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mTower/tee/tee/tee_svc_cryp.c
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| // SPDX-License-Identifier: BSD-2-Clause | |
| /* | |
| * Copyright (c) 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; | |
| //} |