/*
* Copyright (c) 2008-2021 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#import "OFString.h"
#import "OFCryptographicHash.h"
#import "OFMD5Hash.h"
#import "OFRIPEMD160Hash.h"
#import "OFSHA1Hash.h"
#import "OFSHA224Hash.h"
#import "OFSHA256Hash.h"
#import "OFSHA384Hash.h"
#import "OFSHA512Hash.h"
int _OFString_CryptographicHashing_reference;
@implementation OFString (CryptographicHashing)
static OFString *
stringByHashing(Class <OFCryptographicHash> class, OFString *self)
{
void *pool = objc_autoreleasePoolPush();
id <OFCryptographicHash> hash =
[class hashWithAllowsSwappableMemory: true];
size_t digestSize = [class digestSize];
const unsigned char *digest;
char cString[digestSize * 2];
[hash updateWithBuffer: self.UTF8String length: self.UTF8StringLength];
digest = hash.digest;
for (size_t i = 0; i < digestSize; i++) {
uint8_t high, low;
high = digest[i] >> 4;
low = digest[i] & 0x0F;
cString[i * 2] = (high > 9 ? high - 10 + 'a' : high + '0');
cString[i * 2 + 1] = (low > 9 ? low - 10 + 'a' : low + '0');
}
objc_autoreleasePoolPop(pool);
return [OFString stringWithCString: cString
encoding: OF_STRING_ENCODING_ASCII
length: digestSize * 2];
}
- (OFString *)stringByMD5Hashing
{
return stringByHashing([OFMD5Hash class], self);
}
- (OFString *)stringByRIPEMD160Hashing
{
return stringByHashing([OFRIPEMD160Hash class], self);
}
- (OFString *)stringBySHA1Hashing
{
return stringByHashing([OFSHA1Hash class], self);
}
- (OFString *)stringBySHA224Hashing
{
return stringByHashing([OFSHA224Hash class], self);
}
- (OFString *)stringBySHA256Hashing
{
return stringByHashing([OFSHA256Hash class], self);
}
- (OFString *)stringBySHA384Hashing
{
return stringByHashing([OFSHA384Hash class], self);
}
- (OFString *)stringBySHA512Hashing
{
return stringByHashing([OFSHA512Hash class], self);
}
@end