'''[https://www.schneier.com/academic/blowfish/%|%blowfish]''', a 64-bit symmetric block [cipher] by Bruce Schneier, is designed to operate efficiently on 32-bit architectures and accept variable key lengths. In practice initializing the cipher is a slow operation but once initialized the cipher operates very quickly.



** See Also **

   [http://tcllib.sourceforge.net/doc/blowfish.html%|%Tcllib blowfish]:   A pure-Tcl implementation of Blowfish.  Derived from [Blowfish in Tcl].

   [Trfcrypt]:   Includes a compiled implementation of Blowfish.

   [Critlib]:   Includes a compiled implementation of Blowfish

   [BOOK: Applied Cryptography]:   

   [Blowfish Tk client]:   

   [security:encrypt and security:decrypt]:   



** Description **

The successor to Blowfish is [Twofish].


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