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50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/*
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* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include <openssl/x509.h>
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#include <openssl/pem.h>
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int PEM_SignInit(EVP_MD_CTX *ctx, EVP_MD *type)
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{
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return EVP_DigestInit_ex(ctx, type, NULL);
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}
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int PEM_SignUpdate(EVP_MD_CTX *ctx, unsigned char *data, unsigned int count)
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{
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return EVP_DigestUpdate(ctx, data, count);
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}
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int PEM_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret,
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unsigned int *siglen, EVP_PKEY *pkey)
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{
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unsigned char *m;
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int i, ret = 0;
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unsigned int m_len;
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m = OPENSSL_malloc(EVP_PKEY_size(pkey) + 2);
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if (m == NULL) {
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PEMerr(PEM_F_PEM_SIGNFINAL, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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if (EVP_SignFinal(ctx, m, &m_len, pkey) <= 0)
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goto err;
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i = EVP_EncodeBlock(sigret, m, m_len);
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*siglen = i;
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ret = 1;
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err:
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/* ctx has been zeroed by EVP_SignFinal() */
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OPENSSL_free(m);
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return ret;
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}
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