mirror of
https://github.com/taigrr/arduinolibs
synced 2025-01-18 04:33:12 -08:00
324 lines
8.9 KiB
C++
324 lines
8.9 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 SHA256 implementation to verify correct behaviour.
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*/
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#include <Crypto.h>
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#include <SHA256.h>
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#include <string.h>
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#define HASH_SIZE 32
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#define BLOCK_SIZE 64
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struct TestHashVector
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{
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const char *name;
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const char *key;
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const char *data;
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uint8_t hash[HASH_SIZE];
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};
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static TestHashVector const testVectorSHA256_1 = {
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"SHA-256 #1",
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0,
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"abc",
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{0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea,
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0x41, 0x41, 0x40, 0xde, 0x5d, 0xae, 0x22, 0x23,
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0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c,
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0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00, 0x15, 0xad}
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};
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static TestHashVector const testVectorSHA256_2 = {
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"SHA-256 #2",
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0,
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"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
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{0x24, 0x8d, 0x6a, 0x61, 0xd2, 0x06, 0x38, 0xb8,
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0xe5, 0xc0, 0x26, 0x93, 0x0c, 0x3e, 0x60, 0x39,
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0xa3, 0x3c, 0xe4, 0x59, 0x64, 0xff, 0x21, 0x67,
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0xf6, 0xec, 0xed, 0xd4, 0x19, 0xdb, 0x06, 0xc1}
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};
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static TestHashVector const testVectorHMAC_SHA256_1 = {
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"HMAC-SHA-256 #1",
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"",
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"",
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{0xb6, 0x13, 0x67, 0x9a, 0x08, 0x14, 0xd9, 0xec,
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0x77, 0x2f, 0x95, 0xd7, 0x78, 0xc3, 0x5f, 0xc5,
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0xff, 0x16, 0x97, 0xc4, 0x93, 0x71, 0x56, 0x53,
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0xc6, 0xc7, 0x12, 0x14, 0x42, 0x92, 0xc5, 0xad}
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};
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static TestHashVector const testVectorHMAC_SHA256_2 = {
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"HMAC-SHA-256 #2",
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"key",
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"The quick brown fox jumps over the lazy dog",
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{0xf7, 0xbc, 0x83, 0xf4, 0x30, 0x53, 0x84, 0x24,
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0xb1, 0x32, 0x98, 0xe6, 0xaa, 0x6f, 0xb1, 0x43,
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0xef, 0x4d, 0x59, 0xa1, 0x49, 0x46, 0x17, 0x59,
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0x97, 0x47, 0x9d, 0xbc, 0x2d, 0x1a, 0x3c, 0xd8}
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};
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SHA256 sha256;
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byte buffer[128];
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bool testHash_N(Hash *hash, const struct TestHashVector *test, size_t inc)
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{
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size_t size = strlen(test->data);
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size_t posn, len;
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uint8_t value[HASH_SIZE];
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hash->reset();
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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(value, sizeof(value));
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if (memcmp(value, test->hash, sizeof(value)) != 0)
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return false;
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return true;
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}
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void testHash(Hash *hash, const struct TestHashVector *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 = testHash_N(hash, test, strlen(test->data));
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ok &= testHash_N(hash, test, 1);
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ok &= testHash_N(hash, test, 2);
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ok &= testHash_N(hash, test, 5);
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ok &= testHash_N(hash, test, 8);
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ok &= testHash_N(hash, test, 13);
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ok &= testHash_N(hash, test, 16);
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ok &= testHash_N(hash, test, 24);
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ok &= testHash_N(hash, test, 63);
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ok &= testHash_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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// Very simple method for hashing a HMAC inner or outer key.
