(Objective-C) Transition from RandomizeKey to GenRandomBytesENC

Provides instructions for replacing deprecated RandomizeKey method calls with GenRandomBytesENC.

Note: This example requires Chilkat v11.0.0 or greater.

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

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

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

crypt.CryptAlgorithm = @"aes";
crypt.CipherMode = @"cbc";
crypt.KeyLength = [NSNumber numberWithInt:256];
// ...

// ------------------------------------------------------------------------
// The RandomizeKey method is deprecated:

// Generates and sets a random 32-byte (256-bit) secret key.
[crypt RandomizeKey];

// ------------------------------------------------------------------------
// Do the equivalent using GenRandomBytesENC followed by SetEncodedKey

crypt.EncodingMode = @"base64";
NSString *randomKeyBase64 = [crypt GenRandomBytesENC: [NSNumber numberWithInt: 32]];
[crypt SetEncodedKey: randomKeyBase64 encoding: @"base64"];