In cryptography, RC6 is a symmetric key block cipher derived from RC5. It was designed by Ron Rivest, Matt Robshaw, Ray Sidney, and Yiqun Lisa Yin to meet the requirements of the Advanced Encryption Standard (AES) competition. The algorithm was one of the five finalists, and also was submitted to the NESSIE and CRYPTREC projects. It was a proprietary algorithm, patented by RSA Security. According to Ron Rivest, the RC stands for ''Ron's Code'', but the RC documentation says simply RC6.
Key facts
- Block cipher.name
- RC6
- Block cipher.image
- 300px|center
- Block cipher.caption
- The Feistel function of the RC6 algorithm.
- Block cipher.designers
- Ron Rivest, Matt Robshaw, Ray Sidney, Yiqun Lisa Yin
- Block cipher.publish date
- 1998
- Block cipher.derived from
- RC5
- Block cipher.certification
- AES finalist
- Block cipher.key size
- 128, 192, or 256 bits
- Block cipher.block size
- 128 bits
- Block cipher.structure
- Feistel network (Type 2)
- Block cipher.rounds
- 20
via Wikipedia infobox
Article
6 sectionsContents
- Encryption/decryption
- Possible use in NSA "implants"
- Licensing
- References
- Bibliography
- External links
In cryptography, RC6 is a symmetric key block cipher derived from RC5. It was designed by Ron Rivest, Matt Robshaw, Ray Sidney, and Yiqun Lisa Yin to meet the requirements of the Advanced Encryption Standard (AES) competition. The algorithm was one of the five finalists, and also was submitted to the NESSIE and CRYPTREC projects. It was a proprietary algorithm, patented by RSA Security. According to Ron Rivest, the RC stands for ''Ron's Code, but the RC documentation says simply RC6.
RC6 proper has a block size of 128 bits and supports key sizes of 128, 192, and 256 bits up to 2040-bits, but, like RC5, it may be parameterised to support a wide variety of word-lengths, key sizes, and number of rounds. RC6 is very similar to RC5 in structure, using data-dependent rotations, modular addition, and XOR operations; in fact, RC6 could be viewed as interweaving two parallel RC5 encryption processes, although RC6 does use an extra multiplication operation not present in RC5 in order to make the rotation dependent on every bit in a word, and not just the least significant few bits.