Hello, What objective-c implementation of Blowfish would you advice to use? (Or may be I just missed some standard implementations available?)
+11
A:
Keep in mind that Objective-C is a superset of C, and so you don't need a specific Objective-C implementation. Blowfish written in C (like at this page, the first result of googling "C blowfish implementation") will do you just fine.
Tim
2009-11-05 15:14:21
Exactly what I was going to say. By the time you're dealing with crypto, you're dealing with bytes, which is really below the level of Objective-C (using NSData as a wrapper notwithstanding).
Sixten Otto
2009-11-05 15:31:43
Thank you for your answer. Thats what I actually thought, but just needed to see someone else opinion
Vladimir
2009-11-05 15:57:43
+4
A:
Not sure if you definitely wanted to go with blowfish, but the iPhone security framework supports the following out-of-the-box:
- kCCAlgorithmAES128 - Advanced Encryption Standard, 128-bit block
- kCCAlgorithmDES - Data Encryption Standard
- kCCAlgorithm3DES - Triple-DES, three key, EDE configuration
- kCCAlgorithmCAST - CAST
- kCCAlgorithmRC4 - RC4 stream cipher
If you do decide to implement your own you may also need an arbitrary precision integer library, libtommath will compile for the iPhone will little to no changes.
jessecurry
2009-11-05 18:44:16