evp_enc.c revision 43c12e3d4f9bbbbd4a8ba7b149686437514bc6b6
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 67656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include "evp_locl.h" 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 69e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modaduguconst char EVP_version[]="EVP" OPENSSL_VERSION_PTEXT; 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 71221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromvoid EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx) 72221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 73221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom memset(ctx,0,sizeof(EVP_CIPHER_CTX)); 74221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* ctx->cipher=NULL; */ 75221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 76221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectEVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void) 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVP_CIPHER_CTX *ctx=OPENSSL_malloc(sizeof *ctx); 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx) 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVP_CIPHER_CTX_init(ctx); 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return ctx; 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *key, const unsigned char *iv, int enc) 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (cipher) 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVP_CIPHER_CTX_init(ctx); 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CipherInit_ex(ctx,cipher,NULL,key,iv,enc); 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 93221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromint EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl, 94221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom const unsigned char *key, const unsigned char *iv, int enc) 95221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 96221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (enc == -1) 97221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom enc = ctx->encrypt; 98221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom else 99221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 100221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (enc) 101221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom enc = 1; 102221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->encrypt = enc; 103221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 104221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifndef OPENSSL_NO_ENGINE 105221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Whether it's nice or not, "Inits" can be used on "Final"'d contexts 106221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * so this context may already have an ENGINE! Try to avoid releasing 107221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * the previous handle, re-querying for an ENGINE, and having a 108221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * reinitialisation, when it may all be unecessary. */ 109221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (ctx->engine && ctx->cipher && (!cipher || 110221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom (cipher && (cipher->nid == ctx->cipher->nid)))) 111221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom goto skip_to_init; 112221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 113221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (cipher) 114221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 115221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Ensure a context left lying around from last time is cleared 116221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * (the previous check attempted to avoid this if the same 117221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * ENGINE and EVP_CIPHER could be used). */ 118221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVP_CIPHER_CTX_cleanup(ctx); 119221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 120221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Restore encrypt field: it is zeroed by cleanup */ 121221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->encrypt = enc; 122221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifndef OPENSSL_NO_ENGINE 123221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(impl) 124221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 125221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (!ENGINE_init(impl)) 126221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 127221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); 128221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 129221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 130221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 131221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom else 132221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Ask if an ENGINE is reserved for this job */ 133221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom impl = ENGINE_get_cipher_engine(cipher->nid); 134221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(impl) 135221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 136221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* There's an ENGINE for this job ... (apparently) */ 137221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom const EVP_CIPHER *c = ENGINE_get_cipher(impl, cipher->nid); 138221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!c) 139221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 140221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* One positive side-effect of US's export 141221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * control history, is that we should at least 142221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * be able to avoid using US mispellings of 143221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * "initialisation"? */ 144221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); 145221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 146221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 147221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* We'll use the ENGINE's private cipher definition */ 148221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom cipher = c; 149221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Store the ENGINE functional reference so we know 150221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * 'cipher' came from an ENGINE and we need to release 151221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * it when done. */ 152221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->engine = impl; 153221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 154221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom else 155221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->engine = NULL; 156221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 157221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 158221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->cipher=cipher; 159221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (ctx->cipher->ctx_size) 160221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 161221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->cipher_data=OPENSSL_malloc(ctx->cipher->ctx_size); 162221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (!ctx->cipher_data) 163221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 164221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHERINIT_EX, ERR_R_MALLOC_FAILURE); 165221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 166221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 167221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 168221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom else 169221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 170221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->cipher_data = NULL; 171221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 172221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->key_len = cipher->key_len; 173221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->flags = 0; 174221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(ctx->cipher->flags & EVP_CIPH_CTRL_INIT) 175221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 176221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) 177221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 178221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); 179221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 180221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 181221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 182221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 183221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom else if(!ctx->cipher) 184221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 185221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_NO_CIPHER_SET); 186221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 187221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 188221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifndef OPENSSL_NO_ENGINE 189221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromskip_to_init: 190221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 191221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* we assume block size is a power of 2 in *cryptUpdate */ 192221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom OPENSSL_assert(ctx->cipher->block_size == 1 193221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom || ctx->cipher->block_size == 8 194221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom || ctx->cipher->block_size == 16); 195221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 196221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) { 197221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom switch(EVP_CIPHER_CTX_mode(ctx)) { 198221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 199221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom case EVP_CIPH_STREAM_CIPHER: 200221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom case EVP_CIPH_ECB_MODE: 201221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom break; 202221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 203221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom case EVP_CIPH_CFB_MODE: 204221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom case EVP_CIPH_OFB_MODE: 205221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 206221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->num = 0; 20743c12e3d4f9bbbbd4a8ba7b149686437514bc6b6Brian Carlstrom /* fall-through */ 208221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 209221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom case EVP_CIPH_CBC_MODE: 210221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 211221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom OPENSSL_assert(EVP_CIPHER_CTX_iv_length(ctx) <= 212221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom (int)sizeof(ctx->iv)); 213221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(iv) memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx)); 214221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx)); 215221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom break; 216221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 217221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom default: 218221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 219221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom break; 220221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 221221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 222221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 223221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) { 224221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!ctx->cipher->init(ctx,key,iv,enc)) return 0; 225221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 226221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->buf_len=0; 227221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->final_used=0; 228221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ctx->block_mask=ctx->cipher->block_size-1; 229221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 1; 230221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 231221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 232656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, 233656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *in, int inl) 234656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 235656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->encrypt) 236656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_EncryptUpdate(ctx,out,outl,in,inl); 237656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else return EVP_DecryptUpdate(ctx,out,outl,in,inl); 238656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 239656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 