/* crypto/evp/p_open.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" #ifndef OPENSSL_NO_RSA #include <openssl/evp.h> #include <openssl/objects.h> #include <openssl/x509.h> #include <openssl/rsa.h> int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type, const unsigned char *ek, int ekl, const unsigned char *iv, EVP_PKEY *priv) { unsigned char *key=NULL; int i,size=0,ret=0; if(type) { EVP_CIPHER_CTX_init(ctx); if(!EVP_DecryptInit_ex(ctx,type,NULL, NULL,NULL)) return 0; } if(!priv) return 1; if (priv->type != EVP_PKEY_RSA) { EVPerr(EVP_F_EVP_OPENINIT,EVP_R_PUBLIC_KEY_NOT_RSA); goto err; } size=RSA_size(priv->pkey.rsa); key=(unsigned char *)OPENSSL_malloc(size+2); if (key == NULL) { /* ERROR */ EVPerr(EVP_F_EVP_OPENINIT,ERR_R_MALLOC_FAILURE); goto err; } i=EVP_PKEY_decrypt_old(key,ek,ekl,priv); if ((i <= 0) || !EVP_CIPHER_CTX_set_key_length(ctx, i)) { /* ERROR */ goto err; } if(!EVP_DecryptInit_ex(ctx,NULL,NULL,key,iv)) goto err; ret=1; err: if (key != NULL) OPENSSL_cleanse(key,size); OPENSSL_free(key); return(ret); } int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) { int i; i=EVP_DecryptFinal_ex(ctx,out,outl); if (i) i = EVP_DecryptInit_ex(ctx,NULL,NULL,NULL,NULL); return(i); } #else /* !OPENSSL_NO_RSA */ # ifdef PEDANTIC static void *dummy=&dummy; # endif #endif