1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* crypto/evp/evp_enc.c */ 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * All rights reserved. 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This package is an SSL implementation written 6656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * by Eric Young (eay@cryptsoft.com). 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The implementation was written so as to conform with Netscapes SSL. 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This library is free for commercial and non-commercial use as long as 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the following conditions are aheared to. The following conditions 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * apply to all code found in this distribution, be it the RC4, RSA, 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * included with this distribution is covered by the same copyright terms 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Copyright remains Eric Young's, and as such any Copyright notices in 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the code are not to be removed. 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * If this package is used in a product, Eric Young should be given attribution 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * as the author of the parts of the library used. 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This can be in the form of a textual message at program startup or 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * in documentation (online or textual) provided with the package. 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Redistribution and use in source and binary forms, with or without 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * modification, are permitted provided that the following conditions 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * are met: 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 1. Redistributions of source code must retain the copyright 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer. 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer in the 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * documentation and/or other materials provided with the distribution. 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 3. All advertising materials mentioning features or use of this software 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * must display the following acknowledgement: 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes cryptographic software written by 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Eric Young (eay@cryptsoft.com)" 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The word 'cryptographic' can be left out if the rouines from the library 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * being used are not cryptographic related :-). 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 4. If you include any Windows specific code (or a derivative thereof) from 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the apps directory (application code) you must include an acknowledgement: 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * SUCH DAMAGE. 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The licence and distribution terms for any publically available version or 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * derivative of this code cannot be changed. i.e. this code cannot simply be 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * copied and put under another distribution licence 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * [including the GNU Public Licence.] 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdio.h> 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include "cryptlib.h" 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/evp.h> 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/err.h> 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/rand.h> 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef OPENSSL_NO_ENGINE 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/engine.h> 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 67392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#ifdef OPENSSL_FIPS 68392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#include <openssl/fips.h> 69392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#endif 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include "evp_locl.h" 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 72392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#ifdef OPENSSL_FIPS 73392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#define M_do_cipher(ctx, out, in, inl) FIPS_cipher(ctx, out, in, inl) 74392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#else 75392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#define M_do_cipher(ctx, out, in, inl) ctx->cipher->do_cipher(ctx, out, in, inl) 76392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#endif 77392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 78392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 79e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modaduguconst char EVP_version[]="EVP" OPENSSL_VERSION_PTEXT; 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 81221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromvoid EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx) 82221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 83221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom memset(ctx,0,sizeof(EVP_CIPHER_CTX)); 84221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* ctx->cipher=NULL; */ 85221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 86221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectEVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void) 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVP_CIPHER_CTX *ctx=OPENSSL_malloc(sizeof *ctx); 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx) 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVP_CIPHER_CTX_init(ctx); 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return ctx; 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *key, const unsigned char *iv, int enc) 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (cipher) 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVP_CIPHER_CTX_init(ctx); 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CipherInit_ex(ctx,cipher,NULL,key,iv,enc); 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 103221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromint EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl, 104221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom const unsigned char *key, const unsigned char *iv, int enc) 105221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 106221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (enc == -1) 107221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom enc = ctx->encrypt; 108221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom else 109221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 110221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (enc) 111221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom enc = 1; 112221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->encrypt = enc; 113221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 114221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifndef OPENSSL_NO_ENGINE 115221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Whether it's nice or not, "Inits" can be used on "Final"'d contexts 116221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * so this context may already have an ENGINE! Try to avoid releasing 117221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * the previous handle, re-querying for an ENGINE, and having a 118221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * reinitialisation, when it may all be unecessary. */ 119221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (ctx->engine && ctx->cipher && (!cipher || 120221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom (cipher && (cipher->nid == ctx->cipher->nid)))) 121221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom goto skip_to_init; 122221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 123221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (cipher) 124221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 125221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Ensure a context left lying around from last time is cleared 126221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * (the previous check attempted to avoid this if the same 127221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * ENGINE and EVP_CIPHER could be used). */ 128392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (ctx->cipher) 129392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 130392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom unsigned long flags = ctx->flags; 131392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom EVP_CIPHER_CTX_cleanup(ctx); 132392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom /* Restore encrypt and flags */ 133392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom ctx->encrypt = enc; 134392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom ctx->flags = flags; 135392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 136221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifndef OPENSSL_NO_ENGINE 137221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(impl) 138221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 139221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (!ENGINE_init(impl)) 