R block cipher is a new block cipher suitable for database encryption which is based on RC5 and RC6. R has a variable word size, a variable number of rounds, and a variabled-length secret key.

• 在RC5和RC6基础上提出了一个新的适合数据库加密的R分组加密算法,它具有分组长度、轮数和密钥长度均可变的特点。