diff options
Diffstat (limited to 'protocols/WhatsApp/src/OpenSSL/p5_crpt2.c')
| -rw-r--r-- | protocols/WhatsApp/src/OpenSSL/p5_crpt2.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/protocols/WhatsApp/src/OpenSSL/p5_crpt2.c b/protocols/WhatsApp/src/OpenSSL/p5_crpt2.c new file mode 100644 index 0000000000..cc3b012ac0 --- /dev/null +++ b/protocols/WhatsApp/src/OpenSSL/p5_crpt2.c @@ -0,0 +1,112 @@ +/* p5_crpt2.c */ +/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL + * project 1999. + */ +/* ==================================================================== + * Copyright (c) 1999 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ +#include <stdio.h> +#include <stdlib.h> + +#include "evp.h" +#include "hmac.h" + +#define SHA_DIGEST_LENGTH 20 + +/* This is an implementation of PKCS#5 v2.0 password based encryption key + * derivation function PBKDF2 using the only currently defined function HMAC + * with SHA1. Verified against test vectors posted by Peter Gutmann + * <pgut001@cs.auckland.ac.nz> to the PKCS-TNG <pkcs-tng@rsa.com> mailing list. + */ + +int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen, + const unsigned char *salt, int saltlen, int iter, + int keylen, unsigned char *out) +{ + unsigned char digtmp[SHA_DIGEST_LENGTH], *p, itmp[4]; + int cplen, j, k, tkeylen; + unsigned long i = 1; + HMAC_CTX hctx; + + HMAC_CTX_init(&hctx); + p = out; + tkeylen = keylen; + if(!pass) passlen = 0; + else if(passlen == -1) passlen = strlen(pass); + while(tkeylen) { + if(tkeylen > SHA_DIGEST_LENGTH) cplen = SHA_DIGEST_LENGTH; + else cplen = tkeylen; + /* We are unlikely to ever use more than 256 blocks (5120 bits!) + * but just in case... + */ + itmp[0] = (unsigned char)((i >> 24) & 0xff); + itmp[1] = (unsigned char)((i >> 16) & 0xff); + itmp[2] = (unsigned char)((i >> 8) & 0xff); + itmp[3] = (unsigned char)(i & 0xff); + HMAC_Init_ex(&hctx, pass, passlen, EVP_sha1(), NULL); + HMAC_Update(&hctx, salt, saltlen); + HMAC_Update(&hctx, itmp, 4); + HMAC_Final(&hctx, digtmp, NULL); + memcpy(p, digtmp, cplen); + for(j = 1; j < iter; j++) { + HMAC(EVP_sha1(), pass, passlen, + digtmp, SHA_DIGEST_LENGTH, digtmp, NULL); + for(k = 0; k < cplen; k++) p[k] ^= digtmp[k]; + } + tkeylen-= cplen; + i++; + p+= cplen; + } + HMAC_CTX_cleanup(&hctx); + return 1; +} |