/* * Copyright (C) 2015 Southern Storm Software, Pty Ltd. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ /* This example runs tests on the Arcfour implementation to verify correct behaviour. */ #include #include #include struct ArcfourVector { size_t offset; byte keystream[16]; }; // A small selection of test vectors from RFC 6229. static ArcfourVector const testArcfour40Key1[] = { { 0, {0xb2, 0x39, 0x63, 0x05, 0xf0, 0x3d, 0xc0, 0x27, 0xcc, 0xc3, 0x52, 0x4a, 0x0a, 0x11, 0x18, 0xa8}}, { 240, {0x28, 0xcb, 0x11, 0x32, 0xc9, 0x6c, 0xe2, 0x86, 0x42, 0x1d, 0xca, 0xad, 0xb8, 0xb6, 0x9e, 0xae}}, { 768, {0xeb, 0x62, 0x63, 0x8d, 0x4f, 0x0b, 0xa1, 0xfe, 0x9f, 0xca, 0x20, 0xe0, 0x5b, 0xf8, 0xff, 0x2b}}, {2048, {0xcc, 0x58, 0x2f, 0x8b, 0xa9, 0xf2, 0x65, 0xe2, 0xb1, 0xbe, 0x91, 0x12, 0xe9, 0x75, 0xd2, 0xd7}}, {4096, {0xff, 0x25, 0xb5, 0x89, 0x95, 0x99, 0x67, 0x07, 0xe5, 0x1f, 0xbd, 0xf0, 0x8b, 0x34, 0xd8, 0x75}} }; static ArcfourVector const testArcfour128Key1[] = { { 0, {0x9a, 0xc7, 0xcc, 0x9a, 0x60, 0x9d, 0x1e, 0xf7, 0xb2, 0x93, 0x28, 0x99, 0xcd, 0xe4, 0x1b, 0x97}}, { 240, {0x06, 0x59, 0x02, 0xe4, 0xb6, 0x20, 0xf6, 0xcc, 0x36, 0xc8, 0x58, 0x9f, 0x66, 0x43, 0x2f, 0x2b}}, { 768, {0xec, 0xcb, 0xe1, 0x3d, 0xe1, 0xfc, 0xc9, 0x1c, 0x11, 0xa0, 0xb2, 0x6c, 0x0b, 0xc8, 0xfa, 0x4d}}, {2048, {0x8a, 0x44, 0x12, 0x64, 0x11, 0xea, 0xa7, 0x8b, 0xd5, 0x1e, 0x8d, 0x87, 0xa8, 0x87, 0x9b, 0xf5}}, {4096, {0xa3, 0x6a, 0x4c, 0x30, 0x1a, 0xe8, 0xac, 0x13, 0x61, 0x0c, 0xcb, 0xc1, 0x22, 0x56, 0xca, 0xcc}} }; static ArcfourVector const testArcfour256Key1[] = { { 0, {0xea, 0xa6, 0xbd, 0x25, 0x88, 0x0b, 0xf9, 0x3d, 0x3f, 0x5d, 0x1e, 0x4c, 0xa2, 0x61, 0x1d, 0x91}}, { 240, {0x11, 0x4a, 0xe3, 0x44, 0xde, 0xd7, 0x1b, 0x35, 0xf2, 0xe6, 0x0f, 0xeb, 0xad, 0x72, 0x7f, 0xd8}}, { 768, {0xe7, 0xa7, 0xb9, 0xe9, 0xec, 0x54, 0x0d, 0x5f, 0xf4, 0x3b, 0xdb, 0x12, 0x79, 0x2d, 0x1b, 0x35}}, {2048, {0x18, 0xb6, 0x25, 0x03, 0xbf, 0xbc, 0x07, 0x7f, 0xba, 0xbb, 0x98, 0xf2, 0x0d, 0x98, 0xab, 0x34}}, {4096, {0xf3, 0xe4, 0xc0, 0xa2, 0xe0, 0x2d, 0x1d, 0x01, 0xf7, 0xf0, 0xa7, 0x46, 0x18, 0xaf, 0x2b, 0x48}} }; static ArcfourVector const testArcfour40Key2[] = { { 0, {0x80, 0xad, 0x97, 0xbd, 0xc9, 0x73, 0xdf, 0x8a, 0x2e, 0x87, 0x9e, 0x92, 0xa4, 0x97, 0xef, 0xda}}, { 240, {0xfa, 0xa1, 0x48, 0xe9, 0x90, 0x46, 0x18, 0x1f, 0xec, 0x6b, 0x20, 0x85, 0xf3, 0xb2, 0x0e, 0xd9}}, { 768, {0x75, 0xd5, 0xef, 0x26, 0x2b, 0x44, 0xc4, 0x1a, 0x9c, 0xf6, 0x3a, 0xe1, 0x45, 0x68, 0xe1, 0xb9}}, {2048, {0x78, 0x5b, 0x60, 0xfd, 0x7e, 