Twofish

Twofish is one of several encryption methods proposed by the Advanced Encryption Standard( AES).

Twofish is a symmetric block cipher with a block length of 128 bits and key lengths of 128, 192 or 256 bits. Twofish is used in some encryption programs and on smart cards and is considered an extremely secure method in which the information is encrypted sixteen times in encryption rounds. Like its predecessor, Blowfish, it was developed by Bruce Schneier in 1998.