140221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 141221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); 142221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 143221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 144221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 145221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom else 146221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Ask if an ENGINE is reserved for this job */ 147221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom impl = ENGINE_get_cipher_engine(cipher->nid); 148221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(impl) 149221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 150221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* There's an ENGINE for this job ... (apparently) */ 151221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom const EVP_CIPHER *c = ENGINE_get_cipher(impl, cipher->nid); 152221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!c) 153221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 154221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* One positive side-effect of US's export 155221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * control history, is that we should at least 156221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * be able to avoid using US mispellings of 157221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * "initialisation"? */ 158221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); 159221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 160221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 161221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* We'll use the ENGINE's private cipher definition */ 162221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom cipher = c; 163221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Store the ENGINE functional reference so we know 164221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * 'cipher' came from an ENGINE and we need to release 165221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * it when done. */ 166221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->engine = impl; 167221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 168221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom else 169221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->engine = NULL; 170221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 171221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 172392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#ifdef OPENSSL_FIPS 173a1a5710c055e139ea00e785f9eb55b3af3e4dab1Brian Carlstrom if (FIPS_mode()) 174a1a5710c055e139ea00e785f9eb55b3af3e4dab1Brian Carlstrom return FIPS_cipherinit(ctx, cipher, key, iv, enc); 175f42d491ab90c82302b0054c62014c1ee9b638affBrian Carlstrom#endif 176221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->cipher=cipher; 177221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (ctx->cipher->ctx_size) 178221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 179221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->cipher_data=OPENSSL_malloc(ctx->cipher->ctx_size); 180221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (!ctx->cipher_data) 181221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 182221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHERINIT_EX, ERR_R_MALLOC_FAILURE); 183221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 184221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 185221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 186221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom else 187221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 188221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->cipher_data = NULL; 189221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 190221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->key_len = cipher->key_len; 191221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->flags = 0; 192221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(ctx->cipher->flags & EVP_CIPH_CTRL_INIT) 193221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 194221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) 195221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 196221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); 197221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 198221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 199221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 200221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 201221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom else if(!ctx->cipher) 202221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 203221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_NO_CIPHER_SET); 204221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 205221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 206221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifndef OPENSSL_NO_ENGINE 207221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromskip_to_init: 208221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 209392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#ifdef OPENSSL_FIPS 210a1a5710c055e139ea00e785f9eb55b3af3e4dab1Brian Carlstrom if (FIPS_mode()) 211a1a5710c055e139ea00e785f9eb55b3af3e4dab1Brian Carlstrom return FIPS_cipherinit(ctx, cipher, key, iv, enc); 212f42d491ab90c82302b0054c62014c1ee9b638affBrian Carlstrom#endif 213221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* we assume block size is a power of 2 in *cryptUpdate */ 214221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom OPENSSL_assert(ctx->cipher->block_size == 1 215221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom || ctx->cipher->block_size == 8 216221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom || ctx->cipher->block_size == 16); 217221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 218221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) { 219221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom switch(EVP_CIPHER_CTX_mode(ctx)) { 220221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 221221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom case EVP_CIPH_STREAM_CIPHER: 222221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom case EVP_CIPH_ECB_MODE: 223221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom break; 224221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 225221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom case EVP_CIPH_CFB_MODE: 226221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom case EVP_CIPH_OFB_MODE: 227221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 228221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->num = 0; 22943c12e3d4f9bbbbd4a8ba7b149686437514bc6b6Brian Carlstrom /* fall-through */ 230221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 231221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom case EVP_CIPH_CBC_MODE: 232221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 233221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom OPENSSL_assert(EVP_CIPHER_CTX_iv_length(ctx) <= 234221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom (int)sizeof(ctx->iv)); 235221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(iv) memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx)); 236221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx)); 237221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom break; 238221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 239392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom case EVP_CIPH_CTR_MODE: 240392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom ctx->num = 0; 241392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom /* Don't reuse IV for CTR mode */ 242392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if(iv) 243392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom memcpy(ctx->iv, iv, EVP_CIPHER_CTX_iv_length(ctx)); 244392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom break; 245392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 246221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom default: 247221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 248221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom break; 249221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 250221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 251221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 252221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) { 253221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!ctx->cipher->init(ctx,key,iv,enc)) return 0; 254221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 255221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->buf_len=0; 256221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->final_used=0; 257221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->block_mask=ctx->cipher->block_size-1; 258221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 1; 259221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 260221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 261656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, 262656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *in, int inl) 263656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 264656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->encrypt) 265656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_EncryptUpdate(ctx,out,outl,in,inl); 266656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else return EVP_DecryptUpdate(ctx,out,outl,in,inl); 267656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 268656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 