Symmetric ciphers as hash functions

[Whyte, William]

> If the data is too big, break it up into pieces and chain these
> constructions together. The output of one block becomes the input "IV"
> of the next block.

I think you mean input *key*. This is essentially the Matyas-Meyer-Oseas 
construction, although they define it across two blocks because they 
only had DES (and hence a 64-bit block size) to work with.

William

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