mirror of
https://github.com/taigrr/arduinolibs
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246 lines
7.9 KiB
C++
246 lines
7.9 KiB
C++
/*
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* Copyright (C) 2015 Southern Storm Software, Pty Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/*
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This example runs tests on the GHASH implementation to verify correct behaviour.
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*/
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#include <Crypto.h>
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#include <GHASH.h>
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#include <string.h>
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// Test vectors from Appendix B of:
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// http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/gcm/gcm-revised-spec.pdf
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struct TestVector
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{
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const char *name;
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uint8_t key[16];
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uint8_t data[112];
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size_t dataLen;
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uint8_t hash[16];
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};
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static TestVector const testVectorGHASH_1 = {
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.name = "GHASH #1",
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.key = {0x66, 0xe9, 0x4b, 0xd4, 0xef, 0x8a, 0x2c, 0x3b,
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0x88, 0x4c, 0xfa, 0x59, 0xca, 0x34, 0x2b, 0x2e},
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.data = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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.dataLen = 16,
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.hash = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
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};
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static TestVector const testVectorGHASH_2 = {
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.name = "GHASH #2",
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.key = {0x66, 0xe9, 0x4b, 0xd4, 0xef, 0x8a, 0x2c, 0x3b,
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0x88, 0x4c, 0xfa, 0x59, 0xca, 0x34, 0x2b, 0x2e},
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.data = {0x03, 0x88, 0xda, 0xce, 0x60, 0xb6, 0xa3, 0x92,
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0xf3, 0x28, 0xc2, 0xb9, 0x71, 0xb2, 0xfe, 0x78,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80},
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.dataLen = 32,
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.hash = {0xf3, 0x8c, 0xbb, 0x1a, 0xd6, 0x92, 0x23, 0xdc,
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0xc3, 0x45, 0x7a, 0xe5, 0xb6, 0xb0, 0xf8, 0x85}
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};
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static TestVector const testVectorGHASH_3 = {
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.name = "GHASH #3",
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.key = {0xb8, 0x3b, 0x53, 0x37, 0x08, 0xbf, 0x53, 0x5d,
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0x0a, 0xa6, 0xe5, 0x29, 0x80, 0xd5, 0x3b, 0x78},
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.data = {0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
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0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
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0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
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0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
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0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
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0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
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0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
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0x3d, 0x58, 0xe0, 0x91, 0x47, 0x3f, 0x59, 0x85,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00},
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.dataLen = 80,
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.hash = {0x7f, 0x1b, 0x32, 0xb8, 0x1b, 0x82, 0x0d, 0x02,
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0x61, 0x4f, 0x88, 0x95, 0xac, 0x1d, 0x4e, 0xac}
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};
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static TestVector const testVectorGHASH_4 = {
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.name = "GHASH #4",
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.key = {0xb8, 0x3b, 0x53, 0x37, 0x08, 0xbf, 0x53, 0x5d,
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0x0a, 0xa6, 0xe5, 0x29, 0x80, 0xd5, 0x3b, 0x78},
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.data = {0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
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0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
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0xab, 0xad, 0xda, 0xd2, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
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0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
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0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
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0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
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0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
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0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
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0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
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0x3d, 0x58, 0xe0, 0x91, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa0,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xe0},
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.dataLen = 112,
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.hash = {0x69, 0x8e, 0x57, 0xf7, 0x0e, 0x6e, 0xcc, 0x7f,
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0xd9, 0x46, 0x3b, 0x72, 0x60, 0xa9, 0xae, 0x5f}
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};
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GHASH ghash;
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byte buffer[128];
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bool testGHASH_N(GHASH *hash, const struct TestVector *test, size_t inc)
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{
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size_t size = test->dataLen;
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size_t posn, len;
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hash->reset(test->key);
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for (posn = 0; posn < size; posn += inc) {
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len = size - posn;
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if (len > inc)
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len = inc;
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hash->update(test->data + posn, len);
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}
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hash->finalize(buffer, 16);
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return !memcmp(buffer, test->hash, 16);
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}
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void testGHASH(GHASH *hash, const struct TestVector *test)
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{
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bool ok;
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Serial.print(test->name);
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Serial.print(" ... ");
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ok = testGHASH_N(hash, test, test->dataLen);
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ok &= testGHASH_N(hash, test, 1);
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ok &= testGHASH_N(hash, test, 2);
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ok &= testGHASH_N(hash, test, 5);
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ok &= testGHASH_N(hash, test, 8);
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ok &= testGHASH_N(hash, test, 13);
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ok &= testGHASH_N(hash, test, 16);
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ok &= testGHASH_N(hash, test, 24);
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ok &= testGHASH_N(hash, test, 63);
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ok &= testGHASH_N(hash, test, 64);
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if (ok)
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Serial.println("Passed");
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else
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Serial.println("Failed");
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}
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void perfGHASH(GHASH *hash)
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{
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unsigned long start;
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unsigned long elapsed;
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int count;
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Serial.print("Hashing ... ");
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for (size_t posn = 0; posn < sizeof(buffer); ++posn)
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buffer[posn] = (uint8_t)posn;
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hash->reset(testVectorGHASH_1.key);
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start = micros();
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for (count = 0; count < 200; ++count) {
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hash->update(buffer, sizeof(buffer));
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}
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elapsed = micros() - start;
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Serial.print(elapsed / (sizeof(buffer) * 200.0));
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Serial.print("us per byte, ");
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Serial.print((sizeof(buffer) * 200.0 * 1000000.0) / elapsed);
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Serial.println(" bytes per second");
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}
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void perfGHASHSetKey(GHASH *hash)
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{
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unsigned long start;
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unsigned long elapsed;
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int count;
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Serial.print("Set Key ... ");
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start = micros();
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for (count = 0; count < 1000; ++count) {
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hash->reset(testVectorGHASH_1.key);
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}
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elapsed = micros() - start;
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Serial.print(elapsed / 1000.0);
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Serial.print("us per op, ");
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Serial.print((1000.0 * 1000000.0) / elapsed);
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Serial.println(" ops per second");
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}
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void perfGHASHFinalize(GHASH *hash)
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{
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unsigned long start;
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unsigned long elapsed;
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int count;
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Serial.print("Finalize ... ");
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hash->reset(testVectorGHASH_1.key);
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hash->update("abc", 3);
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start = micros();
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for (count = 0; count < 1000; ++count) {
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hash->finalize(buffer, 16);
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}
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elapsed = micros() - start;
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Serial.print(elapsed / 1000.0);
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Serial.print("us per op, ");
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Serial.print((1000.0 * 1000000.0) / elapsed);
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Serial.println(" ops per second");
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}
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void setup()
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{
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Serial.begin(9600);
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Serial.println();
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Serial.print("State Size ... ");
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Serial.println(sizeof(GHASH));
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Serial.println();
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Serial.println("Test Vectors:");
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testGHASH(&ghash, &testVectorGHASH_1);
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testGHASH(&ghash, &testVectorGHASH_2);
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testGHASH(&ghash, &testVectorGHASH_3);
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testGHASH(&ghash, &testVectorGHASH_4);
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Serial.println();
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Serial.println("Performance Tests:");
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perfGHASH(&ghash);
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perfGHASHSetKey(&ghash);
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perfGHASHFinalize(&ghash);
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}
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void loop()
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{
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}
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