BassOmatic

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BassOmatic
General
DesignersPhil Zimmermann
First published1991
Cipher detail
Key sizes8 to 2048 bits
Block sizes2048 bits
Rounds1–8

In

CRYPTO conference,[1] Zimmermann replaced it with IDEA
in subsequent versions of PGP.

The name is explained in this comment from the source code: "BassOmatic gets its name from an old Dan Aykroyd Saturday Night Live skit involving a blender and a whole fish. The BassOmatic algorithm does to data what the original BassOmatic did to the fish."

Algorithm

The algorithm operates on blocks of 256 bytes (or 2048 bits). The actual

key space
is not flat.

The chosen key schedule produces a total of 8 permutation tables, each a

bit-planes
independently, or in groups of 4, depending on control bit 3. The permutation tables stay the same through all rounds of encryption on a given block, but if control bit 5 is set, then the tables are regenerated after each block.

References

External links