| // SPDX-License-Identifier: BSD-2-Clause |
| /* |
| * Copyright (C) 2018, ARM Limited |
| * Copyright (C) 2019, Linaro Limited |
| * Copyright (C) 2019 Huawei Technologies Co., Ltd |
| */ |
| |
| #include <assert.h> |
| #include <compiler.h> |
| #include <crypto/crypto.h> |
| #include <crypto/crypto_impl.h> |
| #include <stdlib.h> |
| #include <string_ext.h> |
| #include <string.h> |
| #include <tee_api_types.h> |
| #include <utee_defines.h> |
| #include <util.h> |
| |
| #include "sm3.h" |
| |
| struct sm3_hash_ctx { |
| struct crypto_hash_ctx hash_ctx; |
| struct sm3_context sm3_ctx; |
| }; |
| |
| static const struct crypto_hash_ops sm3_hash_ops; |
| |
| static struct sm3_hash_ctx *to_hash_ctx(struct crypto_hash_ctx *ctx) |
| { |
| assert(ctx && ctx->ops == &sm3_hash_ops); |
| |
| return container_of(ctx, struct sm3_hash_ctx, hash_ctx); |
| } |
| |
| static TEE_Result op_sm3_hash_init(struct crypto_hash_ctx *ctx) |
| { |
| sm3_init(&to_hash_ctx(ctx)->sm3_ctx); |
| |
| return TEE_SUCCESS; |
| } |
| |
| static TEE_Result op_sm3_hash_update(struct crypto_hash_ctx *ctx, |
| const uint8_t *data, size_t len) |
| { |
| sm3_update(&to_hash_ctx(ctx)->sm3_ctx, data, len); |
| |
| return TEE_SUCCESS; |
| } |
| |
| static TEE_Result op_sm3_hash_final(struct crypto_hash_ctx *ctx, |
| uint8_t *digest, |
| size_t len) |
| { |
| struct sm3_hash_ctx *hc = to_hash_ctx(ctx); |
| size_t hash_size = TEE_SM3_HASH_SIZE; |
| uint8_t block_digest[TEE_SM3_HASH_SIZE] = { 0 }; |
| uint8_t *tmp_digest = NULL; |
| |
| if (len == 0) |
| return TEE_ERROR_BAD_PARAMETERS; |
| |
| if (hash_size > len) |
| tmp_digest = block_digest; /* use a tempory buffer */ |
| else |
| tmp_digest = digest; |
| |
| sm3_final(&hc->sm3_ctx, tmp_digest); |
| |
| if (hash_size > len) |
| memcpy(digest, tmp_digest, len); |
| |
| return TEE_SUCCESS; |
| } |
| |
| static void op_sm3_hash_free_ctx(struct crypto_hash_ctx *ctx) |
| { |
| struct sm3_hash_ctx *hc = to_hash_ctx(ctx); |
| |
| memzero_explicit(&hc->sm3_ctx, sizeof(hc->sm3_ctx)); |
| free(hc); |
| } |
| |
| static void op_sm3_hash_copy_state(struct crypto_hash_ctx *dst_ctx, |
| struct crypto_hash_ctx *src_ctx) |
| { |
| struct sm3_hash_ctx *src = to_hash_ctx(src_ctx); |
| struct sm3_hash_ctx *dst = to_hash_ctx(dst_ctx); |
| |
| dst->sm3_ctx = src->sm3_ctx; |
| } |
| |
| static const struct crypto_hash_ops sm3_hash_ops = { |
| .init = op_sm3_hash_init, |
| .update = op_sm3_hash_update, |
| .final = op_sm3_hash_final, |
| .free_ctx = op_sm3_hash_free_ctx, |
| .copy_state = op_sm3_hash_copy_state, |
| }; |
| |
| TEE_Result crypto_sm3_alloc_ctx(struct crypto_hash_ctx **ctx) |
| { |
| struct sm3_hash_ctx *hc = NULL; |
| |
| hc = calloc(1, sizeof(*hc)); |
| if (!hc) |
| return TEE_ERROR_OUT_OF_MEMORY; |
| |
| hc->hash_ctx.ops = &sm3_hash_ops; |
| |
| *ctx = &hc->hash_ctx; |
| |
| return TEE_SUCCESS; |
| } |