Question

I am using the code found at http://pastie.org/966473 to encrypt/decrypt strings using AES in Objective-C (for iPhone).

I placed the two methods in a file called AES.m. The AES.h looks like:

#import <Foundation/Foundation.h>

@interface AES : NSObject

@end

I am trying to call the encrypt method like this:

NSString *strData = txtText.text;
NSMutableData *objNSData = [NSMutableData dataWithData:[strData dataUsingEncoding:NSUTF16StringEncoding]];

 AES *myScript = [[AES alloc] init];

 objNSData = [myScript EncryptAES:txtPassword.text];
 strData = [[NSString alloc] initWithData:objNSData encoding:NSUTF16StringEncoding];
 NSLog(@"%@",[objNSData description]);

But it doesn’t work. It says it can’t find the method. I did try importing both AES.h and AES.m, but no luck.

Answer 1

Add - (NSMutableData*) EncryptAES: (NSString *) key; to your AES.h file between @implementation and @end.