Raymond Mao | f51f355 | 2024-10-03 14:50:19 -0700 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * Hash shim layer on MbedTLS Crypto library |
| 4 | * |
| 5 | * Copyright (c) 2024 Linaro Limited |
| 6 | * Author: Raymond Mao <raymond.mao@linaro.org> |
| 7 | */ |
| 8 | #ifndef USE_HOSTCC |
| 9 | #include <cyclic.h> |
| 10 | #endif /* USE_HOSTCC */ |
| 11 | #include <u-boot/sha256.h> |
| 12 | |
Philippe Reynes | 496c006 | 2024-12-19 14:05:50 +0100 | [diff] [blame^] | 13 | #include <mbedtls/md.h> |
| 14 | |
Raymond Mao | f51f355 | 2024-10-03 14:50:19 -0700 | [diff] [blame] | 15 | const u8 sha256_der_prefix[SHA256_DER_LEN] = { |
| 16 | 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, |
| 17 | 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, |
| 18 | 0x00, 0x04, 0x20 |
| 19 | }; |
| 20 | |
| 21 | void sha256_starts(sha256_context *ctx) |
| 22 | { |
| 23 | mbedtls_sha256_init(ctx); |
| 24 | mbedtls_sha256_starts(ctx, 0); |
| 25 | } |
| 26 | |
| 27 | void |
| 28 | sha256_update(sha256_context *ctx, const uint8_t *input, uint32_t length) |
| 29 | { |
| 30 | mbedtls_sha256_update(ctx, input, length); |
| 31 | } |
| 32 | |
| 33 | void sha256_finish(sha256_context *ctx, uint8_t digest[SHA256_SUM_LEN]) |
| 34 | { |
| 35 | mbedtls_sha256_finish(ctx, digest); |
| 36 | mbedtls_sha256_free(ctx); |
| 37 | } |
Philippe Reynes | 496c006 | 2024-12-19 14:05:50 +0100 | [diff] [blame^] | 38 | |
| 39 | int sha256_hmac(const unsigned char *key, int keylen, |
| 40 | const unsigned char *input, unsigned int ilen, |
| 41 | unsigned char *output) |
| 42 | { |
| 43 | const mbedtls_md_info_t *md; |
| 44 | |
| 45 | md = mbedtls_md_info_from_type(MBEDTLS_MD_SHA256); |
| 46 | if (!md) |
| 47 | return MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE; |
| 48 | |
| 49 | return mbedtls_md_hmac(md, key, keylen, input, ilen, output); |
| 50 | } |