from_binary(void *attr, const void *data, // size_t data_len, size_t *offs) //{ // struct bignum **bn = attr; // uint32_t n; // // if (!op_u32_from_binary_helper(&n, data, data_len, offs)) // return false; // // if ((*offs + n) > data_len) // return false; // if (crypto_bignum_bin2bn((const uint8_t *)data + *offs, n, *bn)) // return false; // (*offs) += n; // return true; //} // //static TEE_Result op_attr_bignum_from_obj(void *attr, void *src_attr) //{ // struct bignum **bn = attr; // struct bignum **src_bn = src_attr; // // crypto_bignum_copy(*bn, *src_bn); // return TEE_SUCCESS; //} // //static void op_attr_bignum_clear(void *attr) //{ // struct bignum **bn = attr; // // crypto_bignum_clear(*bn); //} // //static void op_attr_bignum_free(void *attr) //{ // struct bignum **bn = attr; // // crypto_bignum_free(*bn); // *bn = NULL; //} // //static TEE_Result op_attr_value_from_user(void *attr, const void *buffer, // size_t size) //{ // uint32_t *v = attr; // // if (size != sizeof(uint32_t) * 2) // return TEE_ERROR_GENERIC; /* "can’t happen */ // // /* Note that only the first value is copied */ // memcpy(v, buffer, sizeof(uint32_t)); // return TEE_SUCCESS; //} // //static TEE_Result op_attr_value_to_user(void *attr, // struct tee_ta_session *sess __unused, // void *buffer, uint64_t *size) //{ // TEE_Result res; // uint32_t *v = attr; // uint64_t s; // uint32_t value[2] = { *v }; // uint64_t req_size = sizeof(value); // // res = tee_svc_copy_from_user(&s, size, sizeof(s)); // if (res != TEE_SUCCESS) // return res; // // if (s < req_size) // return TEE_ERROR_SHORT_BUFFER; // // return tee_svc_copy_to_user(buffer, value, req_size); //} // //static TEE_Result op_attr_value_to_binary(void *attr, void *data, // size_t data_len, size_t *offs) //{ // uint32_t *v = attr; // // return op_u32_to_binary_helper(*v, data, data_len, offs); //} // //static bool op_attr_value_from_binary(void *attr, const void *data, // size_t data_len, size_t *offs) //{ // uint32_t *v = attr; // // return op_u32_from_binary_helper(v, data, data_len, offs); //} // //static TEE_Result op_attr_value_from_obj(void *attr, void *src_attr) //{ // uint32_t *v = attr; // uint32_t *src_v = src_attr; // // *v = *src_v; // return TEE_SUCCESS; //} // //static void op_attr_value_clear(void *attr) //{ // uint32_t *v = attr; // // *v = 0; //} // static const struct attr_ops attr_ops[] = { [ATTR_OPS_INDEX_SECRET] = { .from_user = op_attr_secret_value_from_user, .to_user = op_attr_secret_value_to_user, .to_binary = op_attr_secret_value_to_binary, .from_binary = op_attr_secret_value_from_binary, .from_obj = op_attr_secret_value_from_obj, .free = op_attr_secret_value_clear, /* not a typo */ .clear = op_attr_secret_value_clear, }, // [ATTR_OPS_INDEX_BIGNUM] = { // .from_user = op_attr_bignum_from_user, // .to_user = op_attr_bignum_to_user, // .to_binary = op_attr_bignum_to_binary, // .from_binary = op_attr_bignum_from_binary, // .from_obj = op_attr_bignum_from_obj, // .free = op_attr_bignum_free, // .clear = op_attr_bignum_clear, // }, // [ATTR_OPS_INDEX_VALUE] = { // .from_user = op_attr_value_from_user, // .to_user = op_attr_value_to_user, // .to_binary = op_attr_value_to_binary, // .from_binary = op_attr_value_from_binary, // .from_obj = op_attr_value_from_obj, // .free = op_attr_value_clear, /* not a typo */ // .clear = op_attr_value_clear, // }, }; TEE_Result utee_cryp_obj_get_info(unsigned long obj, TEE_ObjectInfo *info) { TEE_Result res; struct tee_ta_session *sess; struct tee_obj *o; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) goto exit; res = tee_obj_get(to_user_ta_ctx(sess->ctx), tee_svc_uref_to_vaddr(obj), &o); if (res != TEE_SUCCESS) goto exit; res = tee_svc_copy_to_user(info, &o->info, sizeof(o->info)); exit: return res; } //TEE_Result syscall_cryp_obj_restrict_usage(unsigned long obj, // unsigned long usage) //{ // TEE_Result res; // struct tee_ta_session *sess; // struct tee_obj *o; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // goto exit; // // res = tee_obj_get(to_user_ta_ctx(sess->ctx), // tee_svc_uref_to_vaddr(obj), &o); // if (res != TEE_SUCCESS) // goto exit; // // o->info.objectUsage &= usage; // //exit: // return res; //} static int tee_svc_cryp_obj_find_type_attr_idx( uint32_t attr_id, const struct tee_cryp_obj_type_props *type_props) { size_t n; for (n = 0; n < type_props->num_type_attrs; n++) { if (attr_id == type_props->type_attrs[n].attr_id) return n; } return -1; } static const struct tee_cryp_obj_type_props *tee_svc_find_type_props( TEE_ObjectType obj_type) { size_t n; for (n = 0; n < ARRAY_SIZE(tee_cryp_obj_props); n++) { if (tee_cryp_obj_props[n].obj_type == obj_type) return tee_cryp_obj_props + n; } return NULL; } ///* Set an attribute on an object */ //static void set_attribute(struct tee_obj *o, // const struct tee_cryp_obj_type_props *props, // uint32_t attr) //{ // int idx = tee_svc_cryp_obj_find_type_attr_idx(attr, props); // // if (idx < 0) // return; // o->have_attrs |= BIT(idx); //} // ///* Get an attribute on an object */ //static uint32_t get_attribute(const struct tee_obj *o, // const struct tee_cryp_obj_type_props *props, // uint32_t attr) //{ // int idx = tee_svc_cryp_obj_find_type_attr_idx(attr, props); // // if (idx < 0) // return 0; // return o->have_attrs & BIT(idx); //} // //TEE_Result syscall_cryp_obj_get_attr(unsigned long obj, unsigned long attr_id, // void *buffer, uint64_t *size) //{ // TEE_Result res; // struct tee_ta_session *sess; // struct tee_obj *o; // const struct tee_cryp_obj_type_props *type_props; // int idx; // const struct attr_ops *ops; // void *attr; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // // res = tee_obj_get(to_user_ta_ctx(sess->ctx), // tee_svc_uref_to_vaddr(obj), &o); // if (res != TEE_SUCCESS) // return TEE_ERROR_ITEM_NOT_FOUND; // // /* Check that the object is initialized */ // if (!(o->info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED)) // return TEE_ERROR_BAD_PARAMETERS; // // /* Check that getting the attribute is allowed */ // if (!(attr_id & TEE_ATTR_BIT_PROTECTED) && // !(o->info.objectUsage & TEE_USAGE_EXTRACTABLE)) // return TEE_ERROR_BAD_PARAMETERS; // // type_props = tee_svc_find_type_props(o->info.objectType); // if (!type_props) { // /* Unknown object type, “can’t happen” */ // return TEE_ERROR_BAD_STATE; // } // // idx = tee_svc_cryp_obj_find_type_attr_idx(attr_id, type_props); // if ((idx < 0) || ((o->have_attrs & (1 << idx)) == 0)) // return TEE_ERROR_ITEM_NOT_FOUND; // // ops = attr_ops + type_props->type_attrs[idx].ops_index; // attr = (uint8_t *)o->attr + type_props->type_attrs[idx].raw_offs; // return ops->to_user(attr, sess, buffer, size); //} // void tee_obj_attr_free(struct tee_obj *o) { // DMSG(“******** FREE *********”); const struct tee_cryp_obj_type_props *tp; size_t n; if (!o->attr) return; tp = tee_svc_find_type_props(o->info.objectType); if (!tp) return; for (n = 0; n < tp->num_type_attrs; n++) { const struct tee_cryp_obj_type_attrs *ta = tp->type_attrs + n; attr_ops[ta->ops_index].free((uint8_t *)o->attr + ta->raw_offs); } } void tee_obj_attr_clear(struct tee_obj *o) { const struct tee_cryp_obj_type_props *tp; size_t n; if (!o->attr) return; tp = tee_svc_find_type_props(o->info.objectType); if (!tp) return; for (n = 0; n < tp->num_type_attrs; n++) { const struct tee_cryp_obj_type_attrs *ta = tp->type_attrs + n; attr_ops[ta->ops_index].clear((uint8_t *)o->attr + ta->raw_offs); } } //TEE_Result tee_obj_attr_to_binary(struct tee_obj *o, void *data, // size_t *data_len) //{ // const struct tee_cryp_obj_type_props *tp; // size_t n; // size_t offs = 0; // size_t len = data ? *data_len : 0; // TEE_Result res; // // if (o->info.objectType == TEE_TYPE_DATA) { // *data_len = 0; // return TEE_SUCCESS; /* pure data object */ // } // if (!o->attr) // return TEE_ERROR_BAD_STATE; // tp = tee_svc_find_type_props(o->info.objectType); // if (!tp) // return TEE_ERROR_BAD_STATE; // // for (n = 0; n < tp->num_type_attrs; n++) { // const struct tee_cryp_obj_type_attrs *ta = tp->type_attrs + n; // void *attr = (uint8_t *)o->attr + ta->raw_offs; // // res = attr_ops[ta->ops_index].to_binary(attr, data, len, &offs); // if (res != TEE_SUCCESS) // return res; // } // // *data_len = offs; // if (data && offs > len) // return TEE_ERROR_SHORT_BUFFER; // return TEE_SUCCESS; //} // //TEE_Result tee_obj_attr_from_binary(struct tee_obj *o, const void *data, // size_t data_len) //{ // const struct tee_cryp_obj_type_props *tp; // size_t n; // size_t offs = 