 One round (two half-rounds) of the RC5 block cipher | |
| General | |
|---|---|
| Designers | Ron Rivest |
| First published | 1994 |
| Successors | RC6, Akelarre |
| Cipher detail | |
| Key sizes | 0 to 2040 bits (128 suggested) |
| Block sizes | 32, 64 or 128 bits (64 suggested) |
| Structure | Feistel-like network |
| Rounds | 1-255 (12 suggested originally) |
| Best public cryptanalysis | |
| 12-round RC5 (with 64-bit blocks) is susceptible to a differential attack using 244 chosen plaintexts.[1] | |
In cryptography, RC5 is a symmetric-key block cipher notable for its simplicity. Designed by Ronald Rivest in 1994,[2] RC stands for "Rivest Cipher", or alternatively, "Ron's Code" (compare RC2 and RC4). The Advanced Encryption Standard (AES) candidate RC6 was based on RC5.
- ^ Cite error: The named reference
Biryukovwas invoked but never defined (see the help page). - ^ Rivest, R. L. (1994). "The RC5 Encryption Algorithm" (PDF). Proceedings of the Second International Workshop on Fast Software Encryption (FSE) 1994e. pp. 86–96. Archived from the original (PDF) on 2007-04-17. Retrieved 2004-12-18.