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Revision 0ee5fcde06827b041023e5a596d58da98e53740c authored by Matt Caswell on 12 June 2015, 15:10:40 UTC, committed by Matt Caswell on 12 June 2015, 15:10:40 UTC
Prepare for 1.0.2c release
Reviewed-by: Richard Levitte <levitte@openssl.org>
1 parent d4c1763
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  • 6c14f48
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  • crypto
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  • pem
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  • pem_sign.c
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pem_sign.c
/* crypto/pem/pem_sign.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/rand.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/pem.h>

void PEM_SignInit(EVP_MD_CTX *ctx, EVP_MD *type)
{
    EVP_DigestInit_ex(ctx, type, NULL);
}

void PEM_SignUpdate(EVP_MD_CTX *ctx, unsigned char *data, unsigned int count)
{
    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 = (unsigned char *)OPENSSL_malloc(EVP_PKEY_size(pkey) + 2);
    if (m == NULL) {
        PEMerr(PEM_F_PEM_SIGNFINAL, 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() */
    if (m != NULL)
        OPENSSL_free(m);
    return (ret);
}
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