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An asymmetric (e.g. public-key) cryptosystem, based on modular exponentiation with big exponents and modulus. RSA can be used both for signature and encryption with proper paddings.

1 vote
1 answer
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How to compute $m$ value from RSA if $phi(n)$ is not relative prime with the $e$?

Here is some information we got : We know the value of $n$, with size $1043$. We know the value of $p$ (size $20$) and $q$ (size $1023$) as the factors. $e = 65537.$ $\varphi(n)$ = $(q-1)(p-1)$ When I …
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0 votes
1 answer
223 views

How to find m so that RSA cipher end with '\x00'+SpesificString , if we freely input the pla...

I have an RSA encryption with public key $(3,n)$ with 2048 bits modulus $n$. …
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