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Is there a security analysis of the GQ digital signature scheme?

I'm doing summer cryptography research and I am have been looking for a security analysis of the Guillou-Quisquater (GQ) digital signature scheme, but I have been unable to find one. Since this is ...
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Cryptography and iterations

Hi, Here is a question in cryptography which is probably naive, and a reference request. I was wondering about the following key-exchange scheme, which is a variant on Diffie-Hellman. Consider a ...