# Fiat-Shamir signature [closed]

I have a question about Fiat-Shamir signature:

A hash function is h(w)=w mod 2011 and w1=2623, w2=3269, w3=1938.

What is h=? and how to determine k.t bits?

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No, you are supposed to use a cryptographic hash function. $h(w) = w \bmod 2011$ is not a cryptographically strong hash function; it's not suitable for use with Fiat-Shamir signatures. –  D.W. Nov 14 '12 at 3:31
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Also, could you please indicate the source of your text included as an image? –  Paŭlo Ebermann Nov 14 '12 at 19:13
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## migrated from security.stackexchange.comNov 13 '12 at 22:44

This question came from our site for Information security professionals.

## closed as unclear what you're asking by Paŭlo Ebermann♦Oct 28 at 20:30

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking.If this question can be reworded to fit the rules in the help center, please edit the question.

## 1 Answer

I think you need to find a better reference on Fiat-Shamir signatures, and in particular, one that will give you more detail.

One good reference is Chapter 11.4 of The Handbook of Applied Cryptography, but there are probably many others.

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