mirror of
https://github.com/taigrr/arduinolibs
synced 2025-01-18 04:33:12 -08:00
Remove SHA1 from the library
SHA1 is on the cusp of being utterly broken so no new software should be making use of it for any reason.
This commit is contained in:
Rhys Weatherley
@@ -1,319 +0,0 @@
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/*
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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 SHA1 implementation to verify correct behaviour.
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*/
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#include <Crypto.h>
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#include <SHA1.h>
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#include <string.h>
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#define HASH_SIZE 20
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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 testVectorSHA1_1 = {
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"SHA-1 #1",
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0,
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"abc",
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{0xA9, 0x99, 0x3E, 0x36, 0x47, 0x06, 0x81, 0x6A,
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0xBA, 0x3E, 0x25, 0x71, 0x78, 0x50, 0xC2, 0x6C,
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0x9C, 0xD0, 0xD8, 0x9D}
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};
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static TestHashVector const testVectorSHA1_2 = {
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"SHA-1 #2",
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0,
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"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
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{0x84, 0x98, 0x3E, 0x44, 0x1C, 0x3B, 0xD2, 0x6E,
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0xBA, 0xAE, 0x4A, 0xA1, 0xF9, 0x51, 0x29, 0xE5,
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0xE5, 0x46, 0x70, 0xF1}
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};
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static TestHashVector const testVectorHMAC_SHA1_1 = {
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"HMAC-SHA-1 #1",
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"",
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"",
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{0xfb, 0xdb, 0x1d, 0x1b, 0x18, 0xaa, 0x6c, 0x08,
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0x32, 0x4b, 0x7d, 0x64, 0xb7, 0x1f, 0xb7, 0x63,
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0x70, 0x69, 0x0e, 0x1d}
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};
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static TestHashVector const testVectorHMAC_SHA1_2 = {
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"HMAC-SHA-1 #2",
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"key",
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"The quick brown fox jumps over the lazy dog",
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{0xde, 0x7c, 0x9b, 0x85, 0xb8, 0xb7, 0x8a, 0xa6,
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0xbc, 0x8a, 0x7a, 0x36, 0xf7, 0x0a, 0x90, 0x70,
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0x1c, 0x9d, 0xb4, 0xd9}
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};
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SHA1 sha1;
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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-1 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 < 1000; ++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) * 1000.0));
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Serial.print("us per byte, ");
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Serial.print((sizeof(buffer) * 1000.0 * 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(SHA1));
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Serial.println();
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Serial.println("Test Vectors:");
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testHash(&sha1, &testVectorSHA1_1);
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testHash(&sha1, &testVectorSHA1_2);
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testHMAC(&sha1, &testVectorHMAC_SHA1_1);
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testHMAC(&sha1, &testVectorHMAC_SHA1_2);
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testHMAC(&sha1, (size_t)0);
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testHMAC(&sha1, 1);
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testHMAC(&sha1, HASH_SIZE);
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testHMAC(&sha1, BLOCK_SIZE);
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testHMAC(&sha1, BLOCK_SIZE + 1);
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testHMAC(&sha1, sizeof(buffer));
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Serial.println();
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Serial.println("Performance Tests:");
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perfHash(&sha1);
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perfFinalize(&sha1);
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perfHMAC(&sha1);
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}
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void loop()
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{
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}
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