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#import "OFSHA224Or256Hash.h"
#import "OFSecureData.h"
#import "OFHashAlreadyCalculatedException.h"
#import "OFOutOfRangeException.h"
#define BLOCK_SIZE 64
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#import "OFSHA224Or256Hash.h"
#import "OFSecureData.h"
#import "OFHashAlreadyCalculatedException.h"
#import "OFOutOfRangeException.h"
static const size_t blockSize = 64;
@interface OFSHA224Or256Hash ()
- (void)of_resetState;
@end
static const uint32_t table[] = {
0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
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};
static OF_INLINE void
byteSwapVectorIfLE(uint32_t *vector, uint_fast8_t length)
{
#ifndef OF_BIG_ENDIAN
for (uint_fast8_t i = 0; i < length; i++)
vector[i] = OF_BSWAP32(vector[i]);
#endif
}
static void
processBlock(uint32_t *state, uint32_t *buffer)
{
uint32_t new[8];
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};
static OF_INLINE void
byteSwapVectorIfLE(uint32_t *vector, uint_fast8_t length)
{
#ifndef OF_BIG_ENDIAN
for (uint_fast8_t i = 0; i < length; i++)
vector[i] = OFByteSwap32(vector[i]);
#endif
}
static void
processBlock(uint32_t *state, uint32_t *buffer)
{
uint32_t new[8];
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byteSwapVectorIfLE(buffer, 16);
for (i = 16; i < 64; i++) {
uint32_t tmp;
tmp = buffer[i - 2];
buffer[i] = (OF_ROR(tmp, 17) ^ OF_ROR(tmp, 19) ^ (tmp >> 10)) +
buffer[i - 7];
tmp = buffer[i - 15];
buffer[i] += (OF_ROR(tmp, 7) ^ OF_ROR(tmp, 18) ^ (tmp >> 3)) +
buffer[i - 16];
}
for (i = 0; i < 64; i++) {
uint32_t tmp1 = new[7] + (OF_ROR(new[4], 6) ^
OF_ROR(new[4], 11) ^ OF_ROR(new[4], 25)) +
((new[4] & (new[5] ^ new[6])) ^ new[6]) +
table[i] + buffer[i];
uint32_t tmp2 = (OF_ROR(new[0], 2) ^ OF_ROR(new[0], 13) ^
OF_ROR(new[0], 22)) +
((new[0] & (new[1] | new[2])) | (new[1] & new[2]));
new[7] = new[6];
new[6] = new[5];
new[5] = new[4];
new[4] = new[3] + tmp1;
new[3] = new[2];
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byteSwapVectorIfLE(buffer, 16);
for (i = 16; i < 64; i++) {
uint32_t tmp;
tmp = buffer[i - 2];
buffer[i] = (OFRotateRight(tmp, 17) ^ OFRotateRight(tmp, 19) ^
(tmp >> 10)) + buffer[i - 7];
tmp = buffer[i - 15];
buffer[i] += (OFRotateRight(tmp, 7) ^ OFRotateRight(tmp, 18) ^
(tmp >> 3)) + buffer[i - 16];
}
for (i = 0; i < 64; i++) {
uint32_t tmp1 = new[7] + (OFRotateRight(new[4], 6) ^
OFRotateRight(new[4], 11) ^ OFRotateRight(new[4], 25)) +
((new[4] & (new[5] ^ new[6])) ^ new[6]) +
table[i] + buffer[i];
uint32_t tmp2 = (OFRotateRight(new[0], 2) ^
OFRotateRight(new[0], 13) ^ OFRotateRight(new[0], 22)) +
((new[0] & (new[1] | new[2])) | (new[1] & new[2]));
new[7] = new[6];
new[6] = new[5];
new[5] = new[4];
new[4] = new[3] + tmp1;
new[3] = new[2];
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+ (size_t)digestSize
{
OF_UNRECOGNIZED_SELECTOR
}
+ (size_t)blockSize
{
return BLOCK_SIZE;
}
+ (instancetype)cryptoHashWithAllowsSwappableMemory: (bool)allowsSwappableMemory
{
return [[[self alloc] initWithAllowsSwappableMemory:
allowsSwappableMemory] autorelease];
}
- (instancetype)initWithAllowsSwappableMemory: (bool)allowsSwappableMemory
{
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+ (size_t)digestSize
{
OF_UNRECOGNIZED_SELECTOR
}
+ (size_t)blockSize
{
return blockSize;
}
+ (instancetype)hashWithAllowsSwappableMemory: (bool)allowsSwappableMemory
{
return [[[self alloc] initWithAllowsSwappableMemory:
allowsSwappableMemory] autorelease];
}
- (instancetype)initWithAllowsSwappableMemory: (bool)allowsSwappableMemory
{
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- (size_t)digestSize
{
OF_UNRECOGNIZED_SELECTOR
}
- (size_t)blockSize
{
return BLOCK_SIZE;
}
- (id)copy
{
OFSHA224Or256Hash *copy = [[[self class] alloc] of_init];
copy->_iVarsData = [_iVarsData copy];
copy->_iVars = copy->_iVarsData.mutableItems;
copy->_allowsSwappableMemory = _allowsSwappableMemory;
copy->_calculated = _calculated;
return copy;
}
- (void)updateWithBuffer: (const void *)buffer_
length: (size_t)length
{
const unsigned char *buffer = buffer_;
if (_calculated)
@throw [OFHashAlreadyCalculatedException
exceptionWithObject: self];
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- (size_t)digestSize
{
OF_UNRECOGNIZED_SELECTOR
}
- (size_t)blockSize
{
return blockSize;
}
- (id)copy
{
OFSHA224Or256Hash *copy = [[[self class] alloc] of_init];
copy->_iVarsData = [_iVarsData copy];
copy->_iVars = copy->_iVarsData.mutableItems;
copy->_allowsSwappableMemory = _allowsSwappableMemory;
copy->_calculated = _calculated;
return copy;
}
- (void)updateWithBuffer: (const void *)buffer_ length: (size_t)length
{
const unsigned char *buffer = buffer_;
if (_calculated)
@throw [OFHashAlreadyCalculatedException
exceptionWithObject: self];
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- (const unsigned char *)digest
{
if (_calculated)
return (const unsigned char *)_iVars->state;
_iVars->buffer.bytes[_iVars->bufferLength] = 0x80;
of_explicit_memset(_iVars->buffer.bytes + _iVars->bufferLength + 1, 0,
64 - _iVars->bufferLength - 1);
if (_iVars->bufferLength >= 56) {
processBlock(_iVars->state, _iVars->buffer.words);
of_explicit_memset(_iVars->buffer.bytes, 0, 64);
}
_iVars->buffer.words[14] =
OF_BSWAP32_IF_LE((uint32_t)(_iVars->bits >> 32));
_iVars->buffer.words[15] =
OF_BSWAP32_IF_LE((uint32_t)(_iVars->bits & 0xFFFFFFFF));
processBlock(_iVars->state, _iVars->buffer.words);
of_explicit_memset(&_iVars->buffer, 0, sizeof(_iVars->buffer));
byteSwapVectorIfLE(_iVars->state, 8);
_calculated = true;
return (const unsigned char *)_iVars->state;
}
- (void)reset
{
[self of_resetState];
_iVars->bits = 0;
of_explicit_memset(&_iVars->buffer, 0, sizeof(_iVars->buffer));
_iVars->bufferLength = 0;
_calculated = false;
}
- (void)of_resetState
{
OF_UNRECOGNIZED_SELECTOR
}
@end
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- (const unsigned char *)digest
{
if (_calculated)
return (const unsigned char *)_iVars->state;
_iVars->buffer.bytes[_iVars->bufferLength] = 0x80;
OFZeroMemory(_iVars->buffer.bytes + _iVars->bufferLength + 1,
64 - _iVars->bufferLength - 1);
if (_iVars->bufferLength >= 56) {
processBlock(_iVars->state, _iVars->buffer.words);
OFZeroMemory(_iVars->buffer.bytes, 64);
}
_iVars->buffer.words[14] =
OFToBigEndian32((uint32_t)(_iVars->bits >> 32));
_iVars->buffer.words[15] =
OFToBigEndian32((uint32_t)(_iVars->bits & 0xFFFFFFFF));
processBlock(_iVars->state, _iVars->buffer.words);
OFZeroMemory(&_iVars->buffer, sizeof(_iVars->buffer));
byteSwapVectorIfLE(_iVars->state, 8);
_calculated = true;
return (const unsigned char *)_iVars->state;
}
- (void)reset
{
[self of_resetState];
_iVars->bits = 0;
OFZeroMemory(&_iVars->buffer, sizeof(_iVars->buffer));
_iVars->bufferLength = 0;
_calculated = false;
}
- (void)of_resetState
{
OF_UNRECOGNIZED_SELECTOR
}
@end
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