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Re: Error-Qualifying Signatures
(Oops, forgot to include 'punks, sorry Nick)
Nick Szabo asks:
>Is a one-way hash function or digital signature possible with the
>following property: signature verification doesn't just determine
>the boolean altered vs. pristine, but also shows the picture
>distance between the altered and original?
This is possible. It is not a desirable quality for secure-hashes in most
other situations because it compromises the privacy of the original
message. Hash functions are usually designed specifically to avoid this.
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