2 * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include <openssl/sha.h>
11 #include <openssl/crypto.h>
12 #include <openssl/core_numbers.h>
14 static int sha256_final(void *ctx,
15 unsigned char *md, size_t *mdl, size_t mdsz)
17 if (mdsz >= SHA256_DIGEST_LENGTH
18 && SHA256_Final(md, ctx)) {
19 *mdl = SHA256_DIGEST_LENGTH;
26 static void *sha256_newctx(void)
28 SHA256_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
33 static void sha256_freectx(void *vctx)
35 SHA256_CTX *ctx = (SHA256_CTX *)vctx;
37 OPENSSL_clear_free(ctx, sizeof(*ctx));
40 static void *sha256_dupctx(void *ctx)
42 SHA256_CTX *in = (SHA256_CTX *)ctx;
43 SHA256_CTX *ret = OPENSSL_malloc(sizeof(*ret));
50 static size_t sha256_size(void)
52 return SHA256_DIGEST_LENGTH;
55 static size_t sha256_block_size(void)
60 extern const OSSL_DISPATCH sha256_functions[];
61 const OSSL_DISPATCH sha256_functions[] = {
62 { OSSL_FUNC_DIGEST_NEWCTX, (void (*)(void))sha256_newctx },
63 { OSSL_FUNC_DIGEST_INIT, (void (*)(void))SHA256_Init },
64 { OSSL_FUNC_DIGEST_UPDDATE, (void (*)(void))SHA256_Update },
65 { OSSL_FUNC_DIGEST_FINAL, (void (*)(void))sha256_final },
66 { OSSL_FUNC_DIGEST_FREECTX, (void (*)(void))sha256_freectx },
67 { OSSL_FUNC_DIGEST_DUPCTX, (void (*)(void))sha256_dupctx },
68 { OSSL_FUNC_DIGEST_SIZE, (void (*)(void))sha256_size },
69 { OSSL_FUNC_DIGEST_BLOCK_SIZE, (void (*)(void))sha256_block_size },