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bdc3f44a6b
Implement digest shim layer on top of MbedTLS crypto library. Introduce <alg>_MBEDTLS kconfig for MbedTLS crypto implementations. Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Hash shim layer on MbedTLS Crypto library
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*
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* Copyright (c) 2024 Linaro Limited
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* Author: Raymond Mao <raymond.mao@linaro.org>
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*/
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#ifndef USE_HOSTCC
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#include <cyclic.h>
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#endif /* USE_HOSTCC */
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#include <compiler.h>
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#include <u-boot/sha512.h>
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const u8 sha384_der_prefix[SHA384_DER_LEN] = {
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0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
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0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02, 0x05,
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0x00, 0x04, 0x30
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};
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const u8 sha512_der_prefix[SHA512_DER_LEN] = {
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0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
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0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, 0x05,
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0x00, 0x04, 0x40
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};
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void sha384_starts(sha512_context *ctx)
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{
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mbedtls_sha512_init(ctx);
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mbedtls_sha512_starts(ctx, 1);
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}
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void
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sha384_update(sha512_context *ctx, const uint8_t *input, uint32_t length)
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{
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mbedtls_sha512_update(ctx, input, length);
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}
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void sha384_finish(sha512_context *ctx, uint8_t digest[SHA384_SUM_LEN])
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{
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mbedtls_sha512_finish(ctx, digest);
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mbedtls_sha512_free(ctx);
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}
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void sha384_csum_wd(const unsigned char *input, unsigned int length,
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unsigned char *output, unsigned int chunk_sz)
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{
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mbedtls_sha512(input, length, output, 1);
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}
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void sha512_starts(sha512_context *ctx)
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{
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mbedtls_sha512_init(ctx);
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mbedtls_sha512_starts(ctx, 0);
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}
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void
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sha512_update(sha512_context *ctx, const uint8_t *input, uint32_t length)
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{
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mbedtls_sha512_update(ctx, input, length);
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}
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void sha512_finish(sha512_context *ctx, uint8_t digest[SHA512_SUM_LEN])
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{
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mbedtls_sha512_finish(ctx, digest);
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mbedtls_sha512_free(ctx);
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}
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void sha512_csum_wd(const unsigned char *input, unsigned int ilen,
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unsigned char *output, unsigned int chunk_sz)
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{
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sha512_context ctx;
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sha512_starts(&ctx);
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if (IS_ENABLED(CONFIG_HW_WATCHDOG) || IS_ENABLED(CONFIG_WATCHDOG)) {
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const unsigned char *curr = input;
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const unsigned char *end = input + ilen;
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int chunk;
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while (curr < end) {
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chunk = end - curr;
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if (chunk > chunk_sz)
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chunk = chunk_sz;
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sha512_update(&ctx, curr, chunk);
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curr += chunk;
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schedule();
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}
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} else {
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sha512_update(&ctx, input, ilen);
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}
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sha512_finish(&ctx, output);
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}
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