0xc4, 0xe9, 0xfc, 0xb6, 0x54, 0x5f, 0x35, 0x0d, 0x66, 0x0f, 0xab}}, {4096, {0xbf, 0x42, 0xc3, 0x01, 0x8c, 0x2f, 0x7c, 0x66, 0xbf, 0xde, 0x52, 0x49, 0x75, 0x76, 0x81, 0x15}} }; static ArcfourVector const testArcfour128Key2[] = { { 0, {0x72, 0x0c, 0x94, 0xb6, 0x3e, 0xdf, 0x44, 0xe1, 0x31, 0xd9, 0x50, 0xca, 0x21, 0x1a, 0x5a, 0x30}}, { 240, {0xb3, 0x39, 0x4a, 0x40, 0xaa, 0xbf, 0x75, 0xcb, 0xa4, 0x22, 0x82, 0xef, 0x25, 0xa0, 0x05, 0x9f}}, { 768, {0xef, 0x2d, 0x67, 0x6f, 0x15, 0x45, 0xc2, 0xc1, 0x3d, 0xc6, 0x80, 0xa0, 0x2f, 0x4a, 0xdb, 0xfe}}, {2048, {0x58, 0x65, 0xfd, 0xbb, 0x5b, 0x48, 0x06, 0x41, 0x04, 0xe8, 0x30, 0xb3, 0x80, 0xf2, 0xae, 0xde}}, {4096, {0x5b, 0xbe, 0xb4, 0x78, 0x7d, 0x59, 0xe5, 0x37, 0x3f, 0xdb, 0xea, 0x6c, 0x6f, 0x75, 0xc2, 0x9b}} }; static ArcfourVector const testArcfour256Key2[] = { { 0, {0xdd, 0x5b, 0xcb, 0x00, 0x18, 0xe9, 0x22, 0xd4, 0x94, 0x75, 0x9d, 0x7c, 0x39, 0x5d, 0x02, 0xd3}}, { 240, {0xaf, 0x3e, 0x30, 0xf9, 0xc0, 0x95, 0x04, 0x59, 0x38, 0x15, 0x15, 0x75, 0xc3, 0xfb, 0x90, 0x98}}, { 768, {0x85, 0x14, 0xa5, 0x49, 0x58, 0x58, 0x09, 0x6f, 0x59, 0x6e, 0x4b, 0xcd, 0x66, 0xb1, 0x06, 0x65}}, {2048, {0xdd, 0xd2, 0x78, 0x20, 0x55, 0x01, 0x26, 0x69, 0x8e, 0xfa, 0xad, 0xc6, 0x4b, 0x64, 0xf6, 0x6e}}, {4096, {0x37, 0x0b, 0x1c, 0x1f, 0xe6, 0x55, 0x91, 0x6d, 0x97, 0xfd, 0x0d, 0x47, 0xca, 0x1d, 0x72, 0xb8}} }; static byte const key1[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20 }; static byte const key2[] = { 0x1a, 0xda, 0x31, 0xd5, 0xcf, 0x68, 0x82, 0x21, 0xc1, 0x09, 0x16, 0x39, 0x08, 0xeb, 0xe5, 0x1d, 0xeb, 0xb4, 0x62, 0x27, 0xc6, 0xcc, 0x8b, 0x37, 0x64, 0x19, 0x10, 0x83, 0x32, 0x22, 0x77, 0x2a }; #define ArraySize(x) (sizeof(x) / sizeof(x[0])) Arcfour cipher; byte buffer[16]; byte buffer2[128]; byte const zeroes[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; void testArcfour(const char *name, const byte *key, size_t keySize, const struct ArcfourVector *vectors, size_t numVectors) { bool ok = true; Serial.print(name); Serial.print(" ... "); while (numVectors > 0) { cipher.setKey(key, keySize); cipher.drop(vectors->offset); memset(buffer, 0, sizeof(buffer)); cipher.encrypt(buffer, buffer, sizeof(buffer)); if (memcmp(buffer, vectors->keystream, sizeof(buffer)) != 0) ok = false; cipher.setKey(key, keySize); cipher.drop(vectors->offset); cipher.decrypt(buffer, buffer, sizeof(buffer)); if (memcmp(buffer, zeroes, sizeof(buffer)) != 0) ok = false; ++vectors; --numVectors; } Serial.println(ok ? "passed" : "failed"); } void