ObjFW  Diff

#include <stdlib.h>
#include <string.h>

#import "OFSHA384Or512Hash.h"
#import "OFSecureData.h"

#import "OFHashAlreadyCalculatedException.h"
#import "OFHashNotCalculatedException.h"
#import "OFOutOfRangeException.h"

static const size_t blockSize = 128;

@interface OFSHA384Or512Hash ()
- (void)of_resetState;
@end

			_iVars->bufferLength = 0;
		}
	}
}

- (const unsigned char *)digest
{
	if (_calculated)
		return (const unsigned char *)_iVars->state;
	if (!_calculated)
		@throw [OFHashNotCalculatedException exceptionWithObject: self];

	return (const unsigned char *)_iVars->state;
}

- (void)calculate
{
	if (_calculated)
		@throw [OFHashAlreadyCalculatedException
		    exceptionWithObject: self];

	_iVars->buffer.bytes[_iVars->bufferLength] = 0x80;
	OFZeroMemory(_iVars->buffer.bytes + _iVars->bufferLength + 1,
	    128 - _iVars->bufferLength - 1);

	if (_iVars->bufferLength >= 112) {
		processBlock(_iVars->state, _iVars->buffer.words);
		OFZeroMemory(_iVars->buffer.bytes, 128);
	}

	_iVars->buffer.words[14] = OFToBigEndian64(_iVars->bits[1]);
	_iVars->buffer.words[15] = OFToBigEndian64(_iVars->bits[0]);

	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];
	OFZeroMemory(_iVars->bits, sizeof(_iVars->bits));
	OFZeroMemory(&_iVars->buffer, sizeof(_iVars->buffer));