p_seal.c revision 55714
155714Skris/* crypto/evp/p_seal.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. 855714Skris * 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). 1555714Skris * 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. 2255714Skris * 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 :-). 3755714Skris * 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)" 4055714Skris * 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. 5255714Skris * 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#ifndef NO_RSA 6355714Skris#include <openssl/rsa.h> 6455714Skris#endif 6555714Skris#include <openssl/evp.h> 6655714Skris#include <openssl/objects.h> 6755714Skris#include <openssl/x509.h> 6855714Skris 6955714Skrisint EVP_SealInit(EVP_CIPHER_CTX *ctx, EVP_CIPHER *type, unsigned char **ek, 7055714Skris int *ekl, unsigned char *iv, EVP_PKEY **pubk, int npubk) 7155714Skris { 7255714Skris unsigned char key[EVP_MAX_KEY_LENGTH]; 7355714Skris int i; 7455714Skris 7555714Skris if (npubk <= 0) return(0); 7655714Skris RAND_bytes(key,EVP_MAX_KEY_LENGTH); 7755714Skris if (type->iv_len > 0) 7855714Skris RAND_bytes(iv,type->iv_len); 7955714Skris 8055714Skris EVP_CIPHER_CTX_init(ctx); 8155714Skris EVP_EncryptInit(ctx,type,key,iv); 8255714Skris 8355714Skris for (i=0; i<npubk; i++) 8455714Skris { 8555714Skris ekl[i]=EVP_PKEY_encrypt(ek[i],key,EVP_CIPHER_key_length(type), 8655714Skris pubk[i]); 8755714Skris if (ekl[i] <= 0) return(-1); 8855714Skris } 8955714Skris return(npubk); 9055714Skris } 9155714Skris 9255714Skris/* MACRO 9355714Skrisvoid EVP_SealUpdate(ctx,out,outl,in,inl) 9455714SkrisEVP_CIPHER_CTX *ctx; 9555714Skrisunsigned char *out; 9655714Skrisint *outl; 9755714Skrisunsigned char *in; 9855714Skrisint inl; 9955714Skris { 10055714Skris EVP_EncryptUpdate(ctx,out,outl,in,inl); 10155714Skris } 10255714Skris*/ 10355714Skris 10455714Skrisvoid EVP_SealFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 10555714Skris { 10655714Skris EVP_EncryptFinal(ctx,out,outl); 10755714Skris EVP_EncryptInit(ctx,NULL,NULL,NULL); 10855714Skris } 109