0; // // if (o->info.objectType == TEE_TYPE_DATA) // return TEE_SUCCESS; /* pure data object */ // if (!o->attr) // return TEE_ERROR_BAD_STATE; // tp = tee_svc_find_type_props(o->info.objectType); // if (!tp) // return TEE_ERROR_BAD_STATE; // // for (n = 0; n < tp->num_type_attrs; n++) { // const struct tee_cryp_obj_type_attrs *ta = tp->type_attrs + n; // void *attr = (uint8_t *)o->attr + ta->raw_offs; // // if (!attr_ops[ta->ops_index].from_binary(attr, data, data_len, // &offs)) // return TEE_ERROR_CORRUPT_OBJECT; // } // return TEE_SUCCESS; //} // TEE_Result tee_obj_attr_copy_from(struct tee_obj *o, const struct tee_obj *src) { TEE_Result res; const struct tee_cryp_obj_type_props *tp; const struct tee_cryp_obj_type_attrs *ta; size_t n; uint32_t have_attrs = 0; void *attr; void *src_attr; if (o->info.objectType == TEE_TYPE_DATA) return TEE_SUCCESS; /* pure data object */ if (!o->attr) return TEE_ERROR_BAD_STATE; tp = tee_svc_find_type_props(o->info.objectType); if (!tp) return TEE_ERROR_BAD_STATE; if (o->info.objectType == src->info.objectType) { have_attrs = src->have_attrs; for (n = 0; n < tp->num_type_attrs; n++) { ta = tp->type_attrs + n; attr = (uint8_t *)o->attr + ta->raw_offs; src_attr = (uint8_t *)src->attr + ta->raw_offs; res = attr_ops[ta->ops_index].from_obj(attr, src_attr); if (res != TEE_SUCCESS) return res; } } else { const struct tee_cryp_obj_type_props *tp_src; int idx; if (o->info.objectType == TEE_TYPE_RSA_PUBLIC_KEY) { if (src->info.objectType != TEE_TYPE_RSA_KEYPAIR) return TEE_ERROR_BAD_PARAMETERS; } else if (o->info.objectType == TEE_TYPE_DSA_PUBLIC_KEY) { if (src->info.objectType != TEE_TYPE_DSA_KEYPAIR) return TEE_ERROR_BAD_PARAMETERS; } else if (o->info.objectType == TEE_TYPE_ECDSA_PUBLIC_KEY) { if (src->info.objectType != TEE_TYPE_ECDSA_KEYPAIR) return TEE_ERROR_BAD_PARAMETERS; } else if (o->info.objectType == TEE_TYPE_ECDH_PUBLIC_KEY) { if (src->info.objectType != TEE_TYPE_ECDH_KEYPAIR) return TEE_ERROR_BAD_PARAMETERS; } else { return TEE_ERROR_BAD_PARAMETERS; } tp_src = tee_svc_find_type_props(src->info.objectType); if (!tp_src) return TEE_ERROR_BAD_STATE; have_attrs = BIT32(tp->num_type_attrs) - 1; for (n = 0; n < tp->num_type_attrs; n++) { ta = tp->type_attrs + n; idx = tee_svc_cryp_obj_find_type_attr_idx(ta->attr_id, tp_src); if (idx < 0) return TEE_ERROR_BAD_STATE; attr = (uint8_t *)o->attr + ta->raw_offs; src_attr = (uint8_t *)src->attr + tp_src->type_attrs[idx].raw_offs; res = attr_ops[ta->ops_index].from_obj(attr, src_attr); if (res != TEE_SUCCESS) return res; } } o->have_attrs = have_attrs; return TEE_SUCCESS; } TEE_Result tee_obj_set_type(struct tee_obj *o, uint32_t obj_type, size_t max_key_size) { TEE_Result res = TEE_SUCCESS; const struct tee_cryp_obj_type_props *type_props; /* Can only set type for newly allocated objs */ if (o->attr) return TEE_ERROR_BAD_STATE; /* * Verify that maxKeySize is supported and find out how * much should be allocated. */ if (obj_type == TEE_TYPE_DATA) { if (max_key_size) return TEE_ERROR_NOT_SUPPORTED; } else { /* Find description of object */ type_props = tee_svc_find_type_props(obj_type); if (!type_props) return TEE_ERROR_NOT_SUPPORTED; /* Check that maxKeySize follows restrictions */ if (max_key_size % type_props->quanta != 0) return TEE_ERROR_NOT_SUPPORTED; if (max_key_size < type_props->min_size) return TEE_ERROR_NOT_SUPPORTED; if (max_key_size > type_props->max_size) return TEE_ERROR_NOT_SUPPORTED; o->attr = calloc(1, type_props->alloc_size); if (!o->attr) return TEE_ERROR_OUT_OF_MEMORY; } /* If we have a key structure, pre-allocate the bignums inside */ switch (obj_type) { // case TEE_TYPE_RSA_PUBLIC_KEY: // res = crypto_acipher_alloc_rsa_public_key(o->attr, // max_key_size); // break; // case TEE_TYPE_RSA_KEYPAIR: // res = crypto_acipher_alloc_rsa_keypair(o->attr, max_key_size); // break; // case TEE_TYPE_DSA_PUBLIC_KEY: // res = crypto_acipher_alloc_dsa_public_key(o->attr, // max_key_size); // break; // case TEE_TYPE_DSA_KEYPAIR: // res = crypto_acipher_alloc_dsa_keypair(o->attr, max_key_size); // break; // case TEE_TYPE_DH_KEYPAIR: // res = crypto_acipher_alloc_dh_keypair(o->attr, max_key_size); // break; // case TEE_TYPE_ECDSA_PUBLIC_KEY: // case TEE_TYPE_ECDH_PUBLIC_KEY: // res = crypto_acipher_alloc_ecc_public_key(o->attr, // max_key_size); // break; // case TEE_TYPE_ECDSA_KEYPAIR: // case TEE_TYPE_ECDH_KEYPAIR: // res = crypto_acipher_alloc_ecc_keypair(o->attr, max_key_size); // break; default: if (obj_type != TEE_TYPE_DATA) { struct tee_cryp_obj_secret *key = o->attr; key->alloc_size = type_props->alloc_size - sizeof(*key); } break; } if (res != TEE_SUCCESS) return res; o->info.objectType = obj_type; o->info.maxKeySize = max_key_size; o->info.objectUsage = TEE_USAGE_DEFAULT; return TEE_SUCCESS; } TEE_Result utee_cryp_obj_alloc(unsigned long obj_type, unsigned long max_key_size, uint32_t *obj) { TEE_Result res; struct tee_ta_session *sess; struct tee_obj *o; if (obj_type == TEE_TYPE_DATA) return TEE_ERROR_NOT_SUPPORTED; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; o = tee_obj_alloc(); if (!o) return TEE_ERROR_OUT_OF_MEMORY; res = tee_obj_set_type(o, obj_type, max_key_size); if (res != TEE_SUCCESS) { tee_obj_free(o); return res; } tee_obj_add(to_user_ta_ctx(sess->ctx), o); res = tee_svc_copy_kaddr_to_uref(obj, o); if (res != TEE_SUCCESS) tee_obj_close(to_user_ta_ctx(sess->ctx), o); return res; } TEE_Result utee_cryp_obj_close(unsigned long obj) { TEE_Result res; struct tee_ta_session *sess; struct tee_obj *o; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; res = tee_obj_get(to_user_ta_ctx(sess->ctx), tee_svc_uref_to_vaddr(obj), &o); if (res != TEE_SUCCESS) return res; /* * If it’s busy it’s used by an operation, a client should never have * this handle. */ if (o->busy) return TEE_ERROR_ITEM_NOT_FOUND; tee_obj_close(to_user_ta_ctx(sess->ctx), o); return TEE_SUCCESS; } TEE_Result utee_cryp_obj_reset(unsigned long obj) { TEE_Result res; struct tee_ta_session *sess; struct tee_obj *o; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; res = tee_obj_get(to_user_ta_ctx(sess->ctx), tee_svc_uref_to_vaddr(obj), &o); if (res != TEE_SUCCESS) return res; if ((o->info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT) == 0) { tee_obj_attr_clear(o); o->info.keySize = 0; o->info.objectUsage = TEE_USAGE_DEFAULT; } else { return TEE_ERROR_BAD_PARAMETERS; } /* the object is no more initialized */ o->info.handleFlags &= ~TEE_HANDLE_FLAG_INITIALIZED; return TEE_SUCCESS; } static TEE_Result copy_in_attrs(struct user_ta_ctx *utc, const struct utee_attribute *usr_attrs, uint32_t attr_count, TEE_Attribute *attrs) { // TEE_Result res; uint32_t n; (void) utc; // res = tee_mmu_check_access_rights(utc, // TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)usr_attrs, // attr_count * sizeof(struct utee_attribute)); // if (res != TEE_SUCCESS) // return res; for (n = 0; n < attr_count; n++) { attrs[n].attributeID = usr_attrs[n].attribute_id; if (attrs[n].attributeID & TEE_ATTR_BIT_VALUE) { attrs[n].content.value.a = usr_attrs[n].a; attrs[n].content.value.b = usr_attrs[n].b; } else { uintptr_t buf = usr_attrs[n].a; size_t len = usr_attrs[n].b; // res = tee_mmu_check_access_rights(utc, // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, buf, len); // if (res != TEE_SUCCESS) // return res; attrs[n].content.ref.buffer = (void *)buf; attrs[n].content.ref.length = len; } } return TEE_SUCCESS; } enum attr_usage { ATTR_USAGE_POPULATE, ATTR_USAGE_GENERATE_KEY }; static TEE_Result tee_svc_cryp_check_attr(enum attr_usage usage, const struct tee_cryp_obj_type_props *type_props, const TEE_Attribute *attrs, uint32_t attr_count) { uint32_t required_flag; uint32_t opt_flag; bool all_opt_needed; uint32_t req_attrs = 0; uint32_t opt_grp_attrs = 0; uint32_t attrs_found = 0; size_t n; uint32_t bit; uint32_t flags; int idx; if (usage == ATTR_USAGE_POPULATE) { required_flag = TEE_TYPE_ATTR_REQUIRED; opt_flag = TEE_TYPE_ATTR_OPTIONAL_GROUP; all_opt_needed = true; } else { required_flag = TEE_TYPE_ATTR_GEN_KEY_REQ; opt_flag = TEE_TYPE_ATTR_GEN_KEY_OPT; all_opt_needed = false; } /* * First find out which attributes are required and which belong to * the optional group */ for (n = 0; n < type_props->num_type_attrs; n++) { bit = 1 << n; flags = type_props->type_attrs[n].flags; if (flags & required_flag) req_attrs |= bit; else if (flags & opt_flag) opt_grp_attrs |= bit; } /* * Verify that all required attributes are in place and * that the same attribute isn’t