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Diffstat (limited to 'openssl/crypto/evp/p_seal.c')
| -rw-r--r-- | openssl/crypto/evp/p_seal.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/openssl/crypto/evp/p_seal.c b/openssl/crypto/evp/p_seal.c new file mode 100644 index 00000000..d8324526 --- /dev/null +++ b/openssl/crypto/evp/p_seal.c @@ -0,0 +1,115 @@ +/* crypto/evp/p_seal.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> +#ifndef OPENSSL_NO_RSA +#include <openssl/rsa.h> +#endif +#include <openssl/evp.h> +#include <openssl/objects.h> +#include <openssl/x509.h> + +int EVP_SealInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type, unsigned char **ek, + int *ekl, unsigned char *iv, EVP_PKEY **pubk, int npubk) + { + unsigned char key[EVP_MAX_KEY_LENGTH]; + int i; + + if(type) { + EVP_CIPHER_CTX_init(ctx); + if(!EVP_EncryptInit_ex(ctx,type,NULL,NULL,NULL)) return 0; + } + if ((npubk <= 0) || !pubk) + return 1; + if (EVP_CIPHER_CTX_rand_key(ctx, key) <= 0) + return 0; + if (EVP_CIPHER_CTX_iv_length(ctx)) + RAND_pseudo_bytes(iv,EVP_CIPHER_CTX_iv_length(ctx)); + + if(!EVP_EncryptInit_ex(ctx,NULL,NULL,key,iv)) return 0; + + for (i=0; i<npubk; i++) + { + ekl[i]=EVP_PKEY_encrypt_old(ek[i],key,EVP_CIPHER_CTX_key_length(ctx), + pubk[i]); + if (ekl[i] <= 0) return(-1); + } + return(npubk); + } + +/* MACRO +void EVP_SealUpdate(ctx,out,outl,in,inl) +EVP_CIPHER_CTX *ctx; +unsigned char *out; +int *outl; +unsigned char *in; +int inl; + { + EVP_EncryptUpdate(ctx,out,outl,in,inl); + } +*/ + +int EVP_SealFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) + { + int i; + i = EVP_EncryptFinal_ex(ctx,out,outl); + EVP_EncryptInit_ex(ctx,NULL,NULL,NULL,NULL); + return i; + } |