50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/*
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* This software is licensed under the terms of the MIT License.
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* See COPYING for further information.
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* ---
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* Copyright (c) 2011-2024, Lukas Weber <laochailan@web.de>.
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* Copyright (c) 2012-2024, Andrei Alexeyev <akari@taisei-project.org>.
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*/
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#include "sha256.h"
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#include "util/stringops.h"
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#include <openssl/evp.h>
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SHA256State *sha256_new(void) {
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EVP_MD_CTX *ctx = EVP_MD_CTX_new();
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EVP_DigestInit(ctx, EVP_sha256());
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return (SHA256State*)ctx;
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}
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void sha256_free(SHA256State *st) {
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EVP_MD_CTX_free((EVP_MD_CTX*)st);
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}
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void sha256_update(SHA256State *st, const uint8_t *data, size_t len) {
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EVP_DigestUpdate((EVP_MD_CTX*)st, data, len);
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}
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void sha256_final(SHA256State *st, uint8_t hash[SHA256_BLOCK_SIZE], size_t hashlen) {
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assert(hashlen >= SHA256_BLOCK_SIZE);
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uint osize = 0;
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EVP_DigestFinal_ex((EVP_MD_CTX*)st, hash, &osize);
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assert(osize == SHA256_BLOCK_SIZE);
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}
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void sha256_digest(const uint8_t *data, size_t len, uint8_t hash[SHA256_BLOCK_SIZE], size_t hashlen) {
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assert(hashlen >= SHA256_BLOCK_SIZE);
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SHA256State *st = sha256_new();
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sha256_update(st, data, len);
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sha256_final(st, hash, hashlen);
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sha256_free(st);
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}
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void sha256_hexdigest(const uint8_t *data, size_t len, char hash[SHA256_HEXDIGEST_SIZE], size_t hashlen) {
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assert(hashlen >= SHA256_HEXDIGEST_SIZE);
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uint8_t digest[SHA256_BLOCK_SIZE];
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sha256_digest(data, len, digest, sizeof(digest));
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hexdigest(digest, sizeof(digest), hash, hashlen);
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}
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