269656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 270656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 271656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->encrypt) 272656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_EncryptFinal_ex(ctx,out,outl); 273656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else return EVP_DecryptFinal_ex(ctx,out,outl); 274656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 275656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 276656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 277656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 278656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->encrypt) 279656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_EncryptFinal(ctx,out,outl); 280656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else return EVP_DecryptFinal(ctx,out,outl); 281656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 282656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 283656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, 284656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *key, const unsigned char *iv) 285656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 286656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CipherInit(ctx, cipher, key, iv, 1); 287656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 288656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 289656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx,const EVP_CIPHER *cipher, ENGINE *impl, 290656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *key, const unsigned char *iv) 291656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 292656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1); 293656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 294656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 295656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, 296656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *key, const unsigned char *iv) 297656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 298656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CipherInit(ctx, cipher, key, iv, 0); 299656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 300656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 301656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl, 302656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *key, const unsigned char *iv) 303656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 304656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0); 305656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 306656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 307656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, 308656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *in, int inl) 309656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 310656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int i,j,bl; 311656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 312392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) 313392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 314392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom i = M_do_cipher(ctx, out, in, inl); 315392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (i < 0) 316392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return 0; 317392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom else 318392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom *outl = i; 319392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return 1; 320392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 321392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 322e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu if (inl <= 0) 323e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 324e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu *outl = 0; 325e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu return inl == 0; 326e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 327e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 328656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(ctx->buf_len == 0 && (inl&(ctx->block_mask)) == 0) 329656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 330392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if(M_do_cipher(ctx,out,in,inl)) 331656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 332656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=inl; 333656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 334656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 335656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 336656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 337656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=0; 338656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 339656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 340656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 341656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=ctx->buf_len; 342656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project bl=ctx->cipher->block_size; 343656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_assert(bl <= (int)sizeof(ctx->buf)); 344656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i != 0) 345656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 346656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i+inl < bl) 347656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 348656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(&(ctx->buf[i]),in,inl); 349656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->buf_len+=inl; 350656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=0; 351656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 352656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 353656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 354656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 355656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project j=bl-i; 356656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(&(ctx->buf[i]),in,j); 357392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if(!M_do_cipher(ctx,out,ctx->buf,bl)) return 0; 358656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project inl-=j; 359656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project in+=j; 360656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project out+=bl; 361656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=bl; 362656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 363656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 364656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 365656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl = 0; 366656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=inl&(bl-1); 367656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project inl-=i; 368656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (inl > 0) 369656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 370392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if(!M_do_cipher(ctx,out,in,inl)) return 0; 371656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl+=inl; 372656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 373656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 374656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i != 0) 375656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(ctx->buf,&(in[inl]),i); 376656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->buf_len=i; 377656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 378656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 379656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 380656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 381656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 382656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int ret; 383656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret = EVP_EncryptFinal_ex(ctx, out, outl); 384656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return ret; 385656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 386656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 387656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 388656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 389656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int n,ret; 390656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int i, b, bl; 391656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 392392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) 393392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 394392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom ret = M_do_cipher(ctx, out, NULL, 0); 395392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (ret < 0) 396392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return 0; 397392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom else 398392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom *outl = ret; 399392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return 1; 400392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 401392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 402656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project b=ctx->cipher->block_size; 403656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_assert(b <= sizeof ctx->buf); 404656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (b == 1) 405656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 406656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=0; 407656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 408656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 409656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project