X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=pppd%2Fpppcrypt.c;fp=pppd%2Fpppcrypt.c;h=0000000000000000000000000000000000000000;hp=cc4f5f7b5740c01d87b3a7ce966e57cc09a34bcf;hb=ba7f7e053daae846a54a1d08d3d133a5f1266ace;hpb=76016e1b948b7d9675b4e0750d1f943d96d9523b diff --git a/pppd/pppcrypt.c b/pppd/pppcrypt.c deleted file mode 100644 index cc4f5f7..0000000 --- a/pppd/pppcrypt.c +++ /dev/null @@ -1,280 +0,0 @@ -/* - * pppcrypt.c - PPP/DES linkage for MS-CHAP and EAP SRP-SHA1 - * - * Extracted from chap_ms.c by James Carlson. - * - * Copyright (c) 1995 Eric Rosenquist. 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. The name(s) of the authors of this software must not be used to - * endorse or promote products derived from this software without - * prior written permission. - * - * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO - * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY - * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN - * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING - * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - * - * Sections of this code holds different copyright information. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include - -#include "pppcrypt.h" -#include "ppp-crypto.h" - - -/* - * DES_set_odd_parity function are imported from openssl 3.0 project with the - * follwoing license: - * - * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved. - * - * Licensed under the Apache License 2.0 (the "License"). You may not use - * this file except in compliance with the License. You can obtain a copy - * in the file LICENSE in the source distribution or at - * https://www.openssl.org/source/license.html - */ -typedef unsigned char DES_cblock[8]; -#define DES_KEY_SZ (sizeof(DES_cblock)) - -static const unsigned char odd_parity[256] = { - 1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14, 14, - 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31, - 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47, - 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62, - 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79, - 81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94, - 97, 97, 98, 98, 100, 100, 103, 103, 104, 104, 107, 107, 109, 109, 110, - 110, - 112, 112, 115, 115, 117, 117, 118, 118, 121, 121, 122, 122, 124, 124, 127, - 127, - 128, 128, 131, 131, 133, 133, 134, 134, 137, 137, 138, 138, 140, 140, 143, - 143, - 145, 145, 146, 146, 148, 148, 151, 151, 152, 152, 155, 155, 157, 157, 158, - 158, - 161, 161, 162, 162, 164, 164, 167, 167, 168, 168, 171, 171, 173, 173, 174, - 174, - 176, 176, 179, 179, 181, 181, 182, 182, 185, 185, 186, 186, 188, 188, 191, - 191, - 193, 193, 194, 194, 196, 196, 199, 199, 200, 200, 203, 203, 205, 205, 206, - 206, - 208, 208, 211, 211, 213, 213, 214, 214, 217, 217, 218, 218, 220, 220, 223, - 223, - 224, 224, 227, 227, 229, 229, 230, 230, 233, 233, 234, 234, 236, 236, 239, - 239, - 241, 241, 242, 242, 244, 244, 247, 247, 248, 248, 251, 251, 253, 253, 254, - 254 -}; - -static void DES_set_odd_parity(DES_cblock *key) -{ - unsigned int i; - for (i = 0; i < DES_KEY_SZ; i++) - (*key)[i] = odd_parity[(*key)[i]]; -} - -static unsigned char -Get7Bits(const unsigned char *input, int startBit) -{ - unsigned int word; - - word = (unsigned)input[startBit / 8] << 8; - word |= (unsigned)input[startBit / 8 + 1]; - - word >>= 15 - (startBit % 8 + 7); - - return word & 0xFE; -} - -static void -MakeKey(const unsigned char *key, unsigned char *des_key) -{ - /* key IN 56 bit DES key missing parity bits */ - /* des_key OUT 64 bit DES key