/* $OpenBSD: rc4_test.c,v 1.6 2022/11/09 12:10:17 joshua Exp $ */ /* * Copyright (c) 2022 Joshua Sing * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, 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. */ #include #include #include #include struct rc4_test { const uint8_t key[32]; const int key_len; const int len; const uint8_t in[512]; const uint8_t out[512]; }; static const struct rc4_test rc4_tests[] = { /* * Test vectors from RFC 6229, with 40 and 128-bit keys. * Note that this only uses the first 32 bytes of each test vector due * to stream offsets. */ { .key = { 0x01, 0x02, 0x03, 0x04, 0x05, }, .key_len = 5, .len = 32, .in = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }, .out = { 0xb2, 0x39, 0x63, 0x05, 0xf0, 0x3d, 0xc0, 0x27, 0xcc, 0xc3, 0x52, 0x4a, 0x0a, 0x11, 0x18, 0xa8, 0x69, 0x82, 0x94, 0x4f, 0x18, 0xfc, 0x82, 0xd5, 0x89, 0xc4, 0x03, 0xa4, 0x7a, 0x0d, 0x09, 0x19, }, }, { .key = { 0x83, 0x32, 0x22, 0x77, 0x2a, }, .key_len = 5, .len = 32, .in = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }, .out = { 0x80, 0xad, 0x97, 0xbd, 0xc9, 0x73, 0xdf, 0x8a, 0x2e, 0x87, 0x9e, 0x92, 0xa4, 0x97, 0xef, 0xda, 0x20, 0xf0, 0x60, 0xc2, 0xf2, 0xe5, 0x12, 0x65, 0x01, 0xd3, 0xd4, 0xfe, 0xa1, 0x0d, 0x5f, 0xc0, }, }, { .key = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, }, .key_len = 16, .len = 32, .in = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }, .out = { 0x9a, 0xc7, 0xcc, 0x9a, 0x60, 0x9d, 0x1e, 0xf7, 0xb2, 0x93, 0x28, 0x99, 0xcd, 0xe4, 0x1b, 0x97, 0x52, 0x48, 0xc4, 0x95, 0x90, 0x14, 0x12, 0x6a, 0x6e, 0x8a, 0x84, 0xf1, 0x1d, 0x1a, 0x9e, 0x1c, }, }, { .key = { 0xeb, 0xb4, 0x62, 0x27, 0xc6, 0xcc, 0x8b, 0x37, 0x64, 0x19, 0x10, 0x83, 0x32, 0x22, 0x77, 0x2a, }, .key_len = 16, .len = 32, .in = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }, .out = { 0x72, 0x0c, 0x94, 0xb6, 0x3e, 0xdf, 0x44, 0xe1, 0x31, 0xd9, 0x50, 0xca, 0x21, 0x1a, 0x5a, 0x30, 0xc3, 0x66, 0xfd, 0xea, 0xcf, 0x9c, 0xa8, 0x04, 0x36, 0xbe, 0x7c, 0x35, 0x84, 0x24, 0xd2, 0x0b, }, }, /* * Test vectors from the original cypherpunk posting of ARC4: * https://groups.google.com/group/sci.crypt/msg/10a300c9d21afca0?pli=1 */ { .key = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, }, .key_len = 8, .len = 8, .in = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, }, .out = { 0x75, 0xb7, 0x87, 0x80, 0x99, 