bl=ctx->buf_len; 410656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->flags & EVP_CIPH_NO_PADDING) 411656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 412656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(bl) 413656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 414656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH); 415656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 416656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 417656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl = 0; 418656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 419656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 420656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 421656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project n=b-bl; 422656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (i=bl; i<b; i++) 423656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->buf[i]=n; 424392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom ret=M_do_cipher(ctx,out,ctx->buf,b); 425656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 426656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 427656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(ret) 428656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=b; 429656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 430656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return ret; 431656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 432656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 433656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, 434656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *in, int inl) 435656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 436656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int fix_len; 437656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int b; 438656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 439392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) 440392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 441392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom fix_len = M_do_cipher(ctx, out, in, inl); 442392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (fix_len < 0) 443392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 444392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom *outl = 0; 445392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return 0; 446392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 447392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom else 448392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom *outl = fix_len; 449392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return 1; 450392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 451392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 452e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu if (inl <= 0) 453656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 454e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu *outl = 0; 455e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu return inl == 0; 456656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 457656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 458656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->flags & EVP_CIPH_NO_PADDING) 459656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_EncryptUpdate(ctx, out, outl, in, inl); 460656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 461656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project b=ctx->cipher->block_size; 462656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_assert(b <= sizeof ctx->final); 463656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 464656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(ctx->final_used) 465656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 466656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(out,ctx->final,b); 467656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project out+=b; 468656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fix_len = 1; 469656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 470656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 471656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fix_len = 0; 472656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 473656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 474656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(!EVP_EncryptUpdate(ctx,out,outl,in,inl)) 475656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 476656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 477656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* if we have 'decrypted' a multiple of block size, make sure 478656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * we have a copy of this last block */ 479656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (b > 1 && !ctx->buf_len) 480656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 481656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl-=b; 482656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->final_used=1; 483656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(ctx->final,&out[*outl],b); 484656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 485656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 486656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->final_used = 0; 487656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 488656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (fix_len) 489656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl += b; 490656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 491656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 492656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 493656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 494656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 495656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 496656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int ret; 497656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret = EVP_DecryptFinal_ex(ctx, out, outl); 498656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return ret; 499656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 500656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 501656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 502656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 503656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int i,n; 504656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int b; 505656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=0; 506392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 507392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) 508392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom { 509392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom i = M_do_cipher(ctx, out, NULL, 0); 510392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom if (i < 0) 511392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return 0; 512392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom else 513392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom *outl = i; 514392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom return 1; 515392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom } 516392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 517656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project b=ctx->cipher->block_size; 518656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->flags & EVP_CIPH_NO_PADDING) 519656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 520656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(ctx->buf_len) 521656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 522656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH); 523656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 524656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 525656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl = 0; 526656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 527656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 528656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (b > 1) 529656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 530656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->buf_len || !ctx->final_used) 531656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 532656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_WRONG_FINAL_BLOCK_LENGTH); 533656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(0); 534656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 535656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_assert(b <= sizeof ctx->final); 536656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project n=ctx->final[b-1]; 537656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (n == 0 || n > (int)b) 538656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 539656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_BAD_DECRYPT); 540656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(0); 541656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 542656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (i=0; i<n; i++) 543656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 544656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->final[--b] != n) 545656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 546656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_BAD_DECRYPT); 547656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(0); 548656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 549656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 550656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project