Objective-C

Hash File: SHA-1, HAVAL, MD2, MD5, SHA-256, SHA-384, SHA-512

See more Encryption Examples

Computing the hash for a file of any size. Objective-C

#import <CkoCrypt2.h>
#import <NSString.h>

//  This example assumes the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

CkoCrypt2 *crypt = [[CkoCrypt2 alloc] init];

//  Any type of file may be hashed.
//  There is  no size limitation because the file is consumed
//  in streaming mode internally.
NSString *filename = 0;
filename = @"something.zip";

crypt.HashAlgorithm = @"sha1";
crypt.EncodingMode = @"hex";

//  Other possible EncodingMode settings are: 
//  "quoted-printable", "base64", "base32", and "url";

NSString *hash = [crypt HashFileENC: filename];
NSLog(@"%@",@"SHA1:");
NSLog(@"%@",hash);

//  Hash using MD2
crypt.HashAlgorithm = @"md2";
hash = [crypt HashFileENC: filename];
NSLog(@"%@",@"MD2:");
NSLog(@"%@",hash);

//  Hash using MD5
crypt.HashAlgorithm = @"md5";
hash = [crypt HashFileENC: filename];
NSLog(@"%@",@"MD5:");
NSLog(@"%@",hash);

//  Hash using SHA-256
crypt.HashAlgorithm = @"sha256";
hash = [crypt HashFileENC: filename];
NSLog(@"%@",@"SHA256:");
NSLog(@"%@",hash);

//  Hash using SHA-384
crypt.HashAlgorithm = @"sha384";
hash = [crypt HashFileENC: filename];
NSLog(@"%@",@"SHA384:");
NSLog(@"%@",hash);

//  Hash using SHA-512
crypt.HashAlgorithm = @"sha512";
hash = [crypt HashFileENC: filename];
NSLog(@"%@",@"SHA512:");
NSLog(@"%@",hash);

//  Hash using HAVAL
//  There are two additional properties relevant to HAVAL:
//  HavalRounds, and KeyLength.
//  HavalRounds can have values of 3, 4, or 5.
//  KeyLength can have values of 128, 160, 192, 224, or 256
crypt.HashAlgorithm = @"haval";
crypt.HavalRounds = [NSNumber numberWithInt:5];
crypt.KeyLength = [NSNumber numberWithInt:256];
hash = [crypt HashFileENC: filename];
NSLog(@"%@",@"Haval:");
NSLog(@"%@",hash);