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

11

answers

12k

views

Differences between industrial and military cryptography

encryption military-encryption

Oct 28 at 16:49 automatictester 383

31

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♦ 107k

30

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 10.7k

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

25

votes

4

answers

5k

views

What makes Quantum Cryptography secure?

key-exchange key-distribution quantum-key-distribution

Nov 15 at 6:08 fgrieu♦ 107k

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

22

votes

5

answers

7k

views

Desirable S-box properties

s-boxes

Jan 11 at 16:17 Community♦ 1

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

2

answers

2k

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

686

views

Quantum complexity of LWE

post-quantum-cryptography factoring complexity lattice-crypto

Jun 8 '18 at 14:28 floor cat 184

18

votes

1

answer

756

views

Message-Recovery variant of Ed25519 signature?

ed25519 message-recovery

Apr 17 at 12:07 Tobu 103

15

votes

0

answers

300

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 3,955

14

votes

2

answers

628

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 9,500

13

votes

0

answers

174

views

Space complexity of quantum collision search?

cryptanalysis collision-resistance reference-request quantum-cryptanalysis

Sep 8 '19 at 0:44 forest 10.7k

13

votes

2

answers

18k

views

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

sha-256 sha-3

Mar 30 '19 at 0:17 Community♦ 1

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

11

votes

3

answers

3k

views

How to evaluate chi squared result?

random-number-generator randomness

Mar 21 '19 at 17:06 Squeamish Ossifrage 41.9k

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

799

views

Collision resistance of hash function built on modular exponentiation

hash rsa collision-resistance

May 14 '18 at 13:42 Squeamish Ossifrage 41.9k

10

votes

2

answers

235

views

Historic Authentication Schemes Before Computers

authentication classical-cipher history

Feb 2 '18 at 20:01 Ella Rose 18.6k

10

votes

1

answer

306

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

312

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

474

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 3,005

9

votes

2

answers

3k

views

Definitions of secrecy

perfect-secrecy forward-secrecy

Sep 14 '18 at 5:34 Shan Chen 2,415

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

971

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?

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

Fixed point of the SHA-256 compression function

What makes Quantum Cryptography secure?

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

Desirable S-box properties

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

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 and SHA-256?

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

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?