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Added new class: SHA256.

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This commit is contained in:
Julian Storer 2011-07-11 10:19:33 +01:00
parent 2100e68adc
commit 4af7d651f4
17 changed files with 731 additions and 4 deletions
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1
src/audio/audio_file_formats/juce_CoreAudioFormat.cpp
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@ -30,6 +30,7 @@
#include "../../core/juce_StandardHeader.h"
#define Point CarbonDummyPointName
#include <AudioToolbox/AudioToolbox.h>
BEGIN_JUCE_NAMESPACE

2
src/core/juce_StandardHeader.h
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@ -33,7 +33,7 @@
*/
#define JUCE_MAJOR_VERSION 1
#define JUCE_MINOR_VERSION 54
#define JUCE_BUILDNUMBER 21
#define JUCE_BUILDNUMBER 22
/** Current Juce version number.

271
src/cryptography/juce_SHA256.cpp Normal file
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/*
==============================================================================
This file is part of the JUCE library - "Jules' Utility Class Extensions"
Copyright 2004-11 by Raw Material Software Ltd.
------------------------------------------------------------------------------
JUCE can be redistributed and/or modified under the terms of the GNU General
Public License (Version 2), as published by the Free Software Foundation.
A copy of the license is included in the JUCE distribution, or can be found
online at www.gnu.org/licenses.
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.rawmaterialsoftware.com/juce for more information.
==============================================================================
*/
#include "../core/juce_StandardHeader.h"
BEGIN_JUCE_NAMESPACE
#include "juce_SHA256.h"
#include "../io/files/juce_FileInputStream.h"
#include "../io/streams/juce_MemoryInputStream.h"
//==============================================================================
class SHA256Processor
{
public:
SHA256Processor() noexcept
: length (0)
{
state[0] = 0x6a09e667;
state[1] = 0xbb67ae85;
state[2] = 0x3c6ef372;
state[3] = 0xa54ff53a;
state[4] = 0x510e527f;
state[5] = 0x9b05688c;
state[6] = 0x1f83d9ab;
state[7] = 0x5be0cd19;
}
// expects 64 bytes of data
void processFullBlock (const void* const data) noexcept
{
const uint32 constants[] =
{
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
};
uint32 block[16], s[8];
memcpy (s, state, sizeof (s));
for (uint32 j = 0; j < 64; j += 16)
{
#define JUCE_SHA256(i) s[(7 - i) & 7] += S1 (s[(4 - i) & 7]) + ch (s[(4 - i) & 7], s[(5 - i) & 7], s[(6 - i) & 7]) + constants[i + j] \
+ (j != 0 ? (block[i & 15] += s1 (block[(i - 2) & 15]) + block[(i - 7) & 15] + s0 (block[(i - 15) & 15])) \
: (block[i] = ByteOrder::bigEndianInt (addBytesToPointer (data, i * 4)))); \
s[(3 - i) & 7] += s[(7 - i) & 7]; \
s[(7 - i) & 7] += S0 (s[(0 - i) & 7]) + maj (s[(0 - i) & 7], s[(1 - i) & 7], s[(2 - i) & 7])
JUCE_SHA256(0); JUCE_SHA256(1); JUCE_SHA256(2); JUCE_SHA256(3); JUCE_SHA256(4); JUCE_SHA256(5); JUCE_SHA256(6); JUCE_SHA256(7);
JUCE_SHA256(8); JUCE_SHA256(9); JUCE_SHA256(10); JUCE_SHA256(11); JUCE_SHA256(12); JUCE_SHA256(13); JUCE_SHA256(14); JUCE_SHA256(15);
#undef JUCE_SHA256
}
for (int i = 0; i < 8; ++i)
state[i] += s[i];
length += 64;
}
void processFinalBlock (const void* const data, int numBytes) noexcept
{
jassert (numBytes < 64);
length += numBytes;
length *= 8; // (the length is stored as a count of bits, not bytes)
uint8 finalBlocks[128];
memcpy (finalBlocks, data, numBytes);
finalBlocks [numBytes++] = 128; // append a '1' bit
while (numBytes != 56 && numBytes < 64 + 56)
finalBlocks [numBytes++] = 0; // pad with zeros..
for (int i = 8; --i >= 0;)
finalBlocks [numBytes++] = (uint8) (length >> (i * 8)); // append the length.
jassert (numBytes == 64 || numBytes == 128);
processFullBlock (finalBlocks);
if (numBytes > 64)
