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Diffstat (limited to 'Source/JavaScriptCore/wtf/SHA1.cpp')
-rw-r--r-- | Source/JavaScriptCore/wtf/SHA1.cpp | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/Source/JavaScriptCore/wtf/SHA1.cpp b/Source/JavaScriptCore/wtf/SHA1.cpp deleted file mode 100644 index e76f6ac38..000000000 --- a/Source/JavaScriptCore/wtf/SHA1.cpp +++ /dev/null @@ -1,219 +0,0 @@ -/* - * Copyright (C) 2011 Google Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -// A straightforward SHA-1 implementation based on RFC 3174. -// http://www.ietf.org/rfc/rfc3174.txt -// The names of functions and variables (such as "a", "b", and "f") follow notations in RFC 3174. - -#include "config.h" -#include "SHA1.h" - -#include "Assertions.h" -#ifndef NDEBUG -#include "StringExtras.h" -#include "text/CString.h" -#endif - -namespace WTF { - -#ifdef NDEBUG -static inline void testSHA1() { } -#else -static bool isTestSHA1Done; - -static void expectSHA1(CString input, int repeat, CString expected) -{ - SHA1 sha1; - for (int i = 0; i < repeat; ++i) - sha1.addBytes(reinterpret_cast<const uint8_t*>(input.data()), input.length()); - Vector<uint8_t, 20> digest; - sha1.computeHash(digest); - char* buffer = 0; - CString actual = CString::newUninitialized(40, buffer); - for (size_t i = 0; i < 20; ++i) { - snprintf(buffer, 3, "%02X", digest.at(i)); - buffer += 2; - } - ASSERT_WITH_MESSAGE(actual == expected, "input: %s, repeat: %d, actual: %s, expected: %s", input.data(), repeat, actual.data(), expected.data()); -} - -static void testSHA1() -{ - if (isTestSHA1Done) - return; - isTestSHA1Done = true; - - // Examples taken from sample code in RFC 3174. - expectSHA1("abc", 1, "A9993E364706816ABA3E25717850C26C9CD0D89D"); - expectSHA1("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", 1, "84983E441C3BD26EBAAE4AA1F95129E5E54670F1"); - expectSHA1("a", 1000000, "34AA973CD4C4DAA4F61EEB2BDBAD27316534016F"); - expectSHA1("0123456701234567012345670123456701234567012345670123456701234567", 10, "DEA356A2CDDD90C7A7ECEDC5EBB563934F460452"); -} -#endif - -static inline uint32_t f(int t, uint32_t b, uint32_t c, uint32_t d) -{ - ASSERT(t >= 0 && t < 80); - if (t < 20) - return (b & c) | ((~b) & d); - if (t < 40) - return b ^ c ^ d; - if (t < 60) - return (b & c) | (b & d) | (c & d); - return b ^ c ^ d; -} - -static inline uint32_t k(int t) -{ - ASSERT(t >= 0 && t < 80); - if (t < 20) - return 0x5a827999; - if (t < 40) - return 0x6ed9eba1; - if (t < 60) - return 0x8f1bbcdc; - return 0xca62c1d6; -} - -static inline uint32_t rotateLeft(int n, uint32_t x) -{ - ASSERT(n >= 0 && n < 32); - return (x << n) | (x >> (32 - n)); -} - -SHA1::SHA1() -{ - // FIXME: Move unit tests somewhere outside the constructor. See bug 55853. - testSHA1(); - reset(); -} - -void SHA1::addBytes(const uint8_t* input, size_t length) -{ - while (length--) { - ASSERT(m_cursor < 64); - m_buffer[m_cursor++] = *input++; - ++m_totalBytes; - if (m_cursor == 64) - processBlock(); - } -} - -void SHA1::computeHash(Vector<uint8_t, 20>& digest) -{ - finalize(); - - digest.clear(); - digest.resize(20); - for (size_t i = 0; i < 5; ++i) { - // Treat hashValue as a big-endian value. - uint32_t hashValue = m_hash[i]; - for (int j = 0; j < 4; ++j) { - digest[4 * i + (3 - j)] = hashValue & 0xFF; - hashValue >>= 8; - } - } - - reset(); -} - -void SHA1::finalize() -{ - ASSERT(m_cursor < 64); - m_buffer[m_cursor++] = 0x80; - if (m_cursor > 56) { - // Pad out to next block. - while (m_cursor < 64) - m_buffer[m_cursor++] = 0x00; - processBlock(); - } - - for (size_t i = m_cursor; i < 56; ++i) - m_buffer[i] = 0x00; - - // Write the length as a big-endian 64-bit value. - uint64_t bits = m_totalBytes * 8; - for (int i = 0; i < 8; ++i) { - m_buffer[56 + (7 - i)] = bits & 0xFF; - bits >>= 8; - } - m_cursor = 64; - processBlock(); -} - -void SHA1::processBlock() -{ - ASSERT(m_cursor == 64); - - uint32_t w[80] = { 0 }; - for (int t = 0; t < 16; ++t) - w[t] = (m_buffer[t * 4] << 24) | (m_buffer[t * 4 + 1] << 16) | (m_buffer[t * 4 + 2] << 8) | m_buffer[t * 4 + 3]; - for (int t = 16; t < 80; ++t) - w[t] = rotateLeft(1, w[t - 3] ^ w[t - 8] ^ w[t - 14] ^ w[t - 16]); - - uint32_t a = m_hash[0]; - uint32_t b = m_hash[1]; - uint32_t c = m_hash[2]; - uint32_t d = m_hash[3]; - uint32_t e = m_hash[4]; - - for (int t = 0; t < 80; ++t) { - uint32_t temp = rotateLeft(5, a) + f(t, b, c, d) + e + w[t] + k(t); - e = d; - d = c; - c = rotateLeft(30, b); - b = a; - a = temp; - } - - m_hash[0] += a; - m_hash[1] += b; - m_hash[2] += c; - m_hash[3] += d; - m_hash[4] += e; - - m_cursor = 0; -} - -void SHA1::reset() -{ - m_cursor = 0; - m_totalBytes = 0; - m_hash[0] = 0x67452301; - m_hash[1] = 0xefcdab89; - m_hash[2] = 0x98badcfe; - m_hash[3] = 0x10325476; - m_hash[4] = 0xc3d2e1f0; - - // Clear the buffer after use in case it's sensitive. - memset(m_buffer, 0, sizeof(m_buffer)); -} - -} // namespace WTF |