perfArcfourSetKey(const char *name, const uint8_t *key, size_t size) { unsigned long start; unsigned long elapsed; int count; Serial.print(name); Serial.print(" ... "); start = micros(); for (count = 0; count < 1000; ++count) { cipher.setKey(key, size); } elapsed = micros() - start; Serial.print(elapsed / 1000.0); Serial.print("us per operation, "); Serial.print((1000.0 * 1000000.0) / elapsed); Serial.println(" per second"); } void perfArcfourEncrypt(const char *name, const uint8_t *key, size_t size) { unsigned long start; unsigned long elapsed; int count; Serial.print(name); Serial.print(" ... "); cipher.setKey(key, size); start = micros(); for (count = 0; count < 3000; ++count) { cipher.encrypt(buffer2, buffer2, sizeof(buffer2)); } elapsed = micros() - start; Serial.print(elapsed / (sizeof(buffer2) * 3000.0)); Serial.print("us per byte, "); Serial.print((sizeof(buffer2) * 3000.0 * 1000000.0) / elapsed); Serial.println(" bytes per second"); } void perfArcfourDecrypt(const char *name, const uint8_t *key, size_t size) { unsigned long start; unsigned long elapsed; int count; Serial.print(name); Serial.print(" ... "); cipher.setKey(key, size); start = micros(); for (count = 0; count < 3000; ++count) { cipher.decrypt(buffer2, buffer2, sizeof(buffer2)); } elapsed = micros() - start; Serial.print(elapsed / (sizeof(buffer2) * 3000.0)); Serial.print("us per byte, "); Serial.print((sizeof(buffer2) * 3000.0 * 1000000.0) / elapsed); Serial.println(" bytes per second"); } void setup() { Serial.begin(9600); Serial.println(); Serial.println("Test Vectors:"); testArcfour("Arcfour Key1 40 bit", key1, 5, testArcfour40Key1, ArraySize(testArcfour40Key1)); testArcfour("Arcfour Key1 128 bit", key1, 16, testArcfour128Key1, ArraySize(testArcfour128Key1)); testArcfour("Arcfour Key1 256 bit", key1, 32, testArcfour256Key1, ArraySize(testArcfour256Key1)); testArcfour("Arcfour Key2 40 bit", key2 + (32 - 5), 5, testArcfour40Key2, ArraySize(testArcfour40Key2)); testArcfour("Arcfour Key2 128 bit", key2 + 16, 16, testArcfour128Key2, ArraySize(testArcfour128Key2)); testArcfour("Arcfour Key2 256 bit", key2, 32, testArcfour256Key2, ArraySize(testArcfour256Key2)); Serial.println(); Serial.println("Performance Tests:"); perfArcfourSetKey("Arcfour SetKey 40 bit", key1, 5); perfArcfourSetKey("Arcfour SetKey 128 bit", key1, 16); perfArcfourSetKey("Arcfour SetKey 256 bit", key1, 32); perfArcfourEncrypt("Arcfour Encrypt", key1, 16); perfArcfourDecrypt("Arcfour Decrypt", key1, 16); } void loop() { }