Cryptography

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Use case for extendable-output functions (XOF) such as SHAKE128/SHAKE256
Awarded 2 days ago
Truncating ciphertext as encryption and to decrease bandwidth in code-based PKEs
Awarded Nov 24 at 6:11
Graphically representing points on Elliptic Curve over finite field
Awarded Nov 14 at 4:34
Purpose of DES parity bits
Awarded Oct 25 at 7:50
Should we sign-then-encrypt, or encrypt-then-sign?
Awarded Sep 22 at 9:16
What are the constraints for an IV using AES in CBC mode?
Awarded Sep 22 at 4:52
Creating own ciphertext after a padding oracle attack?
Awarded Sep 19 at 7:49
Why ECDSA has its form?
Awarded Sep 7 at 12:46
Performance of ECDSA, ECKCDSA and ECGDSA
Awarded Aug 23 at 15:10
HMAC vs ECDSA for JWT
Awarded Aug 23 at 15:10
Kyber-CCA-KEM - Deterministic implicit rejection
Awarded Aug 12 at 9:16
Algorithm to factorize $N$ given $N$, $e$, $d$
Awarded Jul 23 at 17:52
Is this asymmetric (public key) cryptosystem based on a 16x16 s-table safe and useful?
Awarded Jul 17 at 16:08
Now that quantum computers have been out for a while, has RSA been cracked?
Awarded Jul 11 at 23:42
In what way is XXTEA really vulnerable?
Awarded Jul 7 at 13:47
Pedersen Hash : when truncating the hash to keep only the X coordinate, is it possible to compute a collision when the Babyjubjub curve is used?
Awarded Jul 4 at 21:51
The effect of truncated hash on entropy
Awarded Jul 4 at 12:57
So is AES-256 more secure or less secure than AES-128 after all?
Awarded Jul 2 at 15:26
how to use these hash functions in python?
Awarded May 30 at 13:02
ECC - ElGamal with Montgomery or Edwards type curves (curve25519, ed25519) - possible?
Awarded May 25 at 18:15
Reversing a Psuedo Crytographic Hash
Awarded May 25 at 13:05
How to perform frequency analysis of a substitution cipher using a Base64 alphabet
Awarded May 16 at 15:28
What is the most secure hand cipher?
Awarded May 7 at 6:15
Mixing Entropy Sources by XOR?
Awarded May 4 at 3:06
Can reduced-round ChaCha be used as non-cryptographic fast PRNG to produce output indistinguishable from random data?
Awarded Apr 24 at 6:41
Why are NaCl secret keys 64 bytes for signing, but 32 bytes for box?
Awarded Apr 23 at 7:31
Does collision resistance imply (or not) second-preimage resistance?
Awarded Apr 5 at 22:50
Is RDSEED a true RNG?
Awarded Mar 25 at 4:32
Bit Flipping Attack on CBC Mode
Awarded Mar 18 at 20:31
How can I generate large prime numbers for RSA?
Awarded Mar 18 at 11:27
Can you explain Bleichenbacher's CCA attack on PKCS#1 v1.5?
Awarded Mar 9 at 14:41
Who first published the interest of more than two prime factors in RSA?
Awarded Feb 24 at 14:31
Is it better to maximize memory usage or number of passes with Argon2i 1.3?
Awarded Feb 20 at 3:40
Is there any research on the problem of making a number more memorable to humans?
Awarded Feb 19 at 17:40
Small Prime Difference in RSA
Awarded Feb 17 at 4:46
What exactly is a negligible (and non-negligible) function?
Awarded Feb 15 at 3:27
RSA using 2 as a public exponent
Awarded Feb 8 at 20:20
DES: how does Richard Outerbridge's Initial Permutation operate?
Awarded Feb 7 at 9:20
What makes a hash function good for password hashing?
Awarded Feb 6 at 12:50
what is the difference between proofs and arguments of knowledge?
Awarded Feb 2 at 18:10
One-way permutation over a small interval?
Awarded Feb 1 at 10:40
Estimating bits of entropy
Awarded Jan 26 at 4:55
Should we MAC-then-encrypt or encrypt-then-MAC?
Awarded Jan 25 at 17:21
How are primes generated for RSA?
Awarded Jan 23 at 0:56
How do you find a single cheater in Shamir Secret Sharing?
Awarded Jan 16 at 5:05
Why is padding used for RSA encryption given that it is not a block cipher?
Awarded Jan 16 at 1:26
Security equivalence proofs for breaking RSA
Awarded Jan 14 at 16:11
How to use GCM mode and associated-data properly
Awarded Jan 12 at 13:46
What is the most practical fully homomorphic cryptosystem?
Awarded Jan 11 at 8:56
Alter plaintext in block cipher AES in CBC mode
Awarded Jan 11 at 8:56
Taking advantage of one-time pad key reuse?
Awarded Jan 10 at 22:10
Can I construct a feasible stream cipher out of HMAC and a secure hash algorithm?
Awarded Jan 10 at 19:36
How cryptographically secure was the original WW2 Enigma machine, from a modern viewpoint?
Awarded Jan 10 at 8:05
PBKDF2 and salt
Awarded Jan 10 at 6:51
Multiple-prime RSA; how many primes can I use, for a 2048-bit modulus?
Awarded Jan 9 at 20:52
Multiple AES Key Derivation from a master key
Awarded Jan 9 at 16:26
How are timestamps verified?
Awarded Jan 9 at 16:26
Can I use the ChaCha core as a 256-bit to 256-bit one-way function?
Awarded Jan 6 at 22:40
Is sharing the modulus for multiple RSA key pairs secure?
Awarded Jan 3 at 16:31
Is this SHA256 hash implementation secure from rainbow table, brute forcing attacks?
Awarded Dec 31, 2022 at 8:41
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