Hottest Questions Today

9

votes

5

answers

3k

views

Is there really no use for MD5 anymore?

hash md5

modified 3 hours ago Squeamish Ossifrage 23.4k

3

votes

1

answer

92

views

Von Neumann Extractor - Which bit is retained?

randomness entropy

answered 5 hours ago kodlu 9,451

1

vote

1

answer

22

views

Does it matter if I publish only publish good or bad hashes after recovering from a hack?

hash md5 integrity

modified 6 hours ago Squeamish Ossifrage 23.4k

0

votes

0

answers

15

views

Decryption an arbitrary cipher with XOR and rotation

cryptanalysis xor

modified 5 hours ago Maarten Bodewes♦ 56.2k

1

vote

1

answer

36

views

Does a different exponent and base but same key help to resolve discrete logarithm?

cryptanalysis discrete-logarithm attack

answered 7 hours ago poncho 94.8k

0

votes

0

answers

20

views

Can Shamir's SSS be augmented so that having the secret as well as half the shares necessary to construct the secret is enough to reconstruct the key?

asked 6 hours ago cplusplusguru 1

3

votes

1

answer

758

views

Can we hide a text first in a picture and then hide that image again in one more image?

encryption steganography

modified 13 hours ago Ella Rose♦ 17.1k

0

votes

0

answers

22

views

Problem with Chaum`s Untraceable Electronic Cash

modular-arithmetic prime-numbers number-theory

modified 13 mins ago forest 5,211

2

votes

0

answers

35

views

How does post quantum key exchange in OpenSSH 8 work?

elliptic-curves diffie-hellman post-quantum-cryptography

asked 13 hours ago xkcd 166

1

vote

1

answer

58

views

Signal Protocol - Counter over TCP?

key-derivation signal-protocol

modified 15 hours ago A. Hersean 210

0

votes

0

answers

26

views

How to exchange a common key to a group of person using Elliptic-curve Diffie–Hellman (ECDH)? [on hold]

public-key elliptic-curves diffie-hellman key-exchange

modified 3 hours ago Anik Islam Abhi 108

0

votes

0

answers

26

views

Decentralized / Distributed Private Key Generation between Untrusted Parties?

public-key key-exchange multiparty-computation key-distribution distributed-decryption

modified 14 hours ago Questioner 101

0

votes

1

answer

51

views

How to define the statistical distance between two probabilistic algorithms?

distinguisher

modified 14 hours ago TeamBright 316

3

votes

1

answer

64

views

How does PUF hardware help in software activation?

license-key puf copy-protection

answered 4 hours ago Paul Uszak 7,827

2

votes

2

answers

44

views

Shamir's secret sharing for vectors

answered 20 hours ago grees 31

1

vote

1

answer

49

views

Reverse the order of encryption and decryption in CBC mode. Does this work?

cbc

answered 20 hours ago dhe25519 51

26

votes

3

answers

157

views

Why does BitLocker not use RSA?

aes rsa

2 days ago

1

vote

0

answers

21

views

What's the main difference between the non-uniform probabilistic polynomial-time adversary and the probabilistic polynomial-time adversary? [on hold]

provable-security

asked 20 hours ago Z.P. 56

0

votes

0

answers

74

views

How could I improve this general block cipher?

cryptanalysis block-cipher

modified 5 hours ago Maarten Bodewes♦ 56.2k

2

votes

2

answers

56

views

Meaning of epsilon in proving a PRG is predictable/ un predictable

stream-cipher pseudo-random-generator

modified yesterday Squeamish Ossifrage 23.4k

0

votes

0

answers

14

views

How users are in control of their funds? [on hold]

cryptocurrency

asked yesterday Sina Nouri 1

1

vote

2

answers

74

views

RSA padding: risk of using constants

rsa

modified 18 hours ago S. L. 104

0

votes

0

answers

12

views

How to forge a Proof-of-Stake blockchain?

