Hottest Questions This Month

27

votes

4

answers

4k

views

Why is FIPS 140-2 compliance controversial?

fips-140

modified Nov 24 at 10:38 fgrieu♦ 119k

8

votes

3

answers

953

views

Any advantage to a block cipher which is not efficiently invertible?

modified Dec 1 at 18:39 kelalaka 38.4k

5

votes

2

answers

634

views

Post-quantum algorithms and side channel attacks

post-quantum-cryptography side-channel-attack

modified Nov 9 at 13:21 Daniel S 6,761

1

vote

2

answers

868

views

What is the difference between "Elliptic Curve Function" and "Hash Functions" like SHA256?

hash elliptic-curves sha-256

modified Nov 23 at 16:02 Daniel 3,443

5

votes

1

answer

1k

views

Can a series of triangle reflections be used for cryptography?

algorithm-design provable-security attack

modified Nov 30 at 13:32 J. Doe 681

6

votes

1

answer

592

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Small error in security proof on the paper On the Multi-User Security of Short Schnorr Signatures with Preprocessing

provable-security discrete-logarithm

modified Nov 22 at 14:56 kelalaka 38.4k

3

votes

2

answers

253

views

Time Complexity Of Solving DLog When g and P are known

discrete-logarithm complexity

modified Nov 22 at 14:54 kelalaka 38.4k

4

votes

1

answer

438

views

Shamir secret sharing where some specific people are required to participate

3

votes

3

answers

318

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Composition of cryptographic hash functions

hash collision-resistance

modified 2 hours ago kelalaka 38.4k

2

votes

1

answer

196

views

Grover algorithm for public key cryptography - FrodoKEM

kem grovers-algorithm

modified Nov 12 at 20:53 poncho 126k

4

votes

1

answer

315

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Is there any result which states that if the output of these two functions is XOR'd, the XOR'd output is pseudorandom

pseudo-random-function xor

modified Nov 25 at 17:38 fgrieu♦ 119k

0

votes

1

answer

217

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Why are public keys derived from elliptic curve cryptography (ECC) and not from hashing?

public-key post-quantum-cryptography cryptocurrency

modified Dec 2 at 21:46 fgrieu♦ 119k

4

votes

2

answers

158

views

Testing of PQC NIST round3 submissions

post-quantum-cryptography lattice-crypto nist cryptographic-hardware quantum-cryptography

answered Dec 2 at 19:24 Mark 6,622

2

votes

1

answer

334

views

Linear Complexity of two dimensional finite patterns such as QR codes

pseudo-random-generator lfsr

answered Nov 16 at 4:31 kodlu 15.1k

6

votes

1

answer

157

views

Finding large devious primes

discrete-logarithm prime-numbers safe-prime

modified Nov 11 at 20:58 Daniel S 6,761

1

vote

1

answer

192

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Timing attacks: Symmetric vs Asymmetric Algorithms

public-key symmetric side-channel-attack timing-attack

modified 2 days ago fgrieu♦ 119k

1

vote

2

answers

90

views

In AES-256, what exactly forms the extension field $GF(2^8)$?

aes finite-field group-theory

modified Nov 19 at 6:44 Riccardo 127

4

votes

1

answer

142

views

What are the misconceptions of IBM's CEO Arvind Krishna talk on the "Axios on HBO" about the quantum computing

public-key symmetric quantum-cryptography quantum-computing

modified Nov 17 at 15:13 Maarten Bodewes♦ 81.8k

1

vote

1

answer

216

views

What is a function on a Line or a Curve?

elliptic-curves pairings bilinear-pairing

modified Dec 3 at 8:45 Daniel S 6,761

2

votes

2

answers

115

views

Why do people use protocols like PGP, when TLS already exists?

protocol-design tls pgp

answered Nov 20 at 17:50 Meir Maor 10k

1

vote

3

answers

144

views

Berlekamp–Massey input sequence length

complexity lfsr

modified Nov 7 at 14:43 kelalaka 38.4k

1

vote

1

answer

177

views

How are probabilities combined in the game hopping proof technique?

provable-security semantic-security probability game

modified Nov 9 at 8:23 Peter Mortensen 145

2

votes

2

answers

103

views

What's an algorithm for laypeople to make personal passwords

passwords one-way-function pen-and-paper

modified Nov 10 at 19:31 DocWriter 21

4

votes

1

answer

93

views

ZKP: Prove that >18 while hiding age

public-key zero-knowledge-proofs

answered Nov 23 at 23:26 Ilmari Karonen 43.2k

4

votes

1

answer

92

views

Unable to understand notation regarding Shannon's theorem

encryption

answered Nov 22 at 17:52 Daniel 3,443

4

votes

1

answer

148

views

A question about performing quantum computations on uniform superpositions

quantum-cryptography quantum-computing

modified Nov 24 at 12:42 Daniel S 6,761

3

votes

2

answers

190

views

Are PRNGs Key Derivation Functions?

