/* * 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 Ed25519 algorithm. */ #include #include #include #include #include struct TestVector { const char *name; uint8_t privateKey[32]; uint8_t publicKey[32]; uint8_t message[2]; size_t len; uint8_t signature[64]; }; // Test vectors for Ed25519 from: // https://tools.ietf.org/html/draft-irtf-cfrg-eddsa-05 static TestVector const testVectorEd25519_1 PROGMEM = { .name = "Ed25519 #1", .privateKey = {0x9d, 0x61, 0xb1, 0x9d, 0xef, 0xfd, 0x5a, 0x60, 0xba, 0x84, 0x4a, 0xf4, 0x92, 0xec, 0x2c, 0xc4, 0x44, 0x49, 0xc5, 0x69, 0x7b, 0x32, 0x69, 0x19, 0x70, 0x3b, 0xac, 0x03, 0x1c, 0xae, 0x7f, 0x60}, .publicKey = {0xd7, 0x5a, 0x98, 0x01, 0x82, 0xb1, 0x0a, 0xb7, 0xd5, 0x4b, 0xfe, 0xd3, 0xc9, 0x64, 0x07, 0x3a, 0x0e, 0xe1, 0x72, 0xf3, 0xda, 0xa6, 0x23, 0x25, 0xaf, 0x02, 0x1a, 0x68, 0xf7, 0x07, 0x51, 0x1a}, .message = {0x00, 0x00}, .len = 0, .signature = {0xe5, 0x56, 0x43, 0x00, 0xc3, 0x60, 0xac, 0x72, 0x90, 0x86, 0xe2, 0xcc, 0x80, 0x6e, 0x82, 0x8a, 0x84, 0x87, 0x7f, 0x1e, 0xb8, 0xe5, 0xd9, 0x74, 0xd8, 0x73, 0xe0, 0x65, 0x22, 0x49, 0x01, 0x55, 0x5f, 0xb8, 0x82, 0x15, 0x90, 0xa3, 0x3b, 0xac, 0xc6, 0x1e, 0x39, 0x70, 0x1c, 0xf9, 0xb4, 0x6b, 0xd2, 0x5b, 0xf5, 0xf0, 0x59, 0x5b, 0xbe, 0x24, 0x65, 0x51, 0x41, 0x43, 0x8e, 0x7a, 0x10, 0x0b} }; static TestVector const testVectorEd25519_2 PROGMEM = { .name = "Ed25519 #2", .privateKey = {0x4c, 0xcd, 0x08, 0x9b, 0x28, 0xff, 0x96, 0xda, 0x9d, 0xb6, 0xc3, 0x46, 0xec, 0x11, 0x4e, 0x0f, 0x5b, 0x8a, 0x31, 0x9f, 0x35, 0xab, 0xa6, 0x24, 0xda, 0x8c, 0xf6, 0xed, 0x4f, 0xb8, 0xa6, 0xfb}, .publicKey = {0x3d, 0x40, 0x17, 0xc3, 0xe8, 0x43, 0x89, 0x5a, 0x92, 0xb7, 0x0a, 0xa7, 0x4d, 0x1b, 0x7e, 0xbc, 0x9c, 0x98, 0x2c, 0xcf, 0x2e, 0xc4, 0x96, 0x8c, 0xc0, 0xcd, 0x55, 0xf1, 0x2a, 0xf4, 0x66, 0x0c}, .message = {0x72, 0x00}, .len = 1, .signature = {0x92, 0xa0, 0x09, 0xa9, 0xf0, 0xd4, 0xca, 0xb8, 0x72, 0x0e, 0x82, 0x0b, 0x5f, 0x64, 0x25, 0x40, 0xa2, 0xb2, 0x7b, 0x54, 0x16, 0x50, 0x3f, 0x8f, 0xb3, 0x76, 0x22, 0x23, 0xeb, 0xdb, 0x69, 0xda, 0x08, 0x5a, 0xc1, 0xe4, 0x3e, 0x15, 0x99, 0x6e, 0x45, 0x8f, 0x36, 0x13, 0xd0, 0xf1, 0x1d, 0x8c, 0x38, 0x7b, 0x2e, 0xae, 0xb4, 0x30, 0x2a, 0xee, 0xb0, 0x0d, 0x29, 0x16, 0x12, 0xbb, 0x0c, 0x00} }; static TestVector testVector; void printNumber(const char *name, const uint8_t *x, uint8_t len) { static const char hexchars[] = "0123456789ABCDEF"; Serial.print(name); Serial.print(" = "); for (uint8_t posn = 0; posn < len; ++posn) { Serial.print(hexchars[(x[posn] >> 4) & 0x0F]); Serial.print(hexchars[x[posn] & 0x0F]); } Serial.println(); } void testFixedVectors(const struct TestVector *test) { // Copy the test vector out of program memory. memcpy_P(&testVector, test, sizeof(TestVector)); test = &testVector; // Sign using the test vector. uint8_t signature[64]; Serial.print(test->name); Serial.print(" sign ... "); Serial.flush(); unsigned long start = micros(); Ed25519::sign(signature, test->privateKey, test->publicKey, test->message, test->len); unsigned long elapsed = micros() - start; if (memcmp(signature, test->signature, 64) == 0) { Serial.print("ok"); } else { Serial.println("failed"); printNumber("actual ", signature, 64); printNumber("expected", test->signature, 64); } Serial.print(" (elapsed "); Serial.print(elapsed); Serial.println(" us)"); // Verify using the test vector. Serial.print(test->name); Serial.print(" verify ... "); Serial.flush(); start = micros(); bool verified = Ed25519::verify(signature, test->publicKey, test->message, test->len); elapsed = micros() - start; if (verified) { Serial.print("ok"); } else { Serial.println("failed"); } Serial.print(" (elapsed "); Serial.print(elapsed); Serial.println(" us)"); // Check derivation of the public key from the private key. Serial.print(test->name); Serial.print(" derive public key ... "); Serial.flush(); start = micros(); Ed25519::derivePublicKey(signature, test->privateKey); elapsed = micros() - start; if (memcmp(signature, test->publicKey, 32) == 0) { Serial.print("ok"); } else { Serial.println("failed"); printNumber("actual ", signature, 32); printNumber("expected", test->publicKey, 32); } Serial.print(" (elapsed "); Serial.print(elapsed); Serial.println(" us)"); } void testFixedVectors() { testFixedVectors(&testVectorEd25519_1); testFixedVectors(&testVectorEd25519_2); } void setup() { Serial.begin(9600); // Start the random number generator. We don't initialise a noise // source here because we don't need one for testing purposes. // Real applications should of course use a proper noise source. RNG.begin("TestEd25519 1.0", 950); // Perform the tests. testFixedVectors(); Serial.println(); } void loop() { }