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NAMEEVP_VerifyInit_ex, EVP_VerifyInit, EVP_VerifyUpdate, EVP_VerifyFinal - EVP signature verification functions
SYNOPSIS#include <openssl/evp.h> int EVP_VerifyInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl); int EVP_VerifyUpdate(EVP_MD_CTX *ctx, const void *d, unsigned int cnt); int EVP_VerifyFinal(EVP_MD_CTX *ctx, unsigned char *sigbuf, unsigned int siglen, EVP_PKEY *pkey); int EVP_VerifyInit(EVP_MD_CTX *ctx, const EVP_MD *type);
DESCRIPTIONThe EVP signature verification routines are a high-level interface to digital signatures.
RETURN VALUES
The error codes can be obtained by ERR_get_error(3).
NOTESThe EVP interface to digital signatures should almost always be used in preference to the low-level interfaces. This is because the code then becomes transparent to the algorithm used and much more flexible. The call to Since only a copy of the digest context is ever finalized the context must
be cleaned up after use by calling
BUGSOlder versions of this documentation wrongly stated that calls to
Since the public key is passed in the call to It is not possible to change the signing parameters using these function. The previous two bugs are fixed in the newer EVP_DigestVerify*() function.
SEE ALSOevp(7), EVP_SignInit(3), EVP_DigestInit(3), evp(7), HMAC(3), MD2(3), MD5(3), MDC2(3), RIPEMD160(3), SHA1(3), dgst(1)
COPYRIGHTCopyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.html. |
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