User Q-Club

74

votes

4

answers

11k

views

How come Public key cryptography wasn't discovered earlier?

May 27 '18 at 12:09 Community♦ 1

40

votes

10

answers

12k

views

Differences between industrial and military cryptography

encryption military-encryption

Aug 10 '19 at 8:32 Patriot 1,924

30

votes

3

answers

7k

views

How practical are side-channel attacks and how much of a concern are they?

cryptanalysis side-channel-attack

Sep 5 at 20:39 fgrieu♦ 104k

29

votes

2

answers

7k

views

Fixed point of the SHA-256 compression function

collision-resistance sha-256

Jun 28 '17 at 17:33 Community♦ 1

29

votes

2

answers

4k

views

What are recommended, general strategies to start block-cipher design and/or analysis?

cryptanalysis block-cipher algorithm-design

May 1 '19 at 8:02 forest 10.5k

25

votes

4

answers

4k

views

What makes Quantum Cryptography secure?

key-exchange quantum-cryptography key-distribution

Jun 11 at 19:54 Community♦ 1

25

votes

5

answers

7k

views

Can a hard drive store clear text data that is physically impossible to retrieve?

keys cryptographic-hardware

Feb 9 '18 at 10:32 Baptiste Candellier 101

21

votes

5

answers

4k

views

How useful is NIST's Randomness Beacon for cryptographic use?

randomness standards nist timestamping

Oct 11 '19 at 4:40 Community♦ 1

21

votes

5

answers

7k

views

Desirable S-box properties

s-boxes

Jan 11 at 16:17 Community♦ 1

20

votes

2

answers

1k

views

Choice of multiplication polynomial in Rijndael s-box affine mapping

aes finite-field s-boxes rijndael

Mar 15 '18 at 0:23 Community♦ 1

19

votes

1

answer

664

views

Quantum complexity of LWE

post-quantum-cryptography factoring complexity lattice-crypto

Jun 8 '18 at 14:28 floor cat 174

18

votes

1

answer

747

views

Message-Recovery variant of Ed25519 signature?

ed25519 message-recovery

Apr 17 at 12:07 Tobu 103

15

votes

0

answers

287

views

Adding bit constants to the key schedule to reduce rounds?

reference-request lfsr feistel-network differential-analysis

Jan 29 at 15:52 b degnan 3,905

14

votes

2

answers

613

views

How were one-time pads and keys historically generated?

one-time-pad classical-cipher history

Feb 3 '18 at 16:19 e-sushi 16.8k

14

votes

3

answers

1k

views

Can we ensure the security of a crypto-algorithm and -implementaton against acoustic cryptanalysis?

rsa cryptanalysis keys key-recovery acoustic-cryptanalysis

Aug 7 '14 at 14:09 Community♦ 1

13

votes

1

answer

1k

views

Doubt about published test vectors for gimli hash

hash test-vectors gimli

Aug 21 '17 at 22:26 Biv 9,410

12

votes

0

answers

168

views

Space complexity of quantum collision search?

cryptanalysis collision-resistance reference-request quantum-cryptanalysis

Sep 8 '19 at 0:44 forest 10.5k

12

votes

3

answers

10k

views

What is the difference between SHA-3(Keccak) and previous generation SHA algorithms?

hash algorithm-design sha-1 sha-2 sha-3

Apr 27 '16 at 17:35 e-sushi 16.8k

12

votes

2

answers

16k

views

What is the difference between SHA-3 and SHA-256?

sha-256 sha-3

Mar 30 '19 at 0:17 Community♦ 1

11

votes

3

answers

3k

views

How to evaluate chi squared result?

random-number-generator randomness

Mar 21 '19 at 17:06 Squeamish Ossifrage 41.4k

11

votes

3

answers

2k

views

How small is negligible?

security-definition negligible

Aug 26 '18 at 10:49 Paul Uszak 1

10

votes

1

answer

728

views

Collision resistance of hash function built on modular exponentiation

hash rsa collision-resistance

May 14 '18 at 13:42 Squeamish Ossifrage 41.4k

10

votes

2

answers

233

views

Historic Authentication Schemes Before Computers

authentication classical-cipher history

Feb 2 '18 at 20:01 Ella Rose 18.5k

10

votes

1

answer

298

views

AES cache-timing attacks and nonce-based operation modes

aes gcm timing-attack ccm

Aug 28 '18 at 20:01 Community♦ 1

10

votes

2

answers

311

views

Which symmetric encryption systems, pseudorandom number generators, and hash functions are best suited for reversible computers?

encryption hash pseudo-random-generator

Mar 3 '18 at 20:54 Joseph Van Name 1

9

votes

1

answer

460

views

Are there any security issues when replacing the SHA-256 initialisation values?

cryptanalysis algorithm-design reference-request implementation sha-256

Mar 12 '17 at 12:27 Community♦ 1

9

votes

2

answers

1k

views

Why is pqRSA in the NIST PQC submissions?

rsa post-quantum-cryptography nist multi-prime-rsa

May 28 '18 at 14:10 Mike Ounsworth 2,977

9

votes

2

answers

3k

views

Definitions of secrecy

perfect-secrecy forward-secrecy

Sep 14 '18 at 5:34 Shan Chen 2,375

8

votes

1

answer

200

views

Can the lengths of HTTPS requests be used to deduce which public pages on a site are visited?

tls side-channel-attack

May 8 '19 at 5:20 Community♦ 1

8

votes

2

answers

963

views

What criteria make the theta step of Keccak's round function reversible?

sha-3 keccak function-evaluation

Jun 6 '17 at 6:20 Q-Club 1

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How come Public key cryptography wasn't discovered earlier?

Differences between industrial and military cryptography

How practical are side-channel attacks and how much of a concern are they?

Fixed point of the SHA-256 compression function

What are recommended, general strategies to start block-cipher design and/or analysis?

What makes Quantum Cryptography secure?

Can a hard drive store clear text data that is physically impossible to retrieve?

How useful is NIST's Randomness Beacon for cryptographic use?

Desirable S-box properties

Choice of multiplication polynomial in Rijndael s-box affine mapping

Quantum complexity of LWE

Message-Recovery variant of Ed25519 signature?

Adding bit constants to the key schedule to reduce rounds?

How were one-time pads and keys historically generated?

Can we ensure the security of a crypto-algorithm and -implementaton against acoustic cryptanalysis?

Doubt about published test vectors for gimli hash

Space complexity of quantum collision search?

What is the difference between SHA-3(Keccak) and previous generation SHA algorithms?

What is the difference between SHA-3 and SHA-256?

How to evaluate chi squared result?

How small is negligible?

Collision resistance of hash function built on modular exponentiation

Historic Authentication Schemes Before Computers

AES cache-timing attacks and nonce-based operation modes

Which symmetric encryption systems, pseudorandom number generators, and hash functions are best suited for reversible computers?

Are there any security issues when replacing the SHA-256 initialisation values?

Why is pqRSA in the NIST PQC submissions?

Definitions of secrecy

Can the lengths of HTTPS requests be used to deduce which public pages on a site are visited?

What criteria make the theta step of Keccak's round function reversible?