n=ctx->cipher->block_size-n; 551656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (i=0; i<n; i++) 552656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project out[i]=ctx->final[i]; 553656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=n; 554656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 555656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 556656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=0; 557656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(1); 558656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 559656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 560656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectvoid EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx) 561656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 562656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx) 563656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 564656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVP_CIPHER_CTX_cleanup(ctx); 565656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_free(ctx); 566656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 567656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 568656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 569221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromint EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c) 570221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 571392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#ifndef OPENSSL_FIPS 572221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (c->cipher != NULL) 573221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 574221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(c->cipher->cleanup && !c->cipher->cleanup(c)) 575221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 576221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Cleanse cipher context data */ 577221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (c->cipher_data) 578221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom OPENSSL_cleanse(c->cipher_data, c->cipher->ctx_size); 579221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 580221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (c->cipher_data) 581221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom OPENSSL_free(c->cipher_data); 582392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#endif 583221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifndef OPENSSL_NO_ENGINE 584221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (c->engine) 585221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* The EVP_CIPHER we used belongs to an ENGINE, release the 586221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * functional reference we held for this reason. */ 587221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ENGINE_finish(c->engine); 588221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 589392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#ifdef OPENSSL_FIPS 590392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom FIPS_cipher_ctx_cleanup(c); 591392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom#endif 592221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom memset(c,0,sizeof(EVP_CIPHER_CTX)); 593221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 1; 594221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 595221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 596656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen) 597656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 598656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH) 599656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_KEY_LENGTH, keylen, NULL); 600656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(c->key_len == keylen) return 1; 601656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if((keylen > 0) && (c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) 602656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 603656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c->key_len = keylen; 604656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 605656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 606656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH,EVP_R_INVALID_KEY_LENGTH); 607656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 608656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 609656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 610656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad) 611656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 612656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (pad) ctx->flags &= ~EVP_CIPH_NO_PADDING; 613656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else ctx->flags |= EVP_CIPH_NO_PADDING; 614656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 615656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 616656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 617221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromint EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr) 618221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom{ 619221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom int ret; 620221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!ctx->cipher) { 621221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_NO_CIPHER_SET); 622221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 623221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 624221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 625221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!ctx->cipher->ctrl) { 626221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_NOT_IMPLEMENTED); 627221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 628221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 629221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 630221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ret = ctx->cipher->ctrl(ctx, type, arg, ptr); 631221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(ret == -1) { 632221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED); 633221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 634221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 635221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return ret; 636221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom} 637221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 638656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key) 639656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 640656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->cipher->flags & EVP_CIPH_RAND_KEY) 641656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_RAND_KEY, 0, key); 642656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (RAND_bytes(key, ctx->key_len) <= 0) 643656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 644656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 645656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 646656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 647221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromint EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in) 648e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 649221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if ((in == NULL) || (in->cipher == NULL)) 650e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 651221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_COPY,EVP_R_INPUT_NOT_INITIALIZED); 652221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 653e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 654221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifndef OPENSSL_NO_ENGINE 655221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Make sure it's safe to copy a cipher context using an ENGINE */ 656221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (in->engine && !ENGINE_init(in->engine)) 657221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 658221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_COPY,ERR_R_ENGINE_LIB); 659221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 660221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 661221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 662221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 663221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVP_CIPHER_CTX_cleanup(out); 664221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom memcpy(out,in,sizeof *out); 665221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 666221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (in->cipher_data && in->cipher->ctx_size) 667e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 668221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom out->cipher_data=OPENSSL_malloc(in->cipher->ctx_size); 669221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (!out->cipher_data) 670e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 671221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_COPY,ERR_R_MALLOC_FAILURE); 672e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu return 0; 673e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 674221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom memcpy(out->cipher_data,in->cipher_data,in->cipher->ctx_size); 675e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 676e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 677221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY) 678221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out); 679221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 1; 680e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 681e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 682