ObjXMPP  Diff

				  encoding: OF_STRING_ENCODING_ASCII
				    length: 64];
}

- (const uint8_t *)XMPP_HMACWithKey: (OFData *)key
			       data: (OFData *)data
{
	void *pool = objc_autoreleasePoolPush();
	OFMutableData *k = [OFMutableData data];
	size_t i, kSize, blockSize = [_hashType blockSize];
	uint8_t *kI = NULL, *kO = NULL;
	id <OFCryptoHash> hashI, hashO;

	if ([key itemSize] * [key count] > blockSize) {
		hashI = [[[_hashType alloc] init] autorelease];

				 length: [_hashType digestSize]];
	} @finally {
		[self freeMemory: kI];
		[self freeMemory: kO];
	}

	[hashO retain];

	objc_autoreleasePoolPop(pool);

	return [[hashO autorelease] digest];
}

- (OFData *)XMPP_hiWithData: (OFData *)str
		       salt: (OFData *)salt
	     iterationCount: (intmax_t)i
{
	void *pool = objc_autoreleasePoolPush();
	size_t digestSize = [_hashType digestSize];
	uint8_t *result = NULL;
	const uint8_t *u, *uOld;
	intmax_t j, k;
	OFMutableData *salty, *tmp, *ret;

	result = [self allocMemoryWithSize: digestSize];

			result[j] ^= uOld[j];

		for (j = 0; j < i - 1; j++) {
			tmp = [[OFMutableData alloc] init];
			[tmp addItems: uOld
				count: digestSize];

			/* releases uOld and previous tmp */
			objc_autoreleasePoolPop(pool);
			pool = objc_autoreleasePoolPush();
			[tmp autorelease];

			u = [self XMPP_HMACWithKey: str
					      data: tmp];

			for (k = 0; k < digestSize; k++)
				result[k] ^= u[k];

			uOld = u;
		}

		ret = [OFMutableData dataWithItems: result
					     count: digestSize];
	} @finally {
		[self freeMemory: result];
	}

	[ret retain];

	objc_autoreleasePoolPop(pool);

	return [ret autorelease];
}
@end