User Q-Club

76 votes

4 answers

11k views

How come Public key cryptography wasn't discovered earlier?

pls no

919

asked May 25, 2018 at 9:03

41 votes

12 answers

13k views

Differences between industrial and military cryptography

encryption military-encryption

R1w

1,866

asked Sep 20, 2018 at 9:32

34 votes

2 answers

5k views

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

cryptanalysis block-cipher algorithm-design

SEJPM

44.7k

asked Sep 5, 2016 at 19:49

33 votes

3 answers

8k views

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

cryptanalysis side-channel-attack

mikeazo

37.8k

asked Sep 11, 2012 at 21:11

31 votes

2 answers

8k views

Fixed point of the SHA-256 compression function

collision-resistance sha-256

Nathan.Mariels

319

asked Jun 24, 2017 at 10:32

30 votes

2 answers

44k views

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

sha-256 sha-3

Ced

435

asked Mar 26, 2019 at 13:59

26 votes

4 answers

6k views

What makes Quantum Cryptography secure?

key-exchange key-distribution quantum-key-distribution

lal lal

373

asked Sep 5, 2017 at 1:46

25 votes

5 answers

7k views

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

keys cryptographic-hardware

einstein

411

asked Feb 6, 2018 at 20:59

24 votes

5 answers

4k views

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

randomness standards nist timestamping

user3461497

351

asked Mar 25, 2014 at 21:35

23 votes

5 answers

8k views

Desirable S-box properties

s-boxes

Polynomial

3,367

asked Nov 23, 2011 at 14:05

21 votes

2 answers

2k views

Choice of multiplication polynomial in Rijndael s-box affine mapping

aes finite-field s-boxes rijndael

Richie Frame

12.7k

asked Jun 29, 2014 at 12:29

20 votes

2 answers

1k views

How were one-time pads and keys historically generated?

one-time-pad classical-cipher history

Mark

785

asked Feb 2, 2018 at 19:16

19 votes

1 answer

846 views

Quantum complexity of LWE

post-quantum-cryptography factoring complexity lattice-crypto

Rick

1,225

asked Jun 20, 2016 at 18:37

18 votes

0 answers

400 views

Adding bit constants to the key schedule to reduce rounds?

reference-request lfsr feistel-network differential-analysis

b degnan

4,244

asked Jun 12, 2018 at 1:07

18 votes

1 answer

931 views

Message-Recovery variant of Ed25519 signature?

ed25519 message-recovery

fgrieu♦

125k

asked Sep 27, 2016 at 8:32

15 votes

1 answer

1k views

Doubt about published test vectors for gimli hash

hash test-vectors gimli

gammatester

1,015

asked Aug 21, 2017 at 18:40

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

e-sushi

17.4k

asked Dec 21, 2013 at 7:28

13 votes

0 answers

211 views

Space complexity of quantum collision search?

cryptanalysis collision-resistance reference-request quantum-cryptanalysis

user991

asked May 15, 2014 at 18:36

12 votes

3 answers

2k views

How small is negligible?

security-definition negligible

Rexcirus

313

asked Aug 24, 2018 at 20:46

12 votes

3 answers

11k views

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

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

prakharjain

303

asked Feb 4, 2016 at 15:48

12 votes

2 answers

1k views

Why is pqRSA in the NIST PQC submissions?

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

forest♦

13.5k

asked May 28, 2018 at 2:08

11 votes

1 answer

1k views

Collision resistance of hash function built on modular exponentiation

hash rsa collision-resistance

chelsea

394

asked Nov 5, 2017 at 14:45

11 votes

3 answers

4k views

How to evaluate chi squared result?

random-number-generator randomness

valerio_new

268

asked Mar 29, 2018 at 11:08

11 votes

2 answers

4k views

SHAKE-128/256 or SHA3-256/512

encryption sha-3

Alejandro Martinez

121

asked May 15, 2019 at 18:36

10 votes

1 answer

386 views

AES cache-timing attacks and nonce-based operation modes

aes gcm timing-attack ccm

Raoul722

2,694

asked Feb 23, 2018 at 10:38

10 votes

2 answers

349 views

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

encryption hash pseudo-random-generator

Joseph Van Name

708

asked Feb 14, 2018 at 18:21

10 votes

2 answers

256 views

Historic Authentication Schemes Before Computers

authentication classical-cipher history

jupystan

101

asked Dec 10, 2015 at 18:53

10 votes

2 answers

6k views

Definitions of secrecy

security-definition perfect-secrecy forward-secrecy

M-elman

1,158

asked Sep 3, 2016 at 15:55

9 votes

2 answers

613 views

Functional difference between stream cipher, XOF, seed expander, KDF, etc

hash stream-cipher terminology xof

DannyNiu

6,795

asked Feb 8, 2018 at 4:09

9 votes

4 answers

3k views

Lightweight cipher using only 8-bit operations

encryption performance lightweight embedded

forest♦

13.5k

asked Feb 22, 2018 at 23:44

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How come Public key cryptography wasn't discovered earlier?

Differences between industrial and military cryptography

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

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

Fixed point of the SHA-256 compression function

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

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

How were one-time pads and keys historically generated?

Quantum complexity of LWE

Adding bit constants to the key schedule to reduce rounds?

Message-Recovery variant of Ed25519 signature?

Doubt about published test vectors for gimli hash

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

Space complexity of quantum collision search?

How small is negligible?

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

Why is pqRSA in the NIST PQC submissions?

Collision resistance of hash function built on modular exponentiation

How to evaluate chi squared result?

SHAKE-128/256 or SHA3-256/512

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?

Historic Authentication Schemes Before Computers

Definitions of secrecy

Functional difference between stream cipher, XOF, seed expander, KDF, etc

Lightweight cipher using only 8-bit operations