240656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 241656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 242656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->encrypt) 243656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_EncryptFinal_ex(ctx,out,outl); 244656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else return EVP_DecryptFinal_ex(ctx,out,outl); 245656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 246656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 247656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 248656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 249656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->encrypt) 250656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_EncryptFinal(ctx,out,outl); 251656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else return EVP_DecryptFinal(ctx,out,outl); 252656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 253656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 254656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, 255656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *key, const unsigned char *iv) 256656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 257656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CipherInit(ctx, cipher, key, iv, 1); 258656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 259656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 260656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx,const EVP_CIPHER *cipher, ENGINE *impl, 261656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *key, const unsigned char *iv) 262656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 263656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1); 264656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 265656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 266656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, 267656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *key, const unsigned char *iv) 268656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 269656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CipherInit(ctx, cipher, key, iv, 0); 270656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 271656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 272656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl, 273656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *key, const unsigned char *iv) 274656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 275656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0); 276656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 277656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 278656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, 279656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *in, int inl) 280656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 281656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int i,j,bl; 282656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 283e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu if (inl <= 0) 284e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 285e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu *outl = 0; 286e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu return inl == 0; 287e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 288e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 289656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(ctx->buf_len == 0 && (inl&(ctx->block_mask)) == 0) 290656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 291221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(ctx->cipher->do_cipher(ctx,out,in,inl)) 292656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 293656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=inl; 294656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 295656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 296656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 297656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 298656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=0; 299656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 300656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 301656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 302656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=ctx->buf_len; 303656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project bl=ctx->cipher->block_size; 304656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_assert(bl <= (int)sizeof(ctx->buf)); 305656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i != 0) 306656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 307656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i+inl < bl) 308656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 309656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(&(ctx->buf[i]),in,inl); 310656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->buf_len+=inl; 311656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=0; 312656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 313656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 314656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 315656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 316656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project j=bl-i; 317656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(&(ctx->buf[i]),in,j); 318221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!ctx->cipher->do_cipher(ctx,out,ctx->buf,bl)) return 0; 319656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project inl-=j; 320656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project in+=j; 321656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project out+=bl; 322656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=bl; 323656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 324656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 325656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 326656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl = 0; 327656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=inl&(bl-1); 328656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project inl-=i; 329656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (inl > 0) 330656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 331221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!ctx->cipher->do_cipher(ctx,out,in,inl)) return 0; 332656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl+=inl; 333656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 334656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 335656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i != 0) 336656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(ctx->buf,&(in[inl]),i); 337656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->buf_len=i; 338656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 339656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 340656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 341656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 342656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 343656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int ret; 344656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret = EVP_EncryptFinal_ex(ctx, out, outl); 345656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return ret; 346656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 347656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 348656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 349656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 350656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int n,ret; 351656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int i, b, bl; 352656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 353656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project b=ctx->cipher->block_size; 354656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_assert(b <= sizeof ctx->buf); 355656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (b == 1) 356656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 357656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=0; 358656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 359656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 360656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project bl=ctx->buf_len; 361656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->flags & EVP_CIPH_NO_PADDING) 362656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 363656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(bl) 364656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 365656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH); 366656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 367656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 368656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl = 0; 369656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 370656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 371656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 372656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project n=b-bl; 373656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (i=bl; i<b; i++) 374656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->buf[i]=n; 375221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ret=ctx->cipher->do_cipher(ctx,out,ctx->buf,b); 376656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 377656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 378656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(ret) 379656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=b; 380656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 381656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return ret; 382656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 383656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 384656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, 385656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const unsigned char *in, int inl) 386656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 387656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int fix_len; 388656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int b; 389656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 390e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu if (inl <= 0) 391656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 392e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu *outl = 0; 393e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu return inl == 0; 394656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 395656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 396656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->flags & EVP_CIPH_NO_PADDING) 397656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_EncryptUpdate(ctx, out, outl, in, inl); 398656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 399656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project b=ctx->cipher->block_size; 400656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_assert(b <= sizeof ctx->final); 401656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 402656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(ctx->final_used) 403656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 404656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(out,ctx->final,b); 405656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project out+=b; 406656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fix_len = 1; 407656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 408656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 409656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fix_len = 0; 410656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 411656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 412656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(!EVP_EncryptUpdate(ctx,out,outl,in,inl)) 413656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 414656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 415656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* if we have 'decrypted' a multiple of block size, make sure 416656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * we have a copy of this last block */ 417656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (b > 1 && !ctx->buf_len) 418656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 419656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl-=b; 420656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->final_used=1; 421656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project memcpy(ctx->final,&out[*outl],b); 422656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 423656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 424656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ctx->final_used = 0; 425656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 426656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (fix_len) 