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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>
57 lines
1.2 KiB
C
57 lines
1.2 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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#include "compiler.h"
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#ifndef USE_HOSTCC
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#include <watchdog.h>
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#endif /* USE_HOSTCC */
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#include <u-boot/md5.h>
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void MD5Init(MD5Context *ctx)
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{
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mbedtls_md5_init(ctx);
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mbedtls_md5_starts(ctx);
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}
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void MD5Update(MD5Context *ctx, unsigned char const *buf, unsigned int len)
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{
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mbedtls_md5_update(ctx, buf, len);
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}
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void MD5Final(unsigned char digest[16], MD5Context *ctx)
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{
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mbedtls_md5_finish(ctx, digest);
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mbedtls_md5_free(ctx);
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}
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void md5_wd(const unsigned char *input, unsigned int len,
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unsigned char output[16], unsigned int chunk_sz)
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{
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MD5Context context;
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MD5Init(&context);
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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 + len;
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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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MD5Update(&context, 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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MD5Update(&context, input, len);
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}
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MD5Final(output, &context);
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}
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