repeated. */ for (n = 0; n < attr_count; n++) { idx = tee_svc_cryp_obj_find_type_attr_idx( attrs[n].attributeID, type_props); /* attribute not defined in current object type */ if (idx < 0) return TEE_ERROR_ITEM_NOT_FOUND; bit = 1 << idx; /* attribute not repeated */ if ((attrs_found & bit) != 0) return TEE_ERROR_ITEM_NOT_FOUND; attrs_found |= bit; } /* Required attribute missing */ if ((attrs_found & req_attrs) != req_attrs) return TEE_ERROR_ITEM_NOT_FOUND; /* * If the flag says that “if one of the optional attributes are included * all of them has to be included” this must be checked. */ if (all_opt_needed && (attrs_found & opt_grp_attrs) != 0 && (attrs_found & opt_grp_attrs) != opt_grp_attrs) return TEE_ERROR_ITEM_NOT_FOUND; return TEE_SUCCESS; } static TEE_Result tee_svc_cryp_obj_populate_type( struct tee_obj *o, const struct tee_cryp_obj_type_props *type_props, const TEE_Attribute *attrs, uint32_t attr_count) { TEE_Result res; uint32_t have_attrs = 0; size_t obj_size = 0; size_t n; int idx; const struct attr_ops *ops; void *attr; for (n = 0; n < attr_count; n++) { idx = tee_svc_cryp_obj_find_type_attr_idx( attrs[n].attributeID, type_props); /* attribute not defined in current object type */ if (idx < 0) return TEE_ERROR_ITEM_NOT_FOUND; have_attrs |= BIT32(idx); ops = attr_ops + type_props->type_attrs[idx].ops_index; attr = (uint8_t *)o->attr + type_props->type_attrs[idx].raw_offs; if (attrs[n].attributeID & TEE_ATTR_BIT_VALUE) res = ops->from_user(attr, &attrs[n].content.value, sizeof(attrs[n].content.value)); else res = ops->from_user(attr, attrs[n].content.ref.buffer, attrs[n].content.ref.length); if (res != TEE_SUCCESS) return res; /* * First attr_idx signifies the attribute that gives the size * of the object */ if (type_props->type_attrs[idx].flags & TEE_TYPE_ATTR_SIZE_INDICATOR) obj_size += attrs[n].content.ref.length * 8; } /* * We have to do it like this because the parity bits aren’t counted * when telling the size of the key in bits. */ if (o->info.objectType == TEE_TYPE_DES || o->info.objectType == TEE_TYPE_DES3) obj_size -= obj_size / 8; /* Exclude parity in size of key */ o->have_attrs = have_attrs; o->info.keySize = obj_size; return TEE_SUCCESS; } TEE_Result utee_cryp_obj_populate(unsigned long obj, struct utee_attribute *usr_attrs, unsigned long attr_count) { TEE_Result res; struct tee_ta_session *sess; struct tee_obj *o; const struct tee_cryp_obj_type_props *type_props; TEE_Attribute *attrs = NULL; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; res = tee_obj_get(to_user_ta_ctx(sess->ctx), tee_svc_uref_to_vaddr(obj), &o); if (res != TEE_SUCCESS) return res; /* Must be a transient object */ if ((o->info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT) != 0) return TEE_ERROR_BAD_PARAMETERS; /* Must not be initialized already */ if ((o->info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) != 0) return TEE_ERROR_BAD_PARAMETERS; type_props = tee_svc_find_type_props(o->info.objectType); if (!type_props) return TEE_ERROR_NOT_IMPLEMENTED; size_t alloc_size = 0; if (MUL_OVERFLOW(sizeof(TEE_Attribute), attr_count, &alloc_size)) return TEE_ERROR_OVERFLOW; attrs = malloc(alloc_size); if (!attrs) return TEE_ERROR_OUT_OF_MEMORY; res = copy_in_attrs(to_user_ta_ctx(sess->ctx), usr_attrs, attr_count, attrs); if (res != TEE_SUCCESS) goto out; res = tee_svc_cryp_check_attr(ATTR_USAGE_POPULATE, type_props, attrs, attr_count); if (res != TEE_SUCCESS) goto out; res = tee_svc_cryp_obj_populate_type(o, type_props, attrs, attr_count); if (res == TEE_SUCCESS) o->info.handleFlags |= TEE_HANDLE_FLAG_INITIALIZED; out: free(attrs); return res; } TEE_Result utee_cryp_obj_copy(unsigned long dst, unsigned long src) { TEE_Result res; struct tee_ta_session *sess; struct tee_obj *dst_o; struct tee_obj *src_o; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; res = tee_obj_get(to_user_ta_ctx(sess->ctx), tee_svc_uref_to_vaddr(dst), &dst_o); if (res != TEE_SUCCESS) return res; res = tee_obj_get(to_user_ta_ctx(sess->ctx), tee_svc_uref_to_vaddr(src), &src_o); if (res != TEE_SUCCESS) return res; if ((src_o->info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) == 0) return TEE_ERROR_BAD_PARAMETERS; if ((dst_o->info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT) != 0) return TEE_ERROR_BAD_PARAMETERS; if ((dst_o->info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) != 0) return TEE_ERROR_BAD_PARAMETERS; res = tee_obj_attr_copy_from(dst_o, src_o); if (res != TEE_SUCCESS) return res; dst_o->info.handleFlags |= TEE_HANDLE_FLAG_INITIALIZED; dst_o->info.keySize = src_o->info.keySize; dst_o->info.objectUsage = src_o->info.objectUsage; return TEE_SUCCESS; } //static TEE_Result tee_svc_obj_generate_key_rsa( // struct tee_obj *o, const struct tee_cryp_obj_type_props *type_props, // uint32_t key_size, // const TEE_Attribute *params, uint32_t param_count) //{ // TEE_Result res; // struct rsa_keypair *key = o->attr; // uint32_t e = TEE_U32_TO_BIG_ENDIAN(65537); // // /* Copy the present attributes into the obj before starting */ // res = tee_svc_cryp_obj_populate_type(o, type_props, params, // param_count); // if (res != TEE_SUCCESS) // return res; // if (!get_attribute(o, type_props, TEE_ATTR_RSA_PUBLIC_EXPONENT)) // crypto_bignum_bin2bn((const uint8_t *)&e, sizeof(e), key->e); // res = crypto_acipher_gen_rsa_key(key, key_size); // if (res != TEE_SUCCESS) // return res; // // /* Set bits for all known attributes for this object type */ // o->have_attrs = (1 << type_props->num_type_attrs) - 1; // // return TEE_SUCCESS; //} // //static TEE_Result tee_svc_obj_generate_key_dsa( // struct tee_obj *o, const struct tee_cryp_obj_type_props *type_props, // uint32_t key_size) //{ // TEE_Result res; // // res = crypto_acipher_gen_dsa_key(o->attr, key_size); // if (res != TEE_SUCCESS) // return res; // // /* Set bits for all known attributes for this object type */ // o->have_attrs = (1 << type_props->num_type_attrs) - 1; // // return TEE_SUCCESS; //} // //static TEE_Result tee_svc_obj_generate_key_dh( // struct tee_obj *o, const struct tee_cryp_obj_type_props *type_props, // uint32_t key_size __unused, // const TEE_Attribute *params, uint32_t param_count) //{ // TEE_Result res; // struct dh_keypair *tee_dh_key; // struct bignum *dh_q = NULL; // uint32_t dh_xbits = 0; // // /* Copy the present attributes into the obj before starting */ // res = tee_svc_cryp_obj_populate_type(o, type_props, params, // param_count); // if (res != TEE_SUCCESS) // return res; // // tee_dh_key = (struct dh_keypair *)o->attr; // // if (get_attribute(o, type_props, TEE_ATTR_DH_SUBPRIME)) // dh_q = tee_dh_key->q; // if (get_attribute(o, type_props, TEE_ATTR_DH_X_BITS)) // dh_xbits = tee_dh_key->xbits; // res = crypto_acipher_gen_dh_key(tee_dh_key, dh_q, dh_xbits); // if (res != TEE_SUCCESS) // return res; // // /* Set bits for the generated public and private key */ // set_attribute(o, type_props, TEE_ATTR_DH_PUBLIC_VALUE); // set_attribute(o, type_props, TEE_ATTR_DH_PRIVATE_VALUE); // set_attribute(o, type_props, TEE_ATTR_DH_X_BITS); // return TEE_SUCCESS; //} // //static TEE_Result tee_svc_obj_generate_key_ecc( // struct tee_obj *o, const struct tee_cryp_obj_type_props *type_props, // uint32_t key_size __unused, // const TEE_Attribute *params, uint32_t param_count) //{ // TEE_Result res; // struct ecc_keypair *tee_ecc_key; // // /* Copy the present attributes into the obj before starting */ // res = tee_svc_cryp_obj_populate_type(o, type_props, params, // param_count); // if (res != TEE_SUCCESS) // return res; // // tee_ecc_key = (struct ecc_keypair *)o->attr; // // res = crypto_acipher_gen_ecc_key(tee_ecc_key); // if (res != TEE_SUCCESS) // return res; // // /* Set bits for the generated public and private key */ // set_attribute(o, type_props, TEE_ATTR_ECC_PRIVATE_VALUE); // set_attribute(o, type_props, TEE_ATTR_ECC_PUBLIC_VALUE_X); // set_attribute(o, type_props, TEE_ATTR_ECC_PUBLIC_VALUE_Y); // set_attribute(o, type_props, TEE_ATTR_ECC_CURVE); // return TEE_SUCCESS; //} // //TEE_Result syscall_obj_generate_key(unsigned long obj, unsigned long key_size, // const struct utee_attribute *usr_params, // unsigned long param_count) //{ // TEE_Result res; // struct tee_ta_session *sess; // const struct tee_cryp_obj_type_props *type_props; // struct tee_obj *o; // struct tee_cryp_obj_secret *key; // size_t byte_size; // TEE_Attribute *params = NULL; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // // res = tee_obj_get(to_user_ta_ctx(sess->ctx), // tee_svc_uref_to_vaddr(obj), &o); // if (res != TEE_SUCCESS) // return res; // // /* Must be a transient object */ // if ((o->info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT) != 0) // return TEE_ERROR_BAD_STATE; // // /* Must not be initialized already */ // if ((o->info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) != 0) // return TEE_ERROR_BAD_STATE; // // /* Find description of object */ // type_props = tee_svc_find_type_props(o->info.objectType); // if (!type_props) // return TEE_ERROR_NOT_SUPPORTED; // // /* Check that maxKeySize follows restrictions */ // if (key_size % type_props->quanta != 0) // return TEE_ERROR_NOT_SUPPORTED; // if (key_size < type_props->min_size) // return TEE_ERROR_NOT_SUPPORTED; // if (key_size > type_props->max_size) // return TEE_ERROR_NOT_SUPPORTED; // // params = malloc(sizeof(TEE_Attribute) * param_count); // if (!params) // return TEE_ERROR_OUT_OF_MEMORY; // res = copy_in_attrs(to_user_ta_ctx(sess->ctx), usr_params, param_count, // params); // if (res != TEE_SUCCESS) // goto out; // // res = tee_svc_cryp_check_attr(ATTR_USAGE_GENERATE_KEY, type_props, // params, param_count); // if (res != TEE_SUCCESS) // goto out; // // switch (o->info.objectType) { // case TEE_TYPE_AES: // case TEE_TYPE_DES: // case TEE_TYPE_DES3: // case TEE_TYPE_HMAC_MD5: // case TEE_TYPE_HMAC_SHA1: // case TEE_TYPE_HMAC_SHA224: // case TEE_TYPE_HMAC_SHA256: // case TEE_TYPE_HMAC_SHA384: // case TEE_TYPE_HMAC_SHA512: // case TEE_TYPE_GENERIC_SECRET: // byte_size = key_size / 8; // // /* // * We have to do it like this because the parity bits aren’t // * counted when telling the size of the key in bits. // */ // if (o->info.objectType == TEE_TYPE_DES || // o->info.objectType == TEE_TYPE_DES3) { // byte_size = (key_size + key_size / 7) / 8; // } // // key = (struct tee_cryp_obj_secret *)o->attr; // if (byte_size > key->alloc_size) { // res = TEE_ERROR_EXCESS_DATA; // goto out; // } // // res = crypto_rng_read((void *)(key + 1), byte_size); // if (res != TEE_SUCCESS) // goto out; // // key->key_size = byte_size; // // /* Set bits for all known attributes for this object type */ // o->have_attrs = (1 << type_props->num_type_attrs) - 1; // // break; // // case TEE_TYPE_RSA_KEYPAIR: // res = tee_svc_obj_generate_key_rsa(o, type_props, key_size, // params, param_count); // if (res != TEE_SUCCESS) // goto out; // break; // // case TEE_TYPE_DSA_KEYPAIR: // res = tee_svc_obj_generate_key_dsa(o, type_props, key_size); // if (res != TEE_SUCCESS) // goto out; // break; // // case TEE_TYPE_DH_KEYPAIR: // res = tee_svc_obj_generate_key_dh(o, type_props, key_size, // params, param_count); // if (res != TEE_SUCCESS) // goto out; // break; // // case TEE_TYPE_ECDSA_KEYPAIR: // case TEE_TYPE_ECDH_KEYPAIR: // res = tee_svc_obj_generate_key_ecc(o, type_props, key_size, // params, param_count); // if (res != TEE_SUCCESS) // goto out; // break; // // default: // res = TEE_ERROR_BAD_FORMAT; // } // //out: // free(params); // if (res == TEE_SUCCESS) { // o->info.keySize = key_size; // o->info.handleFlags |= TEE_HANDLE_FLAG_INITIALIZED; // } // return res; //} static TEE_Result tee_svc_cryp_get_state(struct tee_ta_session *sess, uint32_t state_id, struct tee_cryp_state **state) { struct tee_cryp_state *s; struct user_ta_ctx *utc = to_user_ta_ctx(sess->ctx); TAILQ_FOREACH(s, &utc->cryp_states, link) { if (state_id == (vaddr_t)s) { *state = s; return TEE_SUCCESS; } } return TEE_ERROR_BAD_PARAMETERS; } static void cryp_state_free(struct user_ta_ctx *utc, struct tee_cryp_state *cs) { struct tee_obj *o; if (tee_obj_get(utc, cs->key1, &o) == TEE_SUCCESS) tee_obj_close(utc, o); if (tee_obj_get(utc, cs->key2, &o) == TEE_SUCCESS) tee_obj_close(utc, o); TAILQ_REMOVE(&utc->cryp_states, cs, link); if (cs->ctx_finalize != NULL) cs->ctx_finalize(cs->ctx, cs->algo); switch (TEE_ALG_GET_CLASS(cs->algo)) { case TEE_OPERATION_CIPHER: crypto_cipher_free_ctx(cs->ctx, cs->algo); break; // case TEE_OPERATION_AE: // crypto_authenc_free_ctx(cs->ctx, cs->algo); // break; case TEE_OPERATION_DIGEST: crypto_hash_free_ctx(cs->ctx, cs->algo); break; case TEE_OPERATION_MAC: crypto_mac_free_ctx(cs->ctx, cs->algo); break; default: assert(!cs->ctx); } free(cs); } static TEE_Result tee_svc_cryp_check_key_type(const struct tee_obj *o, uint32_t algo, TEE_OperationMode mode) { uint32_t req_key_type; uint32_t req_key_type2 = 0; (void)mode; switch (TEE_ALG_GET_MAIN_ALG(algo)) { case TEE_MAIN_ALGO_MD5: req_key_type = TEE_TYPE_HMAC_MD5; break; case TEE_MAIN_ALGO_SHA1: req_key_type = TEE_TYPE_HMAC_SHA1; break; case TEE_MAIN_ALGO_SHA224: req_key_type = TEE_TYPE_HMAC_SHA224; break; case TEE_MAIN_ALGO_SHA256: req_key_type = TEE_TYPE_HMAC_SHA256; break; case TEE_MAIN_ALGO_SHA384: req_key_type = TEE_TYPE_HMAC_SHA384; break; case TEE_MAIN_ALGO_SHA512: req_key_type = TEE_TYPE_HMAC_SHA512; break; case TEE_MAIN_ALGO_AES: req_key_type = TEE_TYPE_AES; break; case TEE_MAIN_ALGO_DES: req_key_type = TEE_TYPE_DES; break; case TEE_MAIN_ALGO_DES3: req_key_type = TEE_TYPE_DES3; break; // case TEE_MAIN_ALGO_RSA: // req_key_type = TEE_TYPE_RSA_KEYPAIR; // if (mode == TEE_MODE_ENCRYPT || mode == TEE_MODE_VERIFY) // req_key_type2 = TEE_TYPE_RSA_PUBLIC_KEY; // break; // case TEE_MAIN_ALGO_DSA: // req_key_type = TEE_TYPE_DSA_KEYPAIR; // if (mode == TEE_MODE_ENCRYPT || mode == TEE_MODE_VERIFY) // req_key_type2 = TEE_TYPE_DSA_PUBLIC_KEY; // break; // case TEE_MAIN_ALGO_DH: // req_key_type = TEE_TYPE_DH_KEYPAIR; // break; // case TEE_MAIN_ALGO_ECDSA: // req_key_type = TEE_TYPE_ECDSA_KEYPAIR; // if (mode == TEE_MODE_VERIFY) // req_key_type2 = TEE_TYPE_ECDSA_PUBLIC_KEY; // break; // case TEE_MAIN_ALGO_ECDH: // req_key_type = TEE_TYPE_ECDH_KEYPAIR; // break; //#if defined(CFG_CRYPTO_HKDF) // case TEE_MAIN_ALGO_HKDF: // req_key_type = TEE_TYPE_HKDF_IKM; // break; //#endif //#if defined(CFG_CRYPTO_CONCAT_KDF) // case TEE_MAIN_ALGO_CONCAT_KDF: // req_key_type = TEE_TYPE_CONCAT_KDF_Z; // break; //#endif //#if defined(CFG_CRYPTO_PBKDF2) // case TEE_MAIN_ALGO_PBKDF2: // req_key_type = TEE_TYPE_PBKDF2_PASSWORD; // break; //#endif default: return TEE_ERROR_BAD_PARAMETERS; } if (req_key_type != o->info.objectType && req_key_type2 != o->info.objectType) return TEE_ERROR_BAD_PARAMETERS; return TEE_SUCCESS; } TEE_Result utee_cryp_state_alloc(unsigned long algo, unsigned long mode, unsigned long key1, unsigned long key2, uint32_t *state) { TEE_Result res; struct tee_cryp_state *cs; struct tee_ta_session *sess; struct tee_obj *o1 = NULL; struct tee_obj *o2 = NULL; struct user_ta_ctx *utc; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; utc = to_user_ta_ctx(sess->ctx); if (key1 != 0) { res = tee_obj_get(utc, tee_svc_uref_to_vaddr(key1), &o1); if (res != TEE_SUCCESS) return res; if (o1->busy) return TEE_ERROR_BAD_PARAMETERS; res = tee_svc_cryp_check_key_type(o1, algo, mode); if (res != TEE_SUCCESS) return res; } if (key2 != 0) { res = tee_obj_get(utc, tee_svc_uref_to_vaddr(key2), &o2); if (res != TEE_SUCCESS) return res; if (o2->busy) return TEE_ERROR_BAD_PARAMETERS; res = tee_svc_cryp_check_key_type(o2, algo, mode); if (res != TEE_SUCCESS) return res; } cs = calloc(1, sizeof(struct tee_cryp_state)); if (!cs) return TEE_ERROR_OUT_OF_MEMORY; TAILQ_INSERT_TAIL(&utc->cryp_states, cs, link); cs->algo = algo; cs->mode = mode; switch (TEE_ALG_GET_CLASS(algo)) { case TEE_OPERATION_CIPHER: if ((algo == TEE_ALG_AES_XTS && (key1 == 0 || key2 == 0)) || (algo != TEE_ALG_AES_XTS && (key1 == 0 || key2 != 0))) { res = TEE_ERROR_BAD_PARAMETERS; } else { res = crypto_cipher_alloc_ctx(&cs->ctx, algo); if (res != TEE_SUCCESS) break; } break; case TEE_OPERATION_AE: if (key1 == 0 || key2 != 0) { res = TEE_ERROR_BAD_PARAMETERS; } else { // res = crypto_authenc_alloc_ctx(&cs->ctx, algo); // if (res != TEE_SUCCESS) // break; } break; case TEE_OPERATION_MAC: if (key1 == 0 || key2 != 0) { res = TEE_ERROR_BAD_PARAMETERS; } else { res = crypto_mac_alloc_ctx(&cs->ctx, algo); if (res != TEE_SUCCESS) break; } break; case TEE_OPERATION_DIGEST: if (key1 != 0 || key2 != 0) { res = TEE_ERROR_BAD_PARAMETERS; } else { res = crypto_hash_alloc_ctx(&cs->ctx, algo); if (res != TEE_SUCCESS) break; } break; case TEE_OPERATION_ASYMMETRIC_CIPHER: case TEE_OPERATION_ASYMMETRIC_SIGNATURE: if (key1 == 0 || key2 != 0) res = TEE_ERROR_BAD_PARAMETERS; break; case TEE_OPERATION_KEY_DERIVATION: if (key1 == 0 || key2 != 0) res = TEE_ERROR_BAD_PARAMETERS; break; default: res = TEE_ERROR_NOT_SUPPORTED; break; } if (res != TEE_SUCCESS) goto out; res = tee_svc_copy_kaddr_to_uref(state, cs); if (res != TEE_SUCCESS) goto out; /* Register keys */ if (o1 != NULL) { o1->busy = true; cs->key1 = (vaddr_t)o1; } if (o2 != NULL) { o2->busy = true; cs->key2 = (vaddr_t)o2; } out: if (res != TEE_SUCCESS) cryp_state_free(utc, cs); return res; } //TEE_Result syscall_cryp_state_copy(unsigned long dst, unsigned long src) //{ // TEE_Result res; // struct tee_cryp_state *cs_dst; // struct tee_cryp_state *cs_src; // struct tee_ta_session *sess; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // // res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(dst), &cs_dst); // if (res != TEE_SUCCESS) // return res; // // res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(src), &cs_src); // if (res != TEE_SUCCESS) // return res; // if (cs_dst->algo != cs_src->algo || cs_dst->mode != cs_src->mode) // return TEE_ERROR_BAD_PARAMETERS; // // switch (TEE_ALG_GET_CLASS(cs_src->algo)) { // case TEE_OPERATION_CIPHER: // crypto_cipher_copy_state(cs_dst->ctx, cs_src->ctx, // cs_src->algo); // break; // case TEE_OPERATION_AE: // crypto_authenc_copy_state(cs_dst->ctx, cs_src->ctx, // cs_src->algo); // break; // case TEE_OPERATION_DIGEST: // crypto_hash_copy_state(cs_dst->ctx, cs_src->ctx, cs_src->algo); // break; // case TEE_OPERATION_MAC: // crypto_mac_copy_state(cs_dst->ctx, cs_src->ctx, cs_src->algo); // break; // default: // return TEE_ERROR_BAD_STATE; // } // // return TEE_SUCCESS; //} // void tee_svc_cryp_free_states(struct user_ta_ctx *utc) { struct tee_cryp_state_head *states = &utc->cryp_states; while (!TAILQ_EMPTY(states)) cryp_state_free(utc, TAILQ_FIRST(states)); } TEE_Result utee_cryp_state_free(unsigned long state) { TEE_Result res; struct tee_cryp_state *cs; struct tee_ta_session *sess; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); if (res != TEE_SUCCESS) return res; cryp_state_free(to_user_ta_ctx(sess->ctx), cs); return TEE_SUCCESS; } TEE_Result utee_hash_init(unsigned long state, const void *iv __maybe_unused, size_t iv_len __maybe_unused) { TEE_Result res; struct tee_cryp_state *cs; struct tee_ta_session *sess; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); if (res != TEE_SUCCESS) return res; switch (TEE_ALG_GET_CLASS(cs->algo)) { case TEE_OPERATION_DIGEST: res = crypto_hash_init(cs->ctx, cs->algo); if (res != TEE_SUCCESS) return res; break; case TEE_OPERATION_MAC: { struct tee_obj *o; struct tee_cryp_obj_secret *key; res = tee_obj_get(to_user_ta_ctx(sess->ctx), cs->key1, &o); if (res != TEE_SUCCESS) return res; if ((o->info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) == 0) return TEE_ERROR_BAD_PARAMETERS; key = (struct tee_cryp_obj_secret *)o->attr; res = crypto_mac_init(cs->ctx, cs->algo, (void *)(key + 1), key->key_size); if (res != TEE_SUCCESS) return res; break; } default: return TEE_ERROR_BAD_PARAMETERS; } return TEE_SUCCESS; } TEE_Result utee_hash_update(unsigned long state, const void *chunk, size_t chunk_size) { TEE_Result res; struct tee_cryp_state *cs; struct tee_ta_session *sess; /* No data, but size provided isn’t valid parameters. */ if (!chunk && chunk_size) return TEE_ERROR_BAD_PARAMETERS; /* Zero length hash is valid, but nothing we need to do. */ if (!chunk_size) return TEE_SUCCESS; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)chunk, chunk_size); // if (res != TEE_SUCCESS) // return res; res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); if (res != TEE_SUCCESS) return res; switch (TEE_ALG_GET_CLASS(cs->algo)) { case TEE_OPERATION_DIGEST: res = crypto_hash_update(cs->ctx, cs->algo, chunk, chunk_size); if (res != TEE_SUCCESS) return res; break; case TEE_OPERATION_MAC: res = crypto_mac_update(cs->ctx, cs->algo, chunk, chunk_size); if (res != TEE_SUCCESS) return res; break; default: return TEE_ERROR_BAD_PARAMETERS; } return TEE_SUCCESS; } TEE_Result utee_hash_final(unsigned long state, const void *chunk, size_t chunk_size, void *hash, uint64_t *hash_len) { TEE_Result res, res2; size_t hash_size; uint64_t hlen; struct tee_cryp_state *cs; struct tee_ta_session *sess; /* No data, but size provided isn’t valid parameters. */ if (!chunk && chunk_size) return TEE_ERROR_BAD_PARAMETERS; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)chunk, chunk_size); // if (res != TEE_SUCCESS) // return res; res = tee_svc_copy_from_user(&hlen, hash_len, sizeof(hlen)); if (res != TEE_SUCCESS) return res; // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_WRITE | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)hash, hlen); // if (res != TEE_SUCCESS) // return res; res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); if (res != TEE_SUCCESS) return res; switch (TEE_ALG_GET_CLASS(cs->algo)) { case TEE_OPERATION_DIGEST: res = tee_hash_get_digest_size(cs->algo, &hash_size); if (res != TEE_SUCCESS) return res; if (*hash_len < hash_size) { res = TEE_ERROR_SHORT_BUFFER; goto out; } if (chunk_size) { res = crypto_hash_update(cs->ctx, cs->algo, chunk, chunk_size); if (res != TEE_SUCCESS) return res; } res = crypto_hash_final(cs->ctx, cs->algo, hash, hash_size); if (res != TEE_SUCCESS) return res; break; case TEE_OPERATION_MAC: res = tee_mac_get_digest_size(cs->algo, &hash_size); if (res != TEE_SUCCESS) return res; if (*hash_len < hash_size) { res = TEE_ERROR_SHORT_BUFFER; goto out; } if (chunk_size) { res = crypto_mac_update(cs->ctx, cs->algo, chunk, chunk_size); if (res != TEE_SUCCESS) return res; } res = crypto_mac_final(cs->ctx, cs->algo, hash, hash_size); if (res != TEE_SUCCESS) return res; break; default: return TEE_ERROR_BAD_PARAMETERS; } out: hlen = hash_size; res2 = tee_svc_copy_to_user(hash_len, &hlen, sizeof(*hash_len)); if (res2 != TEE_SUCCESS) return res2; return res; } TEE_Result utee_cipher_init(unsigned long state, const void *iv, size_t iv_len) { TEE_Result res; struct tee_cryp_state *cs; struct tee_ta_session *sess; struct tee_obj *o; struct tee_cryp_obj_secret *key1; struct user_ta_ctx *utc; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; utc = to_user_ta_ctx(sess->ctx); res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); if (res != TEE_SUCCESS) return res; // res = tee_mmu_check_access_rights(utc, // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t) iv, iv_len); // if (res != TEE_SUCCESS) // return res; // res = tee_obj_get(utc, cs->key1, &o); if (res != TEE_SUCCESS) return res; if ((o->info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) == 0) return TEE_ERROR_BAD_PARAMETERS; key1 = o->attr; if (tee_obj_get(utc, cs->key2, &o) == TEE_SUCCESS) { struct tee_cryp_obj_secret *key2 = o->attr; if ((o->info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) == 0) return TEE_ERROR_BAD_PARAMETERS; res = crypto_cipher_init(cs->ctx, cs->algo, cs->mode, (uint8_t *)(key1 + 1), key1->key_size, (uint8_t *)(key2 + 1), key2->key_size, iv, iv_len); } else { res = crypto_cipher_init(cs->ctx, cs->algo, cs->mode, (uint8_t *)(key1 + 1), key1->key_size, NULL, 0, iv, iv_len); } if (res != TEE_SUCCESS) return res; cs->ctx_finalize = crypto_cipher_final; return TEE_SUCCESS; } static TEE_Result tee_svc_cipher_update_helper(unsigned long state, bool last_block, const void *src, size_t src_len, void *dst, uint64_t *dst_len) { TEE_Result res; struct tee_cryp_state *cs; struct tee_ta_session *sess; uint64_t dlen; res = tee_ta_get_current_session(&sess); if (res != TEE_SUCCESS) return res; res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); if (res != TEE_SUCCESS) return res; // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)src, src_len); // if (res != TEE_SUCCESS) // return res; if (!dst_len) { dlen = 0; } else { res = tee_svc_copy_from_user(&dlen, dst_len, sizeof(dlen)); if (res != TEE_SUCCESS) return res; // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_WRITE | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)dst, dlen); // if (res != TEE_SUCCESS) // return res; } if (dlen < src_len) { res = TEE_ERROR_SHORT_BUFFER; goto out; } if (src_len > 0) { /* Permit src_len == 0 to finalize the operation */ res = tee_do_cipher_update(cs->ctx, cs->algo, cs->mode, last_block, src, src_len, dst); } if (last_block && cs->ctx_finalize != NULL) { cs->ctx_finalize(cs->ctx, cs->algo); cs->ctx_finalize = NULL; } out: if ((res == TEE_SUCCESS || res == TEE_ERROR_SHORT_BUFFER) && dst_len != NULL) { TEE_Result res2; dlen = src_len; res2 = tee_svc_copy_to_user(dst_len, &dlen, sizeof(*dst_len)); if (res2 != TEE_SUCCESS) res = res2; } return res; } TEE_Result utee_cipher_update(unsigned long state, const void *src, size_t src_len, void *dst, uint64_t *dst_len) { return tee_svc_cipher_update_helper(state, false /* last_block */, src, src_len, dst, dst_len); } //TEE_Result syscall_cipher_final(unsigned long state, const void *src, // size_t src_len, void *dst, uint64_t *dst_len) //{ // return tee_svc_cipher_update_helper(state, true /* last_block */, // src, src_len, dst, dst_len); //} // //#if defined(CFG_CRYPTO_HKDF) //static TEE_Result get_hkdf_params(const TEE_Attribute *params, // uint32_t param_count, // void **salt, size_t *salt_len, void **info, // size_t *info_len, size_t *okm_len) //{ // size_t n; // enum { SALT = 0x1, LENGTH = 0x2, INFO = 0x4 }; // uint8_t found = 0; // // *salt = *info = NULL; // *salt_len = *info_len = *okm_len = 0; // // for (n = 0; n < param_count; n++) { // switch (params[n].attributeID) { // case TEE_ATTR_HKDF_SALT: // if (!