(Objective-C) Hash File: SHA-1, HAVAL, MD2, MD5, SHA-256, SHA-384, SHA-512

Computing the hash for a file of any size.

Chilkat Objective-C Library Downloads MAC OS X (Cocoa) Libs iOS Libs

#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);