StringEncryptionTransformer class

StringEncryptionTransformer.h

@interface StringEncryptionTransformer : EncryptionTransformer
{}

StringEncryptionTransformer.m

@implementation StringEncryptionTransformer

+ (Class)transformedValueClass
{
   return [NSString class];
}

- (id)transformedValue:(NSString*)string
{
   NSData* data = [string dataUsingEncoding:NSUTF8StringEncoding];
   return [super transformedValue:data];
}

- (id)reverseTransformedValue:(NSData*)data
{
   if (nil == data)
   {
      return nil;
   }

   data = [super reverseTransformedValue:data];

   return [[[NSString alloc] initWithBytes:[data bytes]
                                    length:[data length]
                                  encoding:NSUTF8StringEncoding]
           autorelease];
}

@end