155714Skris/* crypto/pem/pem_sign.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 8280297Sjkim * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15280297Sjkim * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 22280297Sjkim * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 37280297Sjkim * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40280297Sjkim * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 52280297Sjkim * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#include <stdio.h> 6055714Skris#include "cryptlib.h" 6155714Skris#include <openssl/rand.h> 6255714Skris#include <openssl/evp.h> 6355714Skris#include <openssl/objects.h> 6455714Skris#include <openssl/x509.h> 6555714Skris#include <openssl/pem.h> 6655714Skris 6755714Skrisvoid PEM_SignInit(EVP_MD_CTX *ctx, EVP_MD *type) 68280297Sjkim{ 69280297Sjkim EVP_DigestInit_ex(ctx, type, NULL); 70280297Sjkim} 7155714Skris 72280297Sjkimvoid PEM_SignUpdate(EVP_MD_CTX *ctx, unsigned char *data, unsigned int count) 73280297Sjkim{ 74280297Sjkim EVP_DigestUpdate(ctx, data, count); 75280297Sjkim} 7655714Skris 77280297Sjkimint PEM_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, 78280297Sjkim unsigned int *siglen, EVP_PKEY *pkey) 79280297Sjkim{ 80280297Sjkim unsigned char *m; 81280297Sjkim int i, ret = 0; 82280297Sjkim unsigned int m_len; 8355714Skris 84280297Sjkim m = (unsigned char *)OPENSSL_malloc(EVP_PKEY_size(pkey) + 2); 85280297Sjkim if (m == NULL) { 86280297Sjkim PEMerr(PEM_F_PEM_SIGNFINAL, ERR_R_MALLOC_FAILURE); 87280297Sjkim goto err; 88280297Sjkim } 8955714Skris 90280297Sjkim if (EVP_SignFinal(ctx, m, &m_len, pkey) <= 0) 91280297Sjkim goto err; 9255714Skris 93280297Sjkim i = EVP_EncodeBlock(sigret, m, m_len); 94280297Sjkim *siglen = i; 95280297Sjkim ret = 1; 96280297Sjkim err: 97280297Sjkim /* ctx has been zeroed by EVP_SignFinal() */ 98280297Sjkim if (m != NULL) 99280297Sjkim OPENSSL_free(m); 100280297Sjkim return (ret); 101280297Sjkim} 102