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3 votes
Accepted

CSIDH - The inverse problem

4 votes
Accepted

How does openssh actually choose the public exponent 'e' when generating a RSA key?

13 votes

Must RSA exponent and modulus be odd

29 votes
Accepted

How to determine the order of an elliptic curve group from its parameters?

3 votes
Accepted

How to break RSA when $q = e^{-1} \bmod p$?

0 votes

What can be said about the order of short Weierstrass curves with $a=1$ and $b=0$?

2 votes
Accepted

Encryption algorithm where proving the decryption is equal to spoiling the key?

2 votes
Accepted

If a curve $E/\mathbb{F}_q$ is secure, what can be said about $E/\mathbb{F}_{q^2}$

0 votes

Do we want to allow/Have we allowed parallelization (e.g GPU programming) to enter the cryptographic field? What are the consequences?

3 votes
Accepted

Isomorphism of Curve25519 and Ed25519?

8 votes

Using a single Ed25519 key for encryption and signature

7 votes
Accepted

Malleability of homomorphic encryption

2 votes
Accepted

When is a PQ key-exchange algorithm suitable for use with long-term static keys?

6 votes
Accepted

How to create a PEM file for storing an RSA key?

7 votes
Accepted

Are there post-quantum cryptosystems with a gap between classical and quantum security?

12 votes
Accepted

Can multiple public keys lead to the same shared secret in X25519?

10 votes

AES Inverse Key Schedule

3 votes
Accepted

Finding tetration in a multiplicative group modulo p

6 votes
Accepted

Does knowing that the exponent is in a certain range help solving discrete log?

38 votes
Accepted

If a hash function $H$ is collision resistant, is it true that $H(x)\neq H(x')$ for all messages $x, x'$ with $x \neq x'$?

5 votes

Is it feasible to get a hash collision for CRC32, MD-5 and SHA-1 on one file?

10 votes

Are "non-mathematical" encryption algorithms comparably secure against brute force key recovery?

6 votes
Accepted

Small solutions to modular arithmetic linear congruence

52 votes

How do we know a cryptographic primitive won't suddenly fail?

8 votes
Accepted

How to find the order of a generator on an elliptic curve?

4 votes

One Time Pad - does it work for long plain texts?

1 vote

Hashing into a supersingular elliptic curve

1 vote

What is the entropy of a Mersenne Twister (MT)?

5 votes

CSIDH: Why do we need ideals in the form of $\langle \ell, \pi \pm 1 \rangle$ in order to apply Vélu's formulas when computing the action?

33 votes
Accepted

How does ECDH arrive on a shared secret?

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