(< Rivest Cipher 2)

olemus
plokkšiffer (R. Rivest, 1987, firmale Lotus):
plokid on 64-bitised,
võtme pikkus on muutuv, kuni 1024 bitti;
algselt omanduslik, pärast pöördkonstrueerimist (1996) avalik
= a symmetric-key block cipher designed by Ron Rivest in 1987

ülevaateid
https://en.wikipedia.org/wiki/RC2

http://www.crypto-it.net/eng/symmetric/rc2.html

https://link.springer.com/content/pdf/10.1007/3-540-69710-1_14.pdf

https://crypto.stackexchange.com/questions/68460/difference-between-rc2-rc4-rc5-and-rc6

standard
https://tools.ietf.org/html/2268

turvalisus
1997. a. tõestati eduka võtmeseoseründe võimalikkus
= the possibility of a successful related key attack was proven in 1997

vt ka
- RC4
- RC5
- RC6