cryptocurrency proof-of-work

asked yesterday CryptoLover 432

-1

votes

2

answers

46

views

How to find at least one private key from a large list of compressed public keys secp256k1

public-key elliptic-curves diffie-hellman keys cryptocurrency

modified yesterday Maarten Bodewes♦ 56.2k

1

vote

1

answer

38

views

How can I get select messages ciphers for salsa20poly1305 for unit tests?

encryption authentication salsa20 poly1305 test-vectors

modified yesterday Maarten Bodewes♦ 56.2k

1

vote

1

answer

42

views

Check if two ed25519 points are equivalent

elliptic-curves ed25519

modified yesterday Frank Denis 947

0

votes

0

answers

53

views

How to compute a discrete logarithm modulo a power of 2?

discrete-logarithm

modified yesterday Ilmari Karonen 36k

1

vote

0

answers

30

views

Maximum security strength in bits of ISAAC cipher?

provable-security stream-cipher key-size

modified yesterday Maarten Bodewes♦ 56.2k

0

votes

2

answers

54

views

Who can create a MAC? Who can verify a MAC?

mac

answered yesterday grees 31

5

votes

3

answers

207

views

Can Shor's algorithm factor multi-prime numbers?

rsa factoring quantum-cryptanalysis

modified 2 days ago forest 5,211

1

vote

1

answer

836

views

Difference between decryption and deciphering?

encryption terminology

modified 2 days ago AleksanderRas 3,119

1

vote

1

answer

57

views

SHA256 message schedule examples

hash sha-256

modified yesterday Maarten Bodewes♦ 56.2k

1

vote

0

answers

37

views

Are there a way to progress or age key pairs

keys x25519

modified yesterday Håkan Olsson 6

0

votes

0

answers

18

views

Security implications of an extra inner encrypt for a single block Matyas-Meyer-Oseas hash function

hash algorithm-design collision-resistance hash-signature

asked yesterday Adam Ierymenko 77

1

vote

0

answers

31

views

Efficient fields over arithmetic circuits

modular-arithmetic finite-field number-theory circuit

modified yesterday kelalaka 9,020

0

votes

0

answers

23

views

Unknown encoding with some known parameters [on hold]

cryptanalysis encoding unknown-protocol

asked yesterday abbasi_ahsan 1

1

vote

2

answers

24

views

Is there confirmation blocks in Proof-of-Stake Blockchain?

proof-of-work

answered yesterday user10842694 21

0

votes

2

answers

33

views

How can I follow the validation and verification recommendations of the NaCl (sodium) secretbox library?

encryption authentication salsa20 libsodium poly1305

answered 2 days ago Frank Denis 947

0

votes

1

answer

22

views

montgomery reduction multiplicative identity

elliptic-curves montgomery-multiplication

modified 2 days ago Squeamish Ossifrage 23.4k

1

vote

1

answer

38

views

Difference with round keys and round constant in AES

aes key-schedule

modified 2 days ago Maarten Bodewes♦ 56.2k

0

votes

1

answer

41

views

Computing a sextic twist

elliptic-curves finite-field pairings

answered yesterday Razvan Ursu 11

3

votes

1

answer

157

views

How will be cipher selected when client is running on version TLS 1.3 and server is running on TLS 1.2?

encryption tls key-derivation

modified 2 days ago Maarten Bodewes♦ 56.2k

1

vote

1

answer

36

views

Cheating in (2,6)-Shamir Sharing Scheme

modified 2 days ago kelalaka 9,020

0

votes

0

answers

21

views

good OmegaP for characteristic to use in differential cryptanalysis on DES

des differential-analysis

asked 2 days ago siba36 30

0

votes

1

answer

63

views

RSA calculate public exponent

rsa

modified 2 days ago forest 5,211

0

votes

0

answers

52

views

How can I calculate the feasibility of brute-forcing missing secret shares against the secret checksum? [on hold]

modified 2 hours ago Marco Aurélio da Silva 108

0

votes

0

answers

11

views

AES - How do I write Inverse Sub Bytes in C++? [migrated]

aes

modified 2 days ago kodlu 9,451

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