427656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl += b; 428656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 429656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 430656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 431656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 432656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 433656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 434656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int ret; 435656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret = EVP_DecryptFinal_ex(ctx, out, outl); 436656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return ret; 437656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 438656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 439656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) 440656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 441656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int i,n; 442656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned int b; 443656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 444656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=0; 445656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project b=ctx->cipher->block_size; 446656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->flags & EVP_CIPH_NO_PADDING) 447656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 448656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(ctx->buf_len) 449656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 450656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH); 451656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 452656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 453656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl = 0; 454656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 455656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 456656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (b > 1) 457656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 458656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->buf_len || !ctx->final_used) 459656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 460656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_WRONG_FINAL_BLOCK_LENGTH); 461656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(0); 462656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 463656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_assert(b <= sizeof ctx->final); 464656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project n=ctx->final[b-1]; 465656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (n == 0 || n > (int)b) 466656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 467656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_BAD_DECRYPT); 468656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(0); 469656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 470656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (i=0; i<n; i++) 471656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 472656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->final[--b] != n) 473656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 474656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,EVP_R_BAD_DECRYPT); 475656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(0); 476656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 477656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 478656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project n=ctx->cipher->block_size-n; 479656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project for (i=0; i<n; i++) 480656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project out[i]=ctx->final[i]; 481656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=n; 482656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 483656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 484656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project *outl=0; 485656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(1); 486656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 487656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 488656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectvoid EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx) 489656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 490656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx) 491656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 492656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVP_CIPHER_CTX_cleanup(ctx); 493656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_free(ctx); 494656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 495656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 496656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 497221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromint EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c) 498221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 499221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (c->cipher != NULL) 500221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 501221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(c->cipher->cleanup && !c->cipher->cleanup(c)) 502221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 503221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Cleanse cipher context data */ 504221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (c->cipher_data) 505221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom OPENSSL_cleanse(c->cipher_data, c->cipher->ctx_size); 506221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 507221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (c->cipher_data) 508221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom OPENSSL_free(c->cipher_data); 509221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifndef OPENSSL_NO_ENGINE 510221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (c->engine) 511221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* The EVP_CIPHER we used belongs to an ENGINE, release the 512221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * functional reference we held for this reason. */ 513221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ENGINE_finish(c->engine); 514221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 515221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom memset(c,0,sizeof(EVP_CIPHER_CTX)); 516221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 1; 517221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 518221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 519656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen) 520656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 521656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH) 522656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_KEY_LENGTH, keylen, NULL); 523656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(c->key_len == keylen) return 1; 524656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if((keylen > 0) && (c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) 525656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 526656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project c->key_len = keylen; 527656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 528656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 529656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project EVPerr(EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH,EVP_R_INVALID_KEY_LENGTH); 530656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 531656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 532656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 533656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad) 534656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 535656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (pad) ctx->flags &= ~EVP_CIPH_NO_PADDING; 536656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else ctx->flags |= EVP_CIPH_NO_PADDING; 537656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 538656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 539656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 540221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromint EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr) 541221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom{ 542221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom int ret; 543221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!ctx->cipher) { 544221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_NO_CIPHER_SET); 545221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 546221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 547221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 548221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(!ctx->cipher->ctrl) { 549221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_NOT_IMPLEMENTED); 550221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 551221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 552221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 553221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ret = ctx->cipher->ctrl(ctx, type, arg, ptr); 554221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if(ret == -1) { 555221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED); 556221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 557221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 558221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return ret; 559221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom} 560221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 561656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key) 562656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 563656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ctx->cipher->flags & EVP_CIPH_RAND_KEY) 564656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_RAND_KEY, 0, key); 565656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (RAND_bytes(key, ctx->key_len) <= 0) 566656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 0; 567656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 568656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 569656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 570221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromint EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in) 571e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 572221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if ((in == NULL) || (in->cipher == NULL)) 573e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 574221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_COPY,EVP_R_INPUT_NOT_INITIALIZED); 575221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 576e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 577221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifndef OPENSSL_NO_ENGINE 578221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom /* Make sure it's safe to copy a cipher context using an ENGINE */ 579221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (in->engine && !ENGINE_init(in->engine)) 580221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 581221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_COPY,ERR_R_ENGINE_LIB); 582221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 583221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 584221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 585221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 586221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVP_CIPHER_CTX_cleanup(out); 587221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom memcpy(out,in,sizeof *out); 588221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 589221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (in->cipher_data && in->cipher->ctx_size) 590e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 591221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom out->cipher_data=OPENSSL_malloc(in->cipher->ctx_size); 592221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (!out->cipher_data) 593e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 594221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVPerr(EVP_F_EVP_CIPHER_CTX_COPY,ERR_R_MALLOC_FAILURE); 595e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu return 0; 596e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 597221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom memcpy(out->cipher_data,in->cipher_data,in->cipher->ctx_size); 598e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 599e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 600221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY) 601221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out); 602221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 1; 603e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 604e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 605