NSMutableData convert to NSString
<p>Why data not similar with <code>objNSData</code>?  </p>

<pre><code>NSString *strData = @"Bonjour tout le monde, je voudrais vous présenter la Société fdfdfdf  Futur";
NSMutableData *objNSData = [NSMutableData dataWithData:[strData dataUsingEncoding:NSUTF8StringEncoding]];

objNSData = [objNSData EncryptAES:@"samplekey"];

 NSLog(@"objNSData%@", objNSData);

NSString *str=[[NSString alloc] initWithData: objNSData encoding:NSUTF8StringEncoding];

NSLog(@"str%@",str);

NSMutableData *data = [[NSMutableData alloc] initWithData:[ str dataUsingEncoding:NSUTF8StringEncoding]];
 NSLog(@"data%@",data);
</code></pre>
