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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/evp/p_verify.c
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2 * Copyright 1995-2016 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
11 #include "internal/cryptlib.h"
12 #include <openssl/evp.h>
13 #include <openssl/objects.h>
14 #include <openssl/x509.h>
15 #include "crypto/evp.h"
17 int EVP_VerifyFinal_ex(EVP_MD_CTX
*ctx
, const unsigned char *sigbuf
,
18 unsigned int siglen
, EVP_PKEY
*pkey
, OPENSSL_CTX
*libctx
,
21 unsigned char m
[EVP_MAX_MD_SIZE
];
22 unsigned int m_len
= 0;
24 EVP_PKEY_CTX
*pkctx
= NULL
;
26 if (EVP_MD_CTX_test_flags(ctx
, EVP_MD_CTX_FLAG_FINALISE
)) {
27 if (!EVP_DigestFinal_ex(ctx
, m
, &m_len
))
31 EVP_MD_CTX
*tmp_ctx
= EVP_MD_CTX_new();
33 if (tmp_ctx
== NULL
) {
34 EVPerr(0, ERR_R_MALLOC_FAILURE
);
37 rv
= EVP_MD_CTX_copy_ex(tmp_ctx
, ctx
);
39 rv
= EVP_DigestFinal_ex(tmp_ctx
, m
, &m_len
);
40 EVP_MD_CTX_free(tmp_ctx
);
46 pkctx
= EVP_PKEY_CTX_new_from_pkey(libctx
, pkey
, propq
);
49 if (EVP_PKEY_verify_init(pkctx
) <= 0)
51 if (EVP_PKEY_CTX_set_signature_md(pkctx
, EVP_MD_CTX_md(ctx
)) <= 0)
53 i
= EVP_PKEY_verify(pkctx
, sigbuf
, siglen
, m
, m_len
);
55 EVP_PKEY_CTX_free(pkctx
);
59 int EVP_VerifyFinal(EVP_MD_CTX
*ctx
, const unsigned char *sigbuf
,
60 unsigned int siglen
, EVP_PKEY
*pkey
)
62 return EVP_VerifyFinal_ex(ctx
, sigbuf
, siglen
, pkey
, NULL
, NULL
);