Sha256OutputStream.m

/*
 * Copyright 2011-2012 Jason Rush and John Flanagan. All rights reserved.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#import "Sha256OutputStream.h"

@implementation Sha256OutputStream

- (id)initWithOutputStream:(OutputStream *)stream {
    self = [super init];
    if (self) {
        outputStream = stream;
        
        CC_SHA256_Init(&shaCtx);
    }
    return self;
}

- (NSUInteger)write:(const void *)bytes length:(NSUInteger)bytesLength {
    CC_SHA256_Update(&shaCtx, bytes, (CC_LONG)bytesLength);
    
    return [outputStream write:bytes length:bytesLength];
}

- (void)close {
    [outputStream close];
    CC_SHA256_Final(hash, &shaCtx);
}

- (uint8_t *)getHash {
    return hash;
}

@end