random-number-generator key-derivation randomness pseudo-random-generator

modified Nov 21 at 15:32 jpa 191

1

vote

1

answer

145

views

Are there any ways to tell if a cryptographic protocol is UC-secure before formally proven its UC-security?

universal-composability

answered Nov 14 at 11:59 Nicholas Brandt 41

2

votes

2

answers

67

views

*-LWE equivalent of Diffie-Hellman $g^{x^2}$ vulnerability

key-exchange lwe

answered Nov 18 at 19:51 Mark 6,622

1

vote

4

answers

101

views

Does SSL connection provide integrity?

signature tls openssl integrity

answered Nov 23 at 5:05 S.Abbe 41

0

votes

1

answer

127

views

Can I know from a Bitcoin public key if the private key is odd or even?

elliptic-curves dsa

modified Nov 25 at 19:45 fgrieu♦ 119k

3

votes

2

answers

72

views

Prove that $x$ is the sum of digitally signed numbers without revealing the summands

signature zero-knowledge-proofs data-privacy

modified Nov 23 at 12:56 Elias Strehle 135

-1

votes

2

answers

92

views

How to decrypt a file using RSA and just a public.pem file?

rsa openssl decryption

modified Nov 28 at 15:12 MostlyResults 51

1

vote

2

answers

116

views

Can you identify these cryptographic algorithmic symbols?

hash notation ripemd

modified yesterday hunter 13

0

votes

1

answer

115

views

Is Diffie-Hellman Key Exchange an Asymmetric or Symmetric Algorithm? [duplicate]

public-key diffie-hellman symmetric

answered Nov 7 at 19:13 Daniel S 6,761

0

votes

3

answers

113

views

Two Elliptic Curve Points having the Same X coordinate

elliptic-curves collision-resistance

modified Nov 24 at 13:57 trijia 3

4

votes

1

answer

87

views

Would being able of factoring integers efficiently have some consequences over Elliptic Curve Cryptography?

rsa public-key elliptic-curves attack hardness-assumptions

answered Nov 25 at 14:08 Geoffroy Couteau 16.1k

3

votes

2

answers

107

views

Why is confusion and diffusion never talked about in asymmetric crypto?

rsa aes public-key diffusion

answered Nov 10 at 8:01 Fractalice 2,905

5

votes

1

answer

61

views

Can an authenticated encryption scheme detect if wrong key is used?

authenticated-encryption key-check-value

answered Nov 9 at 20:34 Mikero 9,565

0

votes

2

answers

96

views

How does AES-256 works if AES is only a 128-bit block cipher?

aes key-size

answered Nov 9 at 12:01 r3mainer 1,958

2

votes

0

answers

251

views

Should I normalize adversary's advantage in IND-XXX Game?

pseudo-random-function indistinguishability advantage

modified Nov 11 at 14:22 apapapa 121

2

votes

3

answers

87

views

What does counter mean in Counter (CTR) Mode? Is it the same as nonce?

ctr

modified Nov 30 at 11:37 kelalaka 38.4k

1

vote

2

answers

128

views

Is it safe to store the hash of a plain text?

encryption hash

answered Nov 22 at 13:21 Meir Maor 10k

1

vote

2

answers

98

views

Is there any fundamental difference between the block cipher operations encryption and decryption?

encryption block-cipher decryption pseudo-random-permutation

answered Dec 2 at 18:14 Fractalice 2,905

2

votes

1

answer

75

views

What is reaction attack?

public-key terminology side-channel-attack

answered Nov 18 at 13:28 Fractalice 2,905

2

votes

1

answer

96

views

How strong if I combine two hash functions, such as MD5(SHA256(input))?

hash sha-256 md5

modified Nov 20 at 8:18 fgrieu♦ 119k

1

vote

2

answers

95

views

When are PRNG used and when are CSPRNG used

keys random-number-generator pseudo-random-generator

modified Nov 15 at 18:03 A. Hersean 792

1

vote

1

answer

91

views

Unhash possible? How got this user the unhash?

hash 2nd-preimage-resistance

modified Nov 17 at 8:47 kelalaka 38.4k

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