0xe0, 0xc5, 0x96, }, }, { .key = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, }, .key_len = 8, .len = 8, .in = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }, .out = { 0x74, 0x94, 0xc2, 0xe7, 0x10, 0x4b, 0x08, 0x79, }, }, { .key = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }, .key_len = 8, .len = 8, .in = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }, .out = { 0xde, 0x18, 0x89, 0x41, 0xa3, 0x37, 0x5d, 0x3a, }, }, { .key = { 0xef, 0x01, 0x23, 0x45, }, .key_len = 4, .len = 10, .in = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }, .out = { 0xd6, 0xa1, 0x41, 0xa7, 0xec, 0x3c, 0x38, 0xdf, 0xbd, 0x61, }, }, { .key = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, }, .key_len = 8, .len = 512, .in = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, }, .out = { 0x75, 0x95, 0xc3, 0xe6, 0x11, 0x4a, 0x09, 0x78, 0x0c, 0x4a, 0xd4, 0x52, 0x33, 0x8e, 0x1f, 0xfd, 0x9a, 0x1b, 0xe9, 0x49, 0x8f, 0x81, 0x3d, 0x76, 0x53, 0x34, 0x49, 0xb6, 0x77, 0x8d, 0xca, 0xd8, 0xc7, 0x8a, 0x8d, 0x2b, 0xa9, 0xac, 0x66, 0x08, 0x5d, 0x0e, 0x53, 0xd5, 0x9c, 0x26, 0xc2, 0xd1, 0xc4, 0x90, 0xc1, 0xeb, 0xbe, 0x0c, 0xe6, 0x6d, 0x1b, 0x6b, 0x1b, 0x13, 0xb6, 0xb9, 0x19, 0xb8, 0x47, 0xc2, 0x5a, 0x91, 0x44, 0x7a, 0x95, 0xe7, 0x5e, 0x4e, 0xf1, 0x67, 0x79, 0xcd, 0xe8, 0xbf, 0x0a, 0x95, 0x85, 0x0e, 0x32, 0xaf, 0x96, 0x89, 0x44, 0x4f, 0xd3, 0x77, 0x10, 0x8f, 0x98, 0xfd, 0xcb, 0xd4, 0xe7, 0x26, 0x56, 0x75, 0x00, 0x99, 0x0b, 0xcc, 0x7e, 0x0c, 0xa3, 0xc4, 0xaa, 0xa3, 0x04, 0xa3, 0x87, 0xd2, 0x0f, 0x3b, 0x8f, 0xbb, 0xcd, 0x42, 0xa1, 0xbd, 0x31, 0x1d, 0x7a, 0x43, 0x03, 0xdd, 0xa5, 0xab, 0x07, 0x88, 0x96, 0xae, 0x80, 0xc1, 0x8b, 0x0a, 0xf6, 0x6d, 0xff, 0x31, 0x96, 0x16, 0xeb, 0x78, 0x4e, 0x49, 0x5a, 0xd2, 0xce, 0x90, 0xd7, 0xf7, 0x72, 0xa8, 0x17, 0x47, 0xb6, 0x5f, 0x62, 0x09, 0x3b, 0x1e, 0x0d, 0xb9, 0xe5, 0xba, 0x53, 0x2f, 0xaf, 0xec, 0x47, 0x50, 0x83, 0x23, 0xe6, 0x71, 0x32, 0x7d, 0xf9, 0x44, 0x44, 0x32, 0xcb, 0x73, 0x67, 0xce, 0xc8, 0x2f, 0x5d, 0x44, 0xc0, 0xd0, 0x0b, 0x67, 0xd6, 0x50, 0xa0, 0x75, 0xcd, 0x4b, 0x70, 0xde, 0xdd, 0x77, 0xeb, 0x9b, 0x10, 0x23, 0x1b, 0x6b, 0x5b, 0x74, 0x13, 0x47, 0x39, 0x6d, 0x62, 0x89, 0x74, 0x21, 0xd4, 0x3d, 0xf9, 0xb4, 0x2e, 0x44, 0x6e, 0x35, 0x8e, 0x9c, 0x11, 0xa9, 0xb2, 0x18, 0x4e, 0xcb, 0xef, 0x0c, 0xd8, 0xe7, 0xa8, 0x77, 0xef, 0x96, 0x8f, 0x13, 0x90, 0xec, 0x9b, 0x3d, 