Viewing file:  pem_sign.c (1.28 KB) -rw-r--r--
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/*
* Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (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
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
int PEM_SignInit(EVP_MD_CTX *ctx, EVP_MD *type)
{
return EVP_DigestInit_ex(ctx, type, NULL);
}
int PEM_SignUpdate(EVP_MD_CTX *ctx,
const unsigned char *data, unsigned int count)
{
return EVP_DigestUpdate(ctx, data, count);
}
int PEM_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret,
unsigned int *siglen, EVP_PKEY *pkey)
{
unsigned char *m;
int i, ret = 0;
unsigned int m_len;
m = OPENSSL_malloc(EVP_PKEY_get_size(pkey));
if (m == NULL) {
ERR_raise(ERR_LIB_PEM, ERR_R_MALLOC_FAILURE);
goto err;
}
if (EVP_SignFinal(ctx, m, &m_len, pkey) <= 0)
goto err;
i = EVP_EncodeBlock(sigret, m, m_len);
*siglen = i;
ret = 1;
err:
/* ctx has been zeroed by EVP_SignFinal() */
OPENSSL_free(m);
return ret;
}
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