with parity bits added */ - des_key[0] = Get7Bits(key, 0); - des_key[1] = Get7Bits(key, 7); - des_key[2] = Get7Bits(key, 14); - des_key[3] = Get7Bits(key, 21); - des_key[4] = Get7Bits(key, 28); - des_key[5] = Get7Bits(key, 35); - des_key[6] = Get7Bits(key, 42); - des_key[7] = Get7Bits(key, 49); - - DES_set_odd_parity((DES_cblock *)des_key); -} - -#include - -int -DesEncrypt(unsigned char *clear, unsigned char *key, unsigned char *cipher) -{ - int retval = 0; - unsigned int clen = 0; - unsigned char des_key[8]; - - PPP_CIPHER_CTX *ctx = PPP_CIPHER_CTX_new(); - if (ctx) { - - MakeKey(key, des_key); - - if (PPP_CipherInit(ctx, PPP_des_ecb(), des_key, NULL, 1)) { - - if (PPP_CipherUpdate(ctx, cipher, &clen, clear, 8)) { - - if (PPP_CipherFinal(ctx, cipher + clen, &clen)) { - - retval = 1; - } - } - } - - PPP_CIPHER_CTX_free(ctx); - } - - return (retval); -} - -int -DesDecrypt(unsigned char *cipher, unsigned char *key, unsigned char *clear) -{ - int retval = 0; - unsigned int clen = 0; - unsigned char des_key[8]; - - PPP_CIPHER_CTX *ctx = PPP_CIPHER_CTX_new(); - if (ctx) { - - MakeKey(key, des_key); - - if (PPP_CipherInit(ctx, PPP_des_ecb(), des_key, NULL, 0)) { - - if (PPP_CipherUpdate(ctx, clear, &clen, cipher, 8)) { - - if (PPP_CipherFinal(ctx, clear + clen, &clen)) { - - retval = 1; - } - } - } - - PPP_CIPHER_CTX_free(ctx); - } - - return (retval); -} - -#ifdef UNIT_TEST_PPPCRYPT - -#include -#include - -/** - * The test-vectors are taken from RFC2759. - */ -int test_encrypt() -{ - unsigned char Challenge[8] = { - 0xD0, 0x2E, 0x43, 0x86, 0xBC, 0xE9, 0x12, 0x26 - }; - - unsigned char ZPasswordHash[21] = { - 0x44, 0xEB, 0xBA, 0x8D, 0x53, 0x12, 0xB8, 0xD6, - 0x11, 0x47, 0x44, 0x11, 0xF5, 0x69, 0x89, 0xAE - }; - - unsigned char expected[24] = { - 0x82, 0x30, 0x9E, 0xCD, 0x8D, 0x70, 0x8B, 0x5E, - 0xA0, 0x8F, 0xAA, 0x39, 0x81, 0xCD, 0x83, 0x54, - 0x42, 0x33, 0x11, 0x4A, 0x3D, 0x85, 0xD6, 0xDF - }; - unsigned char response[24] = {}; - unsigned int retval = 0; - - DesEncrypt(Challenge, ZPasswordHash + 0, response + 0); - DesEncrypt(Challenge, ZPasswordHash + 7, response + 8); - DesEncrypt(Challenge, ZPasswordHash + 14, response + 16); - - return memcmp(response, expected, sizeof(response)) == 0; -} - -int test_decrypt() -{ - unsigned char Challenge[8] = { - 0xD0, 0x2E, 0x43, 0x86, 0xBC, 0xE9, 0x12, 0x26 - }; - - unsigned char ZPasswordHash[21] = { - 0x44, 0xEB, 0xBA, 0x8D, 0x53, 0x12, 0xB8, 0xD6, - 0x11, 0x47, 0x44, 0x11, 0xF5, 0x69, 0x89, 0xAE - }; - - unsigned char Response[24] = { - 0x82, 0x30, 0x9E, 0xCD, 0x8D, 0x70, 0x8B, 0x5E, - 0xA0, 0x8F, 0xAA, 0x39, 0x81, 0xCD, 0x83, 0x54, - 0x42, 0x33, 0x11, 0x4A, 0x3D, 0x85, 0xD6, 0xDF - }; - unsigned char Output[8]; - unsigned int failure = 0; - - if (DesDecrypt(Response + 0, ZPasswordHash + 0, Output)) { - failure += memcmp(Challenge, Output, sizeof(Challenge)); - } - - if (DesDecrypt(Response + 8, ZPasswordHash + 7, Output)) { - failure += memcmp(Challenge, Output, sizeof(Challenge)); - } - - if (DesDecrypt(Response +16, ZPasswordHash +14, Output)) { - failure += memcmp(Challenge, Output, sizeof(Challenge)); - } - - return failure == 0; -} - -int main(int argc, char *argv[]) -{ - int failure = 0; - - if (!PPP_crypto_init()) { - printf("Couldn't initialize crypto test\n"); - return -1; - } - - if (!test_encrypt()) { - printf("CHAP DES encryption test failed\n"); - failure++; - } - - if (!test_decrypt()) { - printf("CHAP DES decryption test failed\n"); - failure++; - } - - if (!PPP_crypto_deinit()) { - printf("Couldn't deinitialize crypto test\n"); - return -1; - } - - return failure; -} - -#endif