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Diffstat (limited to 'openssl/crypto/evp/p_open.c')
| -rw-r--r-- | openssl/crypto/evp/p_open.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/openssl/crypto/evp/p_open.c b/openssl/crypto/evp/p_open.c new file mode 100644 index 000000000..9935206d0 --- /dev/null +++ b/openssl/crypto/evp/p_open.c @@ -0,0 +1,127 @@ +/* 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(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); + EVP_DecryptInit_ex(ctx,NULL,NULL,NULL,NULL); + return(i); + } +#else /* !OPENSSL_NO_RSA */ + +# ifdef PEDANTIC +static void *dummy=&dummy; +# endif + +#endif |