0x35, 0xa5, 0x58, 0x5c, 0xb0, 0x09, 0x29, 0x0e, 0x2f, 0xcd, 0xe7, 0xb5, 0xec, 0x66, 0xd9, 0x08, 0x4b, 0xe4, 0x40, 0x55, 0xa6, 0x19, 0xd9, 0xdd, 0x7f, 0xc3, 0x16, 0x6f, 0x94, 0x87, 0xf7, 0xcb, 0x27, 0x29, 0x12, 0x42, 0x64, 0x45, 0x99, 0x85, 0x14, 0xc1, 0x5d, 0x53, 0xa1, 0x8c, 0x86, 0x4c, 0xe3, 0xa2, 0xb7, 0x55, 0x57, 0x93, 0x98, 0x81, 0x26, 0x52, 0x0e, 0xac, 0xf2, 0xe3, 0x06, 0x6e, 0x23, 0x0c, 0x91, 0xbe, 0xe4, 0xdd, 0x53, 0x04, 0xf5, 0xfd, 0x04, 0x05, 0xb3, 0x5b, 0xd9, 0x9c, 0x73, 0x13, 0x5d, 0x3d, 0x9b, 0xc3, 0x35, 0xee, 0x04, 0x9e, 0xf6, 0x9b, 0x38, 0x67, 0xbf, 0x2d, 0x7b, 0xd1, 0xea, 0xa5, 0x95, 0xd8, 0xbf, 0xc0, 0x06, 0x6f, 0xf8, 0xd3, 0x15, 0x09, 0xeb, 0x0c, 0x6c, 0xaa, 0x00, 0x6c, 0x80, 0x7a, 0x62, 0x3e, 0xf8, 0x4c, 0x3d, 0x33, 0xc1, 0x95, 0xd2, 0x3e, 0xe3, 0x20, 0xc4, 0x0d, 0xe0, 0x55, 0x81, 0x57, 0xc8, 0x22, 0xd4, 0xb8, 0xc5, 0x69, 0xd8, 0x49, 0xae, 0xd5, 0x9d, 0x4e, 0x0f, 0xd7, 0xf3, 0x79, 0x58, 0x6b, 0x4b, 0x7f, 0xf6, 0x84, 0xed, 0x6a, 0x18, 0x9f, 0x74, 0x86, 0xd4, 0x9b, 0x9c, 0x4b, 0xad, 0x9b, 0xa2, 0x4b, 0x96, 0xab, 0xf9, 0x24, 0x37, 0x2c, 0x8a, 0x8f, 0xff, 0xb1, 0x0d, 0x55, 0x35, 0x49, 0x00, 0xa7, 0x7a, 0x3d, 0xb5, 0xf2, 0x05, 0xe1, 0xb9, 0x9f, 0xcd, 0x86, 0x60, 0x86, 0x3a, 0x15, 0x9a, 0xd4, 0xab, 0xe4, 0x0f, 0xa4, 0x89, 0x34, 0x16, 0x3d, 0xdd, 0xe5, 0x42, 0xa6, 0x58, 0x55, 0x40, 0xfd, 0x68, 0x3c, 0xbf, 0xd8, 0xc0, 0x0f, 0x12, 0x12, 0x9a, 0x28, 0x4d, 0xea, 0xcc, 0x4c, 0xde, 0xfe, 0x58, 0xbe, 0x71, 0x37, 0x54, 0x1c, 0x04, 0x71, 0x26, 0xc8, 0xd4, 0x9e, 0x27, 0x55, 0xab, 0x18, 0x1a, 0xb7, 0xe9, 0x40, 0xb0, 0xc0, }, }, }; #define N_RC4_TESTS (sizeof(rc4_tests) / sizeof(rc4_tests[0])) static int rc4_test(void) { const struct rc4_test *rt; RC4_KEY key; EVP_CIPHER_CTX *ctx = NULL; const EVP_CIPHER *cipher; uint8_t out[512]; int in_len, out_len, total_len; size_t i; int j; int failed = 1; if ((ctx = EVP_CIPHER_CTX_new()) == NULL) { fprintf(stderr, "FAIL: EVP_CIPHER_CTX_new() failed\n"); goto failed; } for (i = 0; i < N_RC4_TESTS; i++) { rt = &rc4_tests[i]; /* Encryption */ memset(out, 0, sizeof(out)); RC4_set_key(&key, rt->key_len, rt->key); RC4(&key, rt->len, rt->in, out); if (memcmp(rt->out, out, rt->len) != 0) { fprintf(stderr, "FAIL: encryption mismatch\n"); goto failed; } /* Decryption */ memset(out, 0, sizeof(out)); RC4_set_key(&key, rt->key_len, rt->key); RC4(&key, rt->len, rt->out, out); if (memcmp(rt->in, out, rt->len) != 0) { fprintf(stderr, "FAIL: decryption mismatch\n"); goto failed; } /* * EVP tests */ if (rt->key_len == 5) { cipher = EVP_rc4_40(); } else if (rt->key_len == 16) { cipher = EVP_rc4(); } else { /* EVP does not support this key length */ continue; } /* EVP encryption */ total_len = 0; memset(out, 0, sizeof(out)); if (!EVP_EncryptInit(ctx, cipher, rt->key, NULL)) { fprintf(stderr, "FAIL: EVP_EncryptInit failed\n"); goto failed; } for (j = 0; j < rt->len;) { in_len = arc4random_uniform(rt->len / 2); if (in_len > rt->len - j) in_len = rt->len - j; if (!EVP_EncryptUpdate(ctx, out + total_len, &out_len, rt->in + j, in_len)) { fprintf(stderr, "FAIL: EVP_EncryptUpdate failed\n"); goto failed; } j += in_len; total_len += out_len; } if (!EVP_EncryptFinal_ex(ctx, out + total_len, &out_len)) { fprintf(stderr, "FAIL: EVP_EncryptFinal_ex failed\n"); goto failed; } total_len += out_len; if (!EVP_CIPHER_CTX_reset(ctx)) { fprintf(stderr, "FAIL: EVP_CIPHER_CTX_reset failed\n"); goto failed; } if (total_len != rt->len) { fprintf(stderr, "FAIL: EVP encryption length mismatch\n"); goto failed; } if (memcmp(rt->out, out, rt->len) != 0) { fprintf(stderr, "FAIL: EVP encryption mismatch\n"); goto failed; } /* EVP decryption */ total_len = 0; memset(out, 0, sizeof(out)); if (!EVP_DecryptInit(ctx, cipher, rt->key, NULL)) { fprintf(stderr, "FAIL: EVP_DecryptInit failed\n"); goto failed; } for (j = 0; j < rt->len;) { in_len = arc4random_uniform(rt->len / 2); if (in_len > rt->len - j) in_len = rt->len - j; if (!EVP_DecryptUpdate(ctx, out + total_len, &out_len, rt->in + j, in_len)) { fprintf(stderr, "FAIL: EVP_DecryptUpdate failed\n"); goto failed; } j += in_len; total_len += out_len; } if (!EVP_DecryptFinal_ex(ctx, out + total_len, &out_len)) { fprintf(stderr, "FAIL: EVP_DecryptFinal_ex failed\n"); goto failed; } total_len += out_len; if (!EVP_CIPHER_CTX_reset(ctx)) { fprintf(stderr, "FAIL: EVP_CIPHER_CTX_reset failed\n"); goto failed; } if (total_len != rt->len) { fprintf(stderr, "FAIL: EVP decryption length mismatch\n"); goto failed; } if (memcmp(rt->out, out, rt->len) != 0) { fprintf(stderr, "FAIL: EVP decryption mismatch\n"); goto failed; } } failed = 0; failed: EVP_CIPHER_CTX_free(ctx); return failed; } int main(int argc, char **argv) { int failed = 0; failed |= rc4_test(); return failed; }