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Tagged with cryptography computational-complexity
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Can we make cryptography signature algorithm based on hardness of isomorphism?
In public key cryptography, Alice knows functions $f$ and its inverse
$f^{-1}$. $f$ is public and $f^{-1}$ is secret. To sign a message
$m$, she gives $(m,a=f^{-1}(m))$. To verify a signature, the ...
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