/* * 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 Speck implementation to verify correct behaviour. */ #include #include #include #include #include struct TestVector { const char *name; byte key[32]; byte plaintext[16]; byte ciphertext[16]; }; // Define the test vectors from http://eprint.iacr.org/2013/404 static TestVector const testVectorSpeck128 = { .name = "Speck-128-ECB", .key = {0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00}, .plaintext = {0x6c, 0x61, 0x76, 0x69, 0x75, 0x71, 0x65, 0x20, 0x74, 0x69, 0x20, 0x65, 0x64, 0x61, 0x6d, 0x20}, .ciphertext = {0xa6, 0x5d, 0x98, 0x51, 0x79, 0x78, 0x32, 0x65, 0x78, 0x60, 0xfe, 0xdf, 0x5c, 0x57, 0x0d, 0x18} }; static TestVector const testVectorSpeck192 = { .name = "Speck-192-ECB", .key = {0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00}, .plaintext = {0x72, 0x61, 0x48, 0x20, 0x66, 0x65, 0x69, 0x68, 0x43, 0x20, 0x6f, 0x74, 0x20, 0x74, 0x6e, 0x65}, .ciphertext = {0x1b, 0xe4, 0xcf, 0x3a, 0x13, 0x13, 0x55, 0x66, 0xf9, 0xbc, 0x18, 0x5d, 0xe0, 0x3c, 0x18, 0x86} }; static TestVector const testVectorSpeck256 = { .name = "Speck-256-ECB", .key = {0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00}, .plaintext = {0x65, 0x73, 0x6f, 0x68, 0x74, 0x20, 0x6e, 0x49, 0x20, 0x2e, 0x72, 0x65, 0x6e, 0x6f, 0x6f, 0x70}, .ciphertext = {0x41, 0x09, 0x01, 0x04, 0x05, 0xc0, 0xf5, 0x3e, 0x4e, 0xee, 0xb4, 0x8d, 0x9c, 0x18, 0x8f, 0x43} }; Speck speck; SpeckSmall speckSmall; SpeckTiny speckTiny; byte buffer[16]; void testCipher(BlockCipher *cipher, const struct TestVector *test, size_t keySize, bool decryption = true) { crypto_feed_watchdog(); Serial.print(test->name); Serial.print(" Encryption ... "); cipher->setKey(test->key, keySize); cipher->encryptBlock(buffer, test->plaintext); if (memcmp(buffer, test->ciphertext, 16) == 0) Serial.println("Passed"); else Serial.println("Failed"); if (!decryption) return; Serial.print(test->name); Serial.print(" Decryption ... "); cipher->decryptBlock(buffer, test->ciphertext); if (memcmp(buffer, test->plaintext, 16) == 0) Serial.println("Passed"); else Serial.println("Failed"); } void perfCipher(BlockCipher *cipher, const struct TestVector *test, size_t keySize, bool decryption = true) { unsigned long start; unsigned long elapsed; int count; crypto_feed_watchdog(); Serial.print(test->name); Serial.print(" Set Key ... "); start = micros(); for (count = 0; count < 10000; ++count) { cipher->setKey(test->key, keySize); } elapsed = micros() - start; Serial.print(elapsed / 10000.0); Serial.print("us per operation, "); Serial.print((10000.0 * 1000000.0) / elapsed); Serial.println(" per second"); Serial.print(test->name); Serial.print(" Encrypt ... "); start = micros(); for (count = 0; count < 5000; ++count) { cipher->encryptBlock(buffer, buffer); } elapsed = micros() - start; Serial.print(elapsed / (5000.0 * 16.0)); Serial.print("us per byte, "); Serial.print((16.0 * 5000.0 * 1000000.0) / elapsed); Serial.println(" bytes per second"); if (!decryption) { Serial.println(); return; } Serial.print(test->name); Serial.print(" Decrypt ... "); start = micros(); for (count = 0; count < 5000; ++count) { cipher->decryptBlock(buffer, buffer); } elapsed = micros() - start; Serial.print(elapsed / (5000.0 * 16.0)); Serial.print("us per byte, "); Serial.print((16.0 * 5000.0 * 1000000.0) / elapsed); Serial.println(" bytes per second"); Serial.println(); } void setup() { Serial.begin(9600); Serial.println(); Serial.println("State Sizes:"); Serial.print("Speck ... "); Serial.println(sizeof(Speck)); Serial.print("SpeckSmall ... "); Serial.println(sizeof(SpeckSmall)); Serial.print("SpeckTiny ... "); Serial.println(sizeof(SpeckTiny)); Serial.println(); Serial.println("Speck Test Vectors:"); testCipher(&speck, &testVectorSpeck128, 16); testCipher(&speck, &testVectorSpeck192, 24); testCipher(&speck, &testVectorSpeck256, 32); Serial.println(); Serial.println("SpeckSmall Test Vectors:"); testCipher(&speckSmall, &testVectorSpeck128, 16); testCipher(&speckSmall, &testVectorSpeck192, 24); testCipher(&speckSmall, &testVectorSpeck256, 32); Serial.println(); Serial.println("SpeckTiny Test Vectors:"); testCipher(&speckTiny, &testVectorSpeck128, 16, false); testCipher(&speckTiny, &testVectorSpeck192, 24, false); testCipher(&speckTiny, &testVectorSpeck256, 32, false); Serial.println(); Serial.println("Speck Performance Tests:"); perfCipher(&speck, &testVectorSpeck128, 16); perfCipher(&speck, &testVectorSpeck192, 24); perfCipher(&speck, &testVectorSpeck256, 32); Serial.println("SpeckSmall Performance Tests:"); perfCipher(&speckSmall, &testVectorSpeck128, 16); perfCipher(&speckSmall, &testVectorSpeck192, 24); perfCipher(&speckSmall, &testVectorSpeck256, 32); Serial.println("SpeckTiny Performance Tests:"); perfCipher(&speckTiny, &testVectorSpeck128, 16, false); perfCipher(&speckTiny, &testVectorSpeck192, 24, false); perfCipher(&speckTiny, &testVectorSpeck256, 32, false); } void loop() { }