processFullBlock (finalBlocks + 64);
}
void copyResult (uint8* result) const noexcept
{
for (int i = 0; i < 8; ++i)
{
*result++ = (uint8) (state[i] >> 24);
*result++ = (uint8) (state[i] >> 16);
*result++ = (uint8) (state[i] >> 8);
*result++ = (uint8) state[i];
}
}
void processStream (InputStream& input, int64 numBytesToRead, uint8* const result)
{
if (numBytesToRead < 0)
numBytesToRead = std::numeric_limits<int64>::max();
for (;;)
{
uint8 buffer [64];
const int bytesRead = input.read (buffer, (int) jmin (numBytesToRead, (int64) sizeof (buffer)));
if (bytesRead < sizeof (buffer))
{
processFinalBlock (buffer, bytesRead);
break;
}
numBytesToRead -= sizeof (buffer);
processFullBlock (buffer);
}
copyResult (result);
}
private:
uint32 state[8];
uint64 length;
static inline uint32 rotate (const uint32 x, const uint32 y) noexcept { return (x >> y) | (x << (32 - y)); }
static inline uint32 ch (const uint32 x, const uint32 y, const uint32 z) noexcept { return z ^ ((y ^ z) & x); }
static inline uint32 maj (const uint32 x, const uint32 y, const uint32 z) noexcept { return y ^ ((y ^ z) & (x ^ y)); }
static inline uint32 s0 (const uint32 x) noexcept { return rotate (x, 7) ^ rotate (x, 18) ^ (x >> 3); }
static inline uint32 s1 (const uint32 x) noexcept { return rotate (x, 17) ^ rotate (x, 19) ^ (x >> 10); }
static inline uint32 S0 (const uint32 x) noexcept { return rotate (x, 2) ^ rotate (x, 13) ^ rotate (x, 22); }
static inline uint32 S1 (const uint32 x) noexcept { return rotate (x, 6) ^ rotate (x, 11) ^ rotate (x, 25); }
JUCE_DECLARE_NON_COPYABLE (SHA256Processor);
};
//==============================================================================
SHA256::SHA256()
{
zerostruct (result);
}
SHA256::~SHA256() {}
SHA256::SHA256 (const SHA256& other)
{
memcpy (result, other.result, sizeof (result));
}
SHA256& SHA256::operator= (const SHA256& other)
{
memcpy (result, other.result, sizeof (result));
return *this;
}
SHA256::SHA256 (const MemoryBlock& data)
{
MemoryInputStream m (data, false);
SHA256Processor processor;
processor.processStream (m, -1, result);
}
SHA256::SHA256 (const void* const data, const size_t numBytes)
{
MemoryInputStream m (data, numBytes, false);
SHA256Processor processor;
processor.processStream (m, -1, result);
}
SHA256::SHA256 (InputStream& input, const int64 numBytesToRead)
{
SHA256Processor processor;
processor.processStream (input, numBytesToRead, result);
}
SHA256::SHA256 (const File& file)
{
FileInputStream fin (file);
if (fin.getStatus().wasOk())
{
SHA256Processor processor;
processor.processStream (fin, -1, result);
}
else
{
zerostruct (result);
}
}
MemoryBlock SHA256::getRawData() const
{
return MemoryBlock (result, sizeof (result));
}
String SHA256::toHexString() const
{
return String::toHexString (result, sizeof (result), 0);
}
bool SHA256::operator== (const SHA256& other) const noexcept { return memcmp (result, other.result, sizeof (result)) == 0; }
bool SHA256::operator!= (const SHA256& other) const noexcept { return ! operator== (other); }
//==============================================================================
#if JUCE_UNIT_TESTS
#include "../utilities/juce_UnitTest.h"
class SHA256Tests : public UnitTest
{
public:
SHA256Tests() : UnitTest ("SHA-256") {}
void runTest()
{
beginTest ("SHA-256");
{
char n[] = "";
SHA256 sha (n, 0);
expectEquals (sha.toHexString(), String ("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"));
}
{
const char n[] = "The quick brown fox jumps over the lazy dog";
SHA256 sha (n, sizeof (n) - 1);
expectEquals (sha.toHexString(), String ("d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592"));
}
{
const char n[] = "The quick brown fox jumps over the lazy dog.";
SHA256 sha (n, sizeof (n) - 1);
expectEquals (sha.toHexString(), String ("ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b765448c8635fb6c"));
}
}
};
static SHA256Tests sha256UnitTests;
#endif
END_JUCE_NAMESPACE

