Top Questions

14 votes
5 answers
9k views

Boss insists on storing SHA2(p) || SHA3(p), claiming it "doubles security"

3 votes
2 answers
1k views

Can I change the radio frequency according to my encryption algorithm?

5 votes
3 answers
863 views

Is this probability negligible?

15 votes
1 answer
1k views

Impact of Ryan and Heninger's CRYPTO 2023 paper on post quantum cryptosystems

4 votes
1 answer
2k views

In Bitcoin, given half the 52-character private key in WIF format, is it possible to reconstruct the whole private key?

6 votes
2 answers
471 views

Message Authentication Code Padding Overview

6 votes
1 answer
358 views

RSA with 3e≡1 (mod p−1) and 5e≡1 (mod q−1)

2 votes
2 answers
307 views

Is it possible to create a mix of predefined and generated shares for Shamir's Secret Sharing?

2 votes
4 answers
158 views

Are there asymmetric encryption algorithms that preserve equality? Are they safe to use for data obfuscation?

4 votes
1 answer
246 views

Distinguishing EC Public Key from random

-1 votes
4 answers
184 views

Enigma encryption

3 votes
2 answers
122 views

Quantum attack on CTR

5 votes
1 answer
199 views

What best to put in unused nonce bytes when using AES-GCM-SIV

5 votes
1 answer
150 views
+500

Secret sharing thresold scheme with small shares

0 votes
3 answers
168 views

Why are most KeyGen algorithms constructed to be probabilistic algorithms?

3 votes
1 answer
208 views

Is Goldreich's proof with polynomial number of hybrid arguments wrong?

3 votes
1 answer
198 views

Implications of switching RSA padding schemes

2 votes
1 answer
175 views

Can we use several times the same RSA and ECC keys?

5 votes
0 answers
455 views

Public one-way bijection [duplicate]

1 vote
1 answer
190 views

Could FIPS 186-5 A.1.6 method generate P and Q with different bit size?

1 vote
2 answers
136 views

Name for number of output values a hash function can produce?

3 votes
1 answer
153 views

Carter-Wegman MAC different notations

0 votes
2 answers
117 views

Are security assumptions based on quantum computers too strict? Causing cryptographers to tie their own hands

3 votes
1 answer
171 views

Testing whether the Euler Totient of a number equals to certain value

3 votes
1 answer
101 views

BLS curve with a smaller modulus?

3 votes
1 answer
100 views

The weakening of PQC as a result of lack of KEX?

1 vote
1 answer
162 views

Hash Output Distribution for Partly Randomised Input

3 votes
1 answer
125 views

Standard Montgomery curves over prime field

1 vote
1 answer
157 views

Brute force against DES

0 votes
2 answers
117 views

What efficiency can we expect from an average consumer computer for the RSA algorithm?

2 votes
1 answer
129 views

Generating pseudorandom numbers using Dual_EC_DRBG

1 vote
1 answer
125 views

ChaCha20 as a block cipher

0 votes
1 answer
96 views

Clarifying terms for cipher, algorithm, rsa, asymmetric, openssl

3 votes
2 answers
89 views

RSA given 30% MSB of p and 30%MSB of q

2 votes
1 answer
146 views

SHAKE128 range calculation for MonteCarlo messages

2 votes
1 answer
86 views

Question on the Implementation of Kyber's NTT in the Reference

1 vote
3 answers
108 views

Is the composition of a hash function with a block cipher collision resistant?

0 votes
2 answers
50 views

What weaknesses are worth investigating in this non-linear matrix cipher?

2 votes
2 answers
78 views

One group element hybrid encryption for El Gamal

1 vote
1 answer
77 views

Can ECB block cipher mode be used to implement CTR?

0 votes
1 answer
122 views

"Select" query that provides differential privacy

1 vote
1 answer
121 views

How to calculate Legendre Symbol in secp256k1 Elliptic Curve

3 votes
1 answer
90 views

What could be the side-channel attacks countermeasures other than secure memory overwriting?

2 votes
2 answers
69 views

Impact of security of schnorr's identification verifier when reducing the challenge space

2 votes
1 answer
88 views

Keygen with timelock encryption so that the secret key is hidden from everyone?

1 vote
0 answers
145 views
+50

How could a 1024‒bits RSA modulus be most economically factored within months today?

2 votes
1 answer
86 views

Not understanding elliptic curve scalar multiplication to produce Ethereum address

0 votes
2 answers
86 views

Is it possible to perform reverse rsa encryption ? (using the public key for decrypting and the private key for encrypting)


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