(found & SALT)) { // *salt = params[n].content.ref.buffer; // *salt_len = params[n].content.ref.length; // found |= SALT; // } // break; // case TEE_ATTR_HKDF_OKM_LENGTH: // if (!(found & LENGTH)) { // *okm_len = params[n].content.value.a; // found |= LENGTH; // } // break; // case TEE_ATTR_HKDF_INFO: // if (!(found & INFO)) { // *info = params[n].content.ref.buffer; // *info_len = params[n].content.ref.length; // found |= INFO; // } // break; // default: // /* Unexpected attribute */ // return TEE_ERROR_BAD_PARAMETERS; // } // // } // // if (!(found & LENGTH)) // return TEE_ERROR_BAD_PARAMETERS; // // return TEE_SUCCESS; //} //#endif // //#if defined(CFG_CRYPTO_CONCAT_KDF) //static TEE_Result get_concat_kdf_params(const TEE_Attribute *params, // uint32_t param_count, // void **other_info, // size_t *other_info_len, // size_t *derived_key_len) //{ // size_t n; // enum { LENGTH = 0x1, INFO = 0x2 }; // uint8_t found = 0; // // *other_info = NULL; // *other_info_len = *derived_key_len = 0; // // for (n = 0; n < param_count; n++) { // switch (params[n].attributeID) { // case TEE_ATTR_CONCAT_KDF_OTHER_INFO: // if (!(found & INFO)) { // *other_info = params[n].content.ref.buffer; // *other_info_len = params[n].content.ref.length; // found |= INFO; // } // break; // case TEE_ATTR_CONCAT_KDF_DKM_LENGTH: // if (!(found & LENGTH)) { // *derived_key_len = params[n].content.value.a; // found |= LENGTH; // } // break; // default: // /* Unexpected attribute */ // return TEE_ERROR_BAD_PARAMETERS; // } // } // // if (!(found & LENGTH)) // return TEE_ERROR_BAD_PARAMETERS; // // return TEE_SUCCESS; //} //#endif // //#if defined(CFG_CRYPTO_PBKDF2) //static TEE_Result get_pbkdf2_params(const TEE_Attribute *params, // uint32_t param_count, void **salt, // size_t *salt_len, size_t *derived_key_len, // size_t *iteration_count) //{ // size_t n; // enum { SALT = 0x1, LENGTH = 0x2, COUNT = 0x4 }; // uint8_t found = 0; // // *salt = NULL; // *salt_len = *derived_key_len = *iteration_count = 0; // // for (n = 0; n < param_count; n++) { // switch (params[n].attributeID) { // case TEE_ATTR_PBKDF2_SALT: // if (!(found & SALT)) { // *salt = params[n].content.ref.buffer; // *salt_len = params[n].content.ref.length; // found |= SALT; // } // break; // case TEE_ATTR_PBKDF2_DKM_LENGTH: // if (!(found & LENGTH)) { // *derived_key_len = params[n].content.value.a; // found |= LENGTH; // } // break; // case TEE_ATTR_PBKDF2_ITERATION_COUNT: // if (!(found & COUNT)) { // *iteration_count = params[n].content.value.a; // found |= COUNT; // } // break; // default: // /* Unexpected attribute */ // return TEE_ERROR_BAD_PARAMETERS; // } // } // // if ((found & (LENGTH|COUNT)) != (LENGTH|COUNT)) // return TEE_ERROR_BAD_PARAMETERS; // // return TEE_SUCCESS; //} //#endif // //TEE_Result syscall_cryp_derive_key(unsigned long state, // const struct utee_attribute *usr_params, // unsigned long param_count, unsigned long derived_key) //{ // TEE_Result res = TEE_ERROR_NOT_SUPPORTED; // struct tee_ta_session *sess; // struct tee_obj *ko; // struct tee_obj *so; // struct tee_cryp_state *cs; // struct tee_cryp_obj_secret *sk; // const struct tee_cryp_obj_type_props *type_props; // TEE_Attribute *params = NULL; // struct user_ta_ctx *utc; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // utc = to_user_ta_ctx(sess->ctx); // // res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); // if (res != TEE_SUCCESS) // return res; // // params = malloc(sizeof(TEE_Attribute) * param_count); // if (!params) // return TEE_ERROR_OUT_OF_MEMORY; // res = copy_in_attrs(utc, usr_params, param_count, params); // if (res != TEE_SUCCESS) // goto out; // // /* Get key set in operation */ // res = tee_obj_get(utc, cs->key1, &ko); // if (res != TEE_SUCCESS) // goto out; // // res = tee_obj_get(utc, tee_svc_uref_to_vaddr(derived_key), &so); // if (res != TEE_SUCCESS) // goto out; // // /* Find information needed about the object to initialize */ // sk = so->attr; // // /* Find description of object */ // type_props = tee_svc_find_type_props(so->info.objectType); // if (!type_props) { // res = TEE_ERROR_NOT_SUPPORTED; // goto out; // } // // if (cs->algo == TEE_ALG_DH_DERIVE_SHARED_SECRET) { // size_t alloc_size; // struct bignum *pub; // struct bignum *ss; // // if (param_count != 1 || // params[0].attributeID != TEE_ATTR_DH_PUBLIC_VALUE) { // res = TEE_ERROR_BAD_PARAMETERS; // goto out; // } // // alloc_size = params[0].content.ref.length * 8; // pub = crypto_bignum_allocate(alloc_size); // ss = crypto_bignum_allocate(alloc_size); // if (pub && ss) { // crypto_bignum_bin2bn(params[0].content.ref.buffer, // params[0].content.ref.length, pub); // res = crypto_acipher_dh_shared_secret(ko->attr, // pub, ss); // if (res == TEE_SUCCESS) { // sk->key_size = crypto_bignum_num_bytes(ss); // crypto_bignum_bn2bin(ss, (uint8_t *)(sk + 1)); // so->info.handleFlags |= // TEE_HANDLE_FLAG_INITIALIZED; // set_attribute(so, type_props, // TEE_ATTR_SECRET_VALUE); // } // } else { // res = TEE_ERROR_OUT_OF_MEMORY; // } // crypto_bignum_free(pub); // crypto_bignum_free(ss); // } else if (TEE_ALG_GET_MAIN_ALG(cs->algo) == TEE_MAIN_ALGO_ECDH) { // size_t alloc_size; // struct ecc_public_key key_public; // uint8_t *pt_secret; // unsigned long pt_secret_len; // // if (param_count != 2 || // params[0].attributeID != TEE_ATTR_ECC_PUBLIC_VALUE_X || // params[1].attributeID != TEE_ATTR_ECC_PUBLIC_VALUE_Y) { // res = TEE_ERROR_BAD_PARAMETERS; // goto out; // } // // switch (cs->algo) { // case TEE_ALG_ECDH_P192: // alloc_size = 192; // break; // case TEE_ALG_ECDH_P224: // alloc_size = 224; // break; // case TEE_ALG_ECDH_P256: // alloc_size = 256; // break; // case TEE_ALG_ECDH_P384: // alloc_size = 384; // break; // case TEE_ALG_ECDH_P521: // alloc_size = 521; // break; // default: // res = TEE_ERROR_NOT_IMPLEMENTED; // goto out; // } // // /* Create the public key */ // res = crypto_acipher_alloc_ecc_public_key(&key_public, // alloc_size); // if (res != TEE_SUCCESS) // goto out; // key_public.curve = ((struct ecc_keypair *)ko->attr)->curve; // crypto_bignum_bin2bn(params[0].content.ref.buffer, // params[0].content.ref.length, // key_public.x); // crypto_bignum_bin2bn(params[1].content.ref.buffer, // params[1].content.ref.length, // key_public.y); // // pt_secret = (uint8_t *)(sk + 1); // pt_secret_len = sk->alloc_size; // res = crypto_acipher_ecc_shared_secret(ko->attr, &key_public, // pt_secret, // &pt_secret_len); // // if (res == TEE_SUCCESS) { // sk->key_size = pt_secret_len; // so->info.handleFlags |= TEE_HANDLE_FLAG_INITIALIZED; // set_attribute(so, type_props, TEE_ATTR_SECRET_VALUE); // } // // /* free the public key */ // crypto_acipher_free_ecc_public_key(&key_public); // } //#if defined(CFG_CRYPTO_HKDF) // else if (TEE_ALG_GET_MAIN_ALG(cs->algo) == TEE_MAIN_ALGO_HKDF) { // void *salt, *info; // size_t salt_len, info_len, okm_len; // uint32_t hash_id = TEE_ALG_GET_DIGEST_HASH(cs->algo); // struct tee_cryp_obj_secret *ik = ko->attr; // const uint8_t *ikm = (const uint8_t *)(ik + 1); // // res = get_hkdf_params(params, param_count, &salt, &salt_len, // &info, &info_len, &okm_len); // if (res != TEE_SUCCESS) // goto out; // // /* Requested size must fit into the output object’s buffer */ // if (okm_len > ik->alloc_size) { // res = TEE_ERROR_BAD_PARAMETERS; // goto out; // } // // res = tee_cryp_hkdf(hash_id, ikm, ik->key_size, salt, salt_len, // info, info_len, (uint8_t *)(sk + 1), // okm_len); // if (res == TEE_SUCCESS) { // sk->key_size = okm_len; // so->info.handleFlags |= TEE_HANDLE_FLAG_INITIALIZED; // set_attribute(so, type_props, TEE_ATTR_SECRET_VALUE); // } // } //#endif //#if defined(CFG_CRYPTO_CONCAT_KDF) // else if (TEE_ALG_GET_MAIN_ALG(cs->algo) == TEE_MAIN_ALGO_CONCAT_KDF) { // void *info; // size_t info_len, derived_key_len; // uint32_t hash_id = TEE_ALG_GET_DIGEST_HASH(cs->algo); // struct tee_cryp_obj_secret *ss = ko->attr; // const uint8_t *shared_secret = (const uint8_t *)(ss + 1); // // res = get_concat_kdf_params(params, param_count, &info, // &info_len, &derived_key_len); // if (res != TEE_SUCCESS) // goto out; // // /* Requested size must fit into the output object’s buffer */ // if (derived_key_len > ss->alloc_size) { // res = TEE_ERROR_BAD_PARAMETERS; // goto out; // } // // res = tee_cryp_concat_kdf(hash_id, shared_secret, ss->key_size, // info, info_len, (uint8_t *)(sk + 1), // derived_key_len); // if (res == TEE_SUCCESS) { // sk->key_size = derived_key_len; // so->info.handleFlags |= TEE_HANDLE_FLAG_INITIALIZED; // set_attribute(so, type_props, TEE_ATTR_SECRET_VALUE); // } // } //#endif //#if defined(CFG_CRYPTO_PBKDF2) // else if (TEE_ALG_GET_MAIN_ALG(cs->algo) == TEE_MAIN_ALGO_PBKDF2) { // void *salt; // size_t salt_len, iteration_count, derived_key_len; // uint32_t hash_id = TEE_ALG_GET_DIGEST_HASH(cs->algo); // struct tee_cryp_obj_secret *ss = ko->attr; // const uint8_t *password = (const uint8_t *)(ss + 1); // // res = get_pbkdf2_params(params, param_count, &salt, &salt_len, // &derived_key_len, &iteration_count); // if (res != TEE_SUCCESS) // goto out; // // /* Requested size must fit into the output object’s buffer */ // if (derived_key_len > ss->alloc_size) { // res = TEE_ERROR_BAD_PARAMETERS; // goto out; // } // // res = tee_cryp_pbkdf2(hash_id, password, ss->key_size, salt, // salt_len, iteration_count, // (uint8_t *)(sk + 1), derived_key_len); // if (res == TEE_SUCCESS) { // sk->key_size = derived_key_len; // so->info.handleFlags |= TEE_HANDLE_FLAG_INITIALIZED; // set_attribute(so, type_props, TEE_ATTR_SECRET_VALUE); // } // } //#endif // else // res = TEE_ERROR_NOT_SUPPORTED; // //out: // free(params); // return res; //} // //TEE_Result syscall_cryp_random_number_generate(void *buf, size_t blen) //{ // TEE_Result res; // struct tee_ta_session *sess; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_WRITE | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)buf, blen); // if (res != TEE_SUCCESS) // return res; // // res = crypto_rng_read(buf, blen); // if (res != TEE_SUCCESS) // return res; // // return res; //} // //TEE_Result syscall_authenc_init(unsigned long state, const void *nonce, // size_t nonce_len, size_t tag_len, // size_t aad_len, size_t payload_len) //{ // TEE_Result res; // struct tee_cryp_state *cs; // struct tee_ta_session *sess; // struct tee_obj *o; // struct tee_cryp_obj_secret *key; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // // res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); // if (res != TEE_SUCCESS) // return res; // // res = tee_obj_get(to_user_ta_ctx(sess->ctx), cs->key1, &o); // if (res != TEE_SUCCESS) // return res; // if ((o->info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) == 0) // return TEE_ERROR_BAD_PARAMETERS; // // key = o->attr; // res = crypto_authenc_init(cs->ctx, cs->algo, cs->mode, // (uint8_t *)(key + 1), key->key_size, // nonce, nonce_len, tag_len, aad_len, // payload_len); // if (res != TEE_SUCCESS) // return res; // // cs->ctx_finalize = (tee_cryp_ctx_finalize_func_t)crypto_authenc_final; // return TEE_SUCCESS; //} // //TEE_Result syscall_authenc_update_aad(unsigned long state, // const void *aad_data, size_t aad_data_len) //{ // TEE_Result res; // struct tee_cryp_state *cs; // struct tee_ta_session *sess; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t) aad_data, // aad_data_len); // if (res != TEE_SUCCESS) // return res; // // res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); // if (res != TEE_SUCCESS) // return res; // // res = crypto_authenc_update_aad(cs->ctx, cs->algo, cs->mode, // aad_data, aad_data_len); // if (res != TEE_SUCCESS) // return res; // // return TEE_SUCCESS; //} // //TEE_Result syscall_authenc_update_payload(unsigned long state, // const void *src_data, size_t src_len, void *dst_data, // uint64_t *dst_len) //{ // TEE_Result res; // struct tee_cryp_state *cs; // struct tee_ta_session *sess; // uint64_t dlen; // size_t tmp_dlen; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // // res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); // if (res != TEE_SUCCESS) // return res; // // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t) src_data, src_len); // if (res != TEE_SUCCESS) // return res; // // res = tee_svc_copy_from_user(&dlen, dst_len, sizeof(dlen)); // if (res != TEE_SUCCESS) // return res; // // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_WRITE | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)dst_data, dlen); // if (res != TEE_SUCCESS) // return res; // // if (dlen < src_len) { // res = TEE_ERROR_SHORT_BUFFER; // goto out; // } // // tmp_dlen = dlen; // res = crypto_authenc_update_payload(cs->ctx, cs->algo, cs->mode, // src_data, src_len, dst_data, // &tmp_dlen); // dlen = tmp_dlen; // //out: // if (res == TEE_SUCCESS || res == TEE_ERROR_SHORT_BUFFER) { // TEE_Result res2 = tee_svc_copy_to_user(dst_len, &dlen, // sizeof(*dst_len)); // if (res2 != TEE_SUCCESS) // res = res2; // } // // return res; //} // //TEE_Result syscall_authenc_enc_final(unsigned long state, // const void *src_data, size_t src_len, void *dst_data, // uint64_t *dst_len, void *tag, uint64_t *tag_len) //{ // TEE_Result res; // struct tee_cryp_state *cs; // struct tee_ta_session *sess; // uint64_t dlen; // uint64_t tlen = 0; // size_t tmp_dlen; // size_t tmp_tlen; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // // res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); // if (res != TEE_SUCCESS) // return res; // // if (cs->mode != TEE_MODE_ENCRYPT) // return TEE_ERROR_BAD_PARAMETERS; // // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)src_data, src_len); // if (res != TEE_SUCCESS) // return res; // // if (!dst_len) { // dlen = 0; // } else { // res = tee_svc_copy_from_user(&dlen, dst_len, sizeof(dlen)); // if (res != TEE_SUCCESS) // return res; // // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_WRITE | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)dst_data, dlen); // if (res != TEE_SUCCESS) // return res; // } // // if (dlen < src_len) { // res = TEE_ERROR_SHORT_BUFFER; // goto out; // } // // res = tee_svc_copy_from_user(&tlen, tag_len, sizeof(tlen)); // if (res != TEE_SUCCESS) // return res; // // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_WRITE | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)tag, tlen); // if (res != TEE_SUCCESS) // return res; // // tmp_dlen = dlen; // tmp_tlen = tlen; // res = crypto_authenc_enc_final(cs->ctx, cs->algo, src_data, // src_len, dst_data, &tmp_dlen, tag, // &tmp_tlen); // dlen = tmp_dlen; // tlen = tmp_tlen; // //out: // if (res == TEE_SUCCESS || res == TEE_ERROR_SHORT_BUFFER) { // TEE_Result res2; // // if (dst_len != NULL) { // res2 = tee_svc_copy_to_user(dst_len, &dlen, // sizeof(*dst_len)); // if (res2 != TEE_SUCCESS) // return res2; // } // // res2 = tee_svc_copy_to_user(tag_len, &tlen, sizeof(*tag_len)); // if (res2 != TEE_SUCCESS) // return res2; // } // // return res; //} // //TEE_Result syscall_authenc_dec_final(unsigned long state, // const void *src_data, size_t src_len, void *dst_data, // uint64_t *dst_len, const void *tag, size_t tag_len) //{ // TEE_Result res; // struct tee_cryp_state *cs; // struct tee_ta_session *sess; // uint64_t dlen; // size_t tmp_dlen; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // // res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); // if (res != TEE_SUCCESS) // return res; // // if (cs->mode != TEE_MODE_DECRYPT) // return TEE_ERROR_BAD_PARAMETERS; // // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)src_data, src_len); // if (res != TEE_SUCCESS) // return res; // // if (!dst_len) { // dlen = 0; // } else { // res = tee_svc_copy_from_user(&dlen, dst_len, sizeof(dlen)); // if (res != TEE_SUCCESS) // return res; // // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_WRITE | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)dst_data, dlen); // if (res != TEE_SUCCESS) // return res; // } // // if (dlen < src_len) { // res = TEE_ERROR_SHORT_BUFFER; // goto out; // } // // res = tee_mmu_check_access_rights(to_user_ta_ctx(sess->ctx), // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)tag, tag_len); // if (res != TEE_SUCCESS) // return res; // // tmp_dlen = dlen; // res = crypto_authenc_dec_final(cs->ctx, cs->algo, src_data, src_len, // dst_data, &tmp_dlen, tag, tag_len); // dlen = tmp_dlen; // //out: // if ((res == TEE_SUCCESS || res == TEE_ERROR_SHORT_BUFFER) && // dst_len != NULL) { // TEE_Result res2; // // res2 = tee_svc_copy_to_user(dst_len, &dlen, sizeof(*dst_len)); // if (res2 != TEE_SUCCESS) // return res2; // } // // return res; //} // //static int pkcs1_get_salt_len(const TEE_Attribute *params, uint32_t num_params, // size_t default_len) //{ // size_t n; // // assert(default_len < INT_MAX); // // for (n = 0; n < num_params; n++) { // if (params[n].attributeID == TEE_ATTR_RSA_PSS_SALT_LENGTH) { // if (params[n].content.value.a < INT_MAX) // return params[n].content.value.a; // break; // } // } // /* // * If salt length isn’t provided use the default value which is // * the length of the digest. // */ // return default_len; //} // //TEE_Result syscall_asymm_operate(unsigned long state, // const struct utee_attribute *usr_params, // size_t num_params, const void *src_data, size_t src_len, // void *dst_data, uint64_t *dst_len) //{ // TEE_Result res; // struct tee_cryp_state *cs; // struct tee_ta_session *sess; // uint64_t dlen64; // size_t dlen; // struct tee_obj *o; // void *label = NULL; // size_t label_len = 0; // size_t n; // int salt_len; // TEE_Attribute *params = NULL; // struct user_ta_ctx *utc; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // utc = to_user_ta_ctx(sess->ctx); // // res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); // if (res != TEE_SUCCESS) // return res; // // res = tee_mmu_check_access_rights( // utc, // TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t) src_data, src_len); // if (res != TEE_SUCCESS) // return res; // // res = tee_svc_copy_from_user(&dlen64, dst_len, sizeof(dlen64)); // if (res != TEE_SUCCESS) // return res; // dlen = dlen64; // // res = tee_mmu_check_access_rights( // utc, // TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_WRITE | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t) dst_data, dlen); // if (res != TEE_SUCCESS) // return res; // // params = malloc(sizeof(TEE_Attribute) * num_params); // if (!params) // return TEE_ERROR_OUT_OF_MEMORY; // res = copy_in_attrs(utc, usr_params, num_params, params); // if (res != TEE_SUCCESS) // goto out; // // res = tee_obj_get(utc, cs->key1, &o); // if (res != TEE_SUCCESS) // goto out; // if ((o->info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) == 0) { // res = TEE_ERROR_GENERIC; // goto out; // } // // switch (cs->algo) { // case TEE_ALG_RSA_NOPAD: // if (cs->mode == TEE_MODE_ENCRYPT) { // res = crypto_acipher_rsanopad_encrypt(o->attr, src_data, // src_len, dst_data, // &dlen); // } else if (cs->mode == TEE_MODE_DECRYPT) { // res = crypto_acipher_rsanopad_decrypt(o->attr, src_data, // src_len, dst_data, // &dlen); // } else { // /* // * We will panic because “the mode is not compatible // * with the function” // */ // res = TEE_ERROR_GENERIC; // } // break; // // case TEE_ALG_RSAES_PKCS1_V1_5: // case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA1: // case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA224: // case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA256: // case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA384: // case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA512: // for (n = 0; n < num_params; n++) { // if (params[n].attributeID == TEE_ATTR_RSA_OAEP_LABEL) { // label = params[n].content.ref.buffer; // label_len = params[n].content.ref.length; // break; // } // } // // if (cs->mode == TEE_MODE_ENCRYPT) { // res = crypto_acipher_rsaes_encrypt(cs->algo, o->attr, // label, label_len, // src_data, src_len, // dst_data, &dlen); // } else if (cs->mode == TEE_MODE_DECRYPT) { // res = crypto_acipher_rsaes_decrypt( // cs->algo, o->attr, label, label_len, // src_data, src_len, dst_data, &dlen); // } else { // res = TEE_ERROR_BAD_PARAMETERS; // } // break; // // case TEE_ALG_RSASSA_PKCS1_V1_5_MD5: // case TEE_ALG_RSASSA_PKCS1_V1_5_SHA1: // case TEE_ALG_RSASSA_PKCS1_V1_5_SHA224: // case TEE_ALG_RSASSA_PKCS1_V1_5_SHA256: // case TEE_ALG_RSASSA_PKCS1_V1_5_SHA384: // case TEE_ALG_RSASSA_PKCS1_V1_5_SHA512: // case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA1: // case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA224: // case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA256: // case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA384: // case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA512: // if (cs->mode != TEE_MODE_SIGN) { // res = TEE_ERROR_BAD_PARAMETERS; // break; // } // salt_len = pkcs1_get_salt_len(params, num_params, src_len); // res = crypto_acipher_rsassa_sign(cs->algo, o->attr, salt_len, // src_data, src_len, dst_data, // &dlen); // break; // // case TEE_ALG_DSA_SHA1: // case TEE_ALG_DSA_SHA224: // case TEE_ALG_DSA_SHA256: // res = crypto_acipher_dsa_sign(cs->algo, o->attr, src_data, // src_len, dst_data, &dlen); // break; // case TEE_ALG_ECDSA_P192: // case TEE_ALG_ECDSA_P224: // case TEE_ALG_ECDSA_P256: // case TEE_ALG_ECDSA_P384: // case TEE_ALG_ECDSA_P521: // res = crypto_acipher_ecc_sign(cs->algo, o->attr, src_data, // src_len, dst_data, &dlen); // break; // // default: // res = TEE_ERROR_BAD_PARAMETERS; // break; // } // //out: // free(params); // // if (res == TEE_SUCCESS || res == TEE_ERROR_SHORT_BUFFER) { // TEE_Result res2; // // dlen64 = dlen; // res2 = tee_svc_copy_to_user(dst_len, &dlen64, sizeof(*dst_len)); // if (res2 != TEE_SUCCESS) // return res2; // } // // return res; //} // //TEE_Result syscall_asymm_verify(unsigned long state, // const struct utee_attribute *usr_params, // size_t num_params, const void *data, size_t data_len, // const void *sig, size_t sig_len) //{ // TEE_Result res; // struct tee_cryp_state *cs; // struct tee_ta_session *sess; // struct tee_obj *o; // size_t hash_size; // int salt_len; // TEE_Attribute *params = NULL; // uint32_t hash_algo; // struct user_ta_ctx *utc; // // res = tee_ta_get_current_session(&sess); // if (res != TEE_SUCCESS) // return res; // utc = to_user_ta_ctx(sess->ctx); // // res = tee_svc_cryp_get_state(sess, tee_svc_uref_to_vaddr(state), &cs); // if (res != TEE_SUCCESS) // return res; // // if (cs->mode != TEE_MODE_VERIFY) // return TEE_ERROR_BAD_PARAMETERS; // // res = tee_mmu_check_access_rights(utc, // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)data, data_len); // if (res != TEE_SUCCESS) // return res; // // res = tee_mmu_check_access_rights(utc, // TEE_MEMORY_ACCESS_READ | // TEE_MEMORY_ACCESS_ANY_OWNER, // (uaddr_t)sig, sig_len); // if (res != TEE_SUCCESS) // return res; // // params = malloc(sizeof(TEE_Attribute) * num_params); // if (!params) // return TEE_ERROR_OUT_OF_MEMORY; // res = copy_in_attrs(utc, usr_params, num_params, params); // if (res != TEE_SUCCESS) // goto out; // // res = tee_obj_get(utc, cs->key1, &o); // if (res != TEE_SUCCESS) // goto out; // if ((o->info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) == 0) { // res = TEE_ERROR_BAD_PARAMETERS; // goto out; // } // // switch (TEE_ALG_GET_MAIN_ALG(cs->algo)) { // case TEE_MAIN_ALGO_RSA: // hash_algo = TEE_DIGEST_HASH_TO_ALGO(cs->algo); // res = tee_hash_get_digest_size(hash_algo, &hash_size); // if (res != TEE_SUCCESS) // break; // if (data_len != hash_size) { // res = TEE_ERROR_BAD_PARAMETERS; // break; // } // salt_len = pkcs1_get_salt_len(params, num_params, hash_size); // res = crypto_acipher_rsassa_verify(cs->algo, o->attr, salt_len, // data, data_len, sig, // sig_len); // break; // // case TEE_MAIN_ALGO_DSA: // hash_algo = TEE_DIGEST_HASH_TO_ALGO(cs->algo); // res = tee_hash_get_digest_size(hash_algo, &hash_size); // if (res != TEE_SUCCESS) // break; // /* // * Depending on the DSA algorithm (NIST), the digital signature // * output size may be truncated to the size of a key pair // * (Q prime size). Q prime size must be less or equal than the // * hash output length of the hash algorithm involved. // */ // if (data_len > hash_size) { // res = TEE_ERROR_BAD_PARAMETERS; // break; // } // res = crypto_acipher_dsa_verify(cs->algo, o->attr, data, // data_len, sig, sig_len); // break; // // case TEE_MAIN_ALGO_ECDSA: // res = crypto_acipher_ecc_verify(cs->algo, o->attr, data, // data_len, sig, sig_len); // break; // // default: // res = TEE_ERROR_NOT_SUPPORTED; // } // //out: // free(params); // return res; //}