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src/cryptography/juce_SHA256.h Normal file
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/*
==============================================================================
This file is part of the JUCE library - "Jules' Utility Class Extensions"
Copyright 2004-11 by Raw Material Software Ltd.
------------------------------------------------------------------------------
JUCE can be redistributed and/or modified under the terms of the GNU General
Public License (Version 2), as published by the Free Software Foundation.
A copy of the license is included in the JUCE distribution, or can be found
online at www.gnu.org/licenses.
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.rawmaterialsoftware.com/juce for more information.
==============================================================================
*/
#ifndef __JUCE_SHA256_JUCEHEADER__
#define __JUCE_SHA256_JUCEHEADER__
#include "../memory/juce_MemoryBlock.h"
#include "../io/streams/juce_InputStream.h"
#include "../io/files/juce_File.h"
//==============================================================================
/**
SHA-256 secure hash generator.
Create one of these objects from a block of source data or a string, and it
represents the SHA-256 hash of that data.
You can retrieve the hash as a raw 32-byte block, or as a 64-digit hex string.
*/
class JUCE_API SHA256
{
public:
//==============================================================================
/** Creates an empty SHA256 object.
The default constructor just creates a hash filled with zeros. (This is not
equal to the hash of an empty block of data).
*/
SHA256();
/** Destructor. */
~SHA256();
/** Creates a copy of another SHA256. */
SHA256 (const SHA256& other);
/** Copies another SHA256. */
SHA256& operator= (const SHA256& other);
//==============================================================================
/** Creates a hash from a block of raw data. */
explicit SHA256 (const MemoryBlock& data);
/** Creates a hash from a block of raw data. */
SHA256 (const void* data, size_t numBytes);
/** Creates a hash from the contents of a stream.
This will read from the stream until the stream is exhausted, or until
maxBytesToRead bytes have been read. If maxBytesToRead is negative, the entire
stream will be read.
*/
SHA256 (InputStream& input, int64 maxBytesToRead = -1);
/** Reads a file and generates the hash of its contents.
If the file can't be opened, the hash will be left uninitialised (i.e. full
of zeros).
*/
explicit SHA256 (const File& file);
//==============================================================================
/** Returns the hash as a 32-byte block of data. */
MemoryBlock getRawData() const;
/** Returns the checksum as a 64-digit hex string. */
String toHexString() const;
//==============================================================================
bool operator== (const SHA256& other) const noexcept;
bool operator!= (const SHA256& other) const noexcept;
private:
//==============================================================================
uint8 result [32];
JUCE_LEAK_DETECTOR (SHA256);
};
#endif // __JUCE_SHA256_JUCEHEADER__

3
src/juce_core_includes.h
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@ -128,6 +128,9 @@
#ifndef __JUCE_RSAKEY_JUCEHEADER__
#include "cryptography/juce_RSAKey.h"
#endif
#ifndef __JUCE_SHA256_JUCEHEADER__
#include "cryptography/juce_SHA256.h"
#endif
#ifndef __JUCE_DIRECTORYITERATOR_JUCEHEADER__
#include "io/files/juce_DirectoryIterator.h"
#endif