Arc4RandomStream.h

//
//  Arc4RandomStream.h
//  KeePass2
//
//  Created by Qiang Yu on 2/28/10.
//  Copyright 2010 Qiang Yu. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "DataSource.h"
#import "RandomStream.h"

#define ARC_BUFFER_SIZE 0x3FF

@interface Arc4RandomStream : NSObject</*InputDataSource, */RandomStream> {	
	//id<InputDataSource> _source;	
	uint8_t _state[256];
	uint32_t _i;
	uint32_t _j;
	
	uint8_t _buffer[ARC_BUFFER_SIZE]; //the size must be >= 512
	uint32_t _index;
}

-(id)init:(uint8_t *)key len:(uint32_t)len;

@end