Search code examples
iphoneiosios5ios4

How to concatenate 3 NSData variables

How to concatenate 3 NSData variables ?

NSData *iv;
NSData *salt;
NSData *encryptedData;

I need to join these to a single variable. Can any one show me a way.

Solution

  • use an NSMutableData object and the method -(void)appendData:(NSData *)otherData

    Edited to add example :

    NSMutableData *concatenatedData = [NSMutableData data];
[concatenatedData appendData:iv];
[concatenatedData appendData:salt];
[concatenatedData appendData:encryptedData];
// and now you have all of the data in the single variable "concatenatedData"