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void hashKey(Hash *hash, const uint8_t *key, size_t keyLen, uint8_t pad)
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{
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size_t posn;
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uint8_t buf;
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uint8_t result[HASH_SIZE];
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if (keyLen <= BLOCK_SIZE) {
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hash->reset();
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for (posn = 0; posn < BLOCK_SIZE; ++posn) {
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if (posn < keyLen)
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buf = key[posn] ^ pad;
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else
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buf = pad;
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hash->update(&buf, 1);
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}
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} else {
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hash->reset();
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hash->update(key, keyLen);
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hash->finalize(result, HASH_SIZE);
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hash->reset();
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for (posn = 0; posn < BLOCK_SIZE; ++posn) {
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if (posn < HASH_SIZE)
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buf = result[posn] ^ pad;
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else
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buf = pad;
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hash->update(&buf, 1);
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}
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}
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}
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void testHMAC(Hash *hash, size_t keyLen)
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{
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uint8_t result[HASH_SIZE];
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Serial.print("HMAC-SHA-256 keysize=");
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Serial.print(keyLen);
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Serial.print(" ... ");
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// Construct the expected result with a simple HMAC implementation.
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memset(buffer, (uint8_t)keyLen, keyLen);
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hashKey(hash, buffer, keyLen, 0x36);
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memset(buffer, 0xBA, sizeof(buffer));
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hash->update(buffer, sizeof(buffer));
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hash->finalize(result, HASH_SIZE);
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memset(buffer, (uint8_t)keyLen, keyLen);
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hashKey(hash, buffer, keyLen, 0x5C);
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hash->update(result, HASH_SIZE);
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hash->finalize(result, HASH_SIZE);
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// Now use the library to compute the HMAC.
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hash->resetHMAC(buffer, keyLen);
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memset(buffer, 0xBA, sizeof(buffer));
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hash->update(buffer, sizeof(buffer));
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memset(buffer, (uint8_t)keyLen, keyLen);
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hash->finalizeHMAC(buffer, keyLen, buffer, HASH_SIZE);
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// Check the result.
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if (!memcmp(result, buffer, HASH_SIZE))
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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 testHMAC(Hash *hash, const struct TestHashVector *test)
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{
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uint8_t result[HASH_SIZE];
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Serial.print(test->name);
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Serial.print(" ... ");
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hash->resetHMAC(test->key, strlen(test->key));
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hash->update(test->data, strlen(test->data));
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hash->finalizeHMAC(test->key, strlen(test->key), result, sizeof(result));
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if (!memcmp(result, test->hash, HASH_SIZE))
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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 perfHash(Hash *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();
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start = micros();
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for (count = 0; count < 500; ++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) * 500.0));
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Serial.print("us per byte, ");
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Serial.print((sizeof(buffer) * 500.0 * 1000000.0) / elapsed);
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Serial.println(" bytes per second");
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}
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void perfFinalize(Hash *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("Finalizing ... ");
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hash->reset();
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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, hash->hashSize());
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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 perfHMAC(Hash *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("HMAC Reset ... ");
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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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start = micros();
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for (count = 0; count < 1000; ++count) {
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hash->resetHMAC(buffer, hash->hashSize());
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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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Serial.print("HMAC Finalize ... ");
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hash->resetHMAC(buffer, hash->hashSize());
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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->finalizeHMAC(buffer, hash->hashSize(), buffer, hash->hashSize());
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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(SHA256));
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Serial.println();
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Serial.println("Test Vectors:");
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testHash(&sha256, &testVectorSHA256_1);
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testHash(&sha256, &testVectorSHA256_2);
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testHMAC(&sha256, &testVectorHMAC_SHA256_1);
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testHMAC(&sha256, &testVectorHMAC_SHA256_2);
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testHMAC(&sha256, (size_t)0);
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testHMAC(&sha256, 1);
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testHMAC(&sha256, HASH_SIZE);
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testHMAC(&sha256, BLOCK_SIZE);
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testHMAC(&sha256, BLOCK_SIZE + 1);
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testHMAC(&sha256, sizeof(buffer));
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Serial.println();
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Serial.println("Performance Tests:");
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perfHash(&sha256);
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perfFinalize(&sha256);
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perfHMAC(&sha256);
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}
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void loop()
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{
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}
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