Encryption algorithms

Password Keeper support of the following encryption algorithms: AES 128bit and 256bit key mode, Twofish and Blowfish.

AES

Advanced Encryption Standard (AES), also known as Rijndael, is a block cipher adopted as an encryption standard by the U.S. government. AES is a symmetric-key algorithm that was designed to replace its outdated predecessor DES (Data Encryption Standard). This algorithm, developed by Joan Daemen and Vincent Rijmen. Uses keys of different sizes (128, 192 and 256 bits) and equal-size blocks.

Twofish

Twofish is a symmetric-key block cipher with a block size of 128 bits and a key size of up to 256 bits. This algorithm was one of the five finalists of the AES public contest that was announced by National Institute of Standards and Technology (NIST) in 1997. The cryptanalysis of Twofish showed that the algorithm has a much larger strength margin as compared to the rest of finalists in the AES contest.

Blowfish

Blowfish encryption algorithm developed in 1993 by a group of specialists headed by Bruce Schneier, the author of the bestseller “Applied Cryptography”. No successful cryptanalysis of this algorithm has been publicly published since the development of the Blowfish algorithm. It takes a variable-length key, from 32 bits to 448 bits, making it ideal for both domestic and exportable use. The original Blowfish paper was presented at the First Fast Software Encryption workshop in Cambridge, UK.