diff options
Diffstat (limited to 'thirdparty/openssl/crypto/evp/p_open.c')
| -rw-r--r-- | thirdparty/openssl/crypto/evp/p_open.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/thirdparty/openssl/crypto/evp/p_open.c b/thirdparty/openssl/crypto/evp/p_open.c new file mode 100644 index 0000000000..229eb6417a --- /dev/null +++ b/thirdparty/openssl/crypto/evp/p_open.c @@ -0,0 +1,129 @@ +/* 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 |