Problem in encoding and decoding the string in Iphone sdk

HI Guys,

   Here I am having a problem In encoding/decoding the strings.

Actually I had a string which I am encoding it using the base64.which was working fine.
And now I need to decode the string that was encoded before and want to print it.
I code I written as:

I imported the base64.h and base64.m files into my application which contains the methods as:

+ (NSData *) dataWithBase64EncodedString:(NSString *) string;
- (id) initWithBase64EncodedString:(NSString *) string;
- (NSString *) base64EncodingWithLineLength:(unsigned int) lineLength;

And the code in my view controller where I encode the String is:

- (id)init {
if (self = [super init]) {
    // Cust开发者_开发百科om initialization

  userName = @"Sekhar";
  password = @"Bethalam";
    }
    return self;
    }

-(void)reloadView
{
 NSString *authStr = [NSString stringWithFormat:@"%@:%@",userName,password];
 NSData *authData = [authStr dataUsingEncoding:NSASCIIStringEncoding];
 NSString *authValue = [NSString stringWithFormat:@"%@", [authData base64EncodingWithLineLength:30]];
 NSLog(authValue);
 //const char *str = authValue;
 //NSString *decStr = [StringEncryption DecryptString:authValue];
 //NSLog(decStr);

 //NSData *decodeData = [NSData decode:authValue];
 //NSString *decStr = [NSString stringWithFormat:@"%@",decodeData];
 //NSStr
 //NSLog(decStr);
}

   -(void)viewWillAppear:(BOOL)animated
   {
     [self reloadView];
    }

and now I want to decode the String that I encoded.

But I dont know How to do that.can anyone suggest me with code how to get it.

Anyone's help will be much appreciated. Thank you, Monish.

You need to use the Base64DecodeLookup method in the Base64 class. For a solid description on how to use that for the mac and the iphone try checking out this article. http://cocoawithlove.com/2009/06/base64-encoding-options-on-mac-and.html

Cheers