New answers tagged attack
2
votes
Crack RSA with $e$ and $d$?
Since this is a CTF, I won't give quite a full solution, just try to unstuck the OP (who seemingly made significant progress).
We are given $e$ and $d$. That makes us sure that $e\,d\equiv1\pmod{\...
- 132k
2
votes
Stuck on a cryptanalytical research project
There is already a good answer. In addition, if you think actual cryptosystems used today are at risk but you believe "clock arithmetic" works makes me think actual (public key) ...
- 19.1k
11
votes
Stuck on a cryptanalytical research project
The fact that your attack only works when you're using "normal math" and not "cryptographical math" (by which I assume you probably mean modular arithmetic, or perhaps arithmetic ...
- 45.4k
11
votes
Accepted
Is it insecure to sign the value 0 with ElGamal?
Is it insecure to sign the plaintext 0 with ElGamal signature algorithm?
It is insecure to verify the plaintext that hashes to 0 with the ElGamal signature algorithm, because anyone can generate such ...
- 139k
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