Blowfish
Blowfish is a keyed, symmetric block cipher, designed in 1993 by Bruce Schneier and included in a large number of cipher suites and encryption products. Blowfish provides a good encryption rate in software and no effective cryptanalysis of it has been found to date. Blowfish is a fast block cipher, except when changing keys.
Bruce Schneier notes that while Blowfish is still in use, he recommends using the more recent Twofish algorithm instead.
Block Size : 64 bits
Key Sizes : 32–448 bits in steps of 8 bits
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