Encryption and Decryption of NSString

[ruhi]

Hello,

I am looking for some help in encrypting and NSString object and decrypting back to original NSString by using some simple algorithm like XOR Encryption.

Please provide me with some help.

Thanks,
Ruhi

[Detrius]

First, you have to actually get accessible binary data.

http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Classes/NSString_Class/Reference/NSString.html#//apple_ref/occ/instm/NSString/UTF8String


In C, binary xor is done with "^"

http://www.fredosaurus.com/notes-cpp/expressions/bitops.html


When you're done, you go back to an NSString:

http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Classes/NSString_Class/Reference/NSString.html#//apple_ref/occ/clm/NSString/stringWithUTF8String: