User e-sushi

12 votes

Accepted

Do I need to use a CSPRNG when creating salts for user accounts?

answered May 25, 2016 at 23:25

8 votes

Accepted

What is it meant by a "hybrid argument"?

answered Sep 6, 2013 at 15:22

11 votes

Desirable S-box properties

answered Sep 1, 2014 at 19:13

4 votes

Can someone give me an example of a Merkle–Damgård transformation?

answered Oct 25, 2017 at 7:09

11 votes

Accepted

What changed in PKCS#1 v2.2, and why?

answered Jul 28, 2013 at 4:43

5 votes

Frequency analysis of transposition ciphers

answered Apr 23, 2014 at 15:10

10 votes

How does one verify a GPG/PGP key revocation?

answered Jul 15, 2016 at 5:32

3 votes

Accepted

If you wrote a reversible SHA-256 algorithm, how many "metadata" bits would be required for reversability?

answered Nov 27, 2018 at 19:09

0 votes

Size of A Hashed String Using SHA-512

answered Nov 12, 2018 at 2:27

3 votes

Accepted

Decrypting SHA-512

answered Oct 4, 2018 at 3:13

4 votes

Is there a consensus on what text encoding to use when hashing a string?

answered Jul 21, 2018 at 5:27

1 vote

How can I create a stream cipher from a block cipher?

answered Jun 26, 2018 at 3:45

4 votes

Is it possible for a cryptographic algorithm to limit the number of times a package/ciphertext can be decrypted?

answered Jun 21, 2018 at 2:17

2 votes

How to interpret the article claiming NIST P-256 curve to be unsafe?

answered Jun 14, 2018 at 3:40

2 votes

Multiple Encryption - One-Time Pad

answered Jun 14, 2018 at 2:37

4 votes

Is it possible to crack a LFSR encrypted file without using bruteforce?

answered May 5, 2018 at 12:52

3 votes

Writing your own Encryption algorithm?

answered May 3, 2018 at 3:54

3 votes

FIPS 140-2, Level 1 validation vs. compilation

answered Apr 20, 2018 at 12:29

4 votes

How to attack RSA with 13 primes

answered Apr 17, 2018 at 11:30

16 votes

Do any non-US ciphers exist?

answered Aug 29, 2014 at 23:15

10 votes

Why is SHA3 prefixed with SHA despite the fact that it is structurally different from SHA2 and SHA1?

answered Mar 14, 2018 at 16:42

20 votes

Why is SHA-3 a Sponge function?

answered Mar 11, 2018 at 14:29

4 votes

What is an example of asymmetric cryptography?

answered Mar 12, 2018 at 11:34

1 vote

Anti-spamming hash-based proof-of-work?

answered Mar 10, 2018 at 0:01

0 votes

secretKey ⊕ (secretKey ≪ 1), is randomness lost?

answered Mar 1, 2018 at 18:46

4 votes

Best way to encrypt lots of private keys with the same passphrase

answered Mar 1, 2018 at 17:48

3 votes

Accepted

Is it generally considered acceptable for app owners to be able to retrieve private keys from users when their apps offer end-to-end encryption?

answered Feb 8, 2018 at 21:31

1 vote

Accepted

How does Naver Line PC client obtain private key for end-to-end encryption (letter-sealing)?

answered Feb 8, 2018 at 6:00

29 votes

Zero knowledge proof protocol example?

answered Dec 18, 2013 at 16:39

15 votes

Did non-military cryptography appear in the 50's and 60's only due to NSA leaks?

answered Nov 5, 2013 at 20:42

Stack Exchange Network

207 Answers

Do I need to use a CSPRNG when creating salts for user accounts?

What is it meant by a "hybrid argument"?

Desirable S-box properties

Can someone give me an example of a Merkle–Damgård transformation?

What changed in PKCS#1 v2.2, and why?

Frequency analysis of transposition ciphers

How does one verify a GPG/PGP key revocation?

If you wrote a reversible SHA-256 algorithm, how many "metadata" bits would be required for reversability?

Size of A Hashed String Using SHA-512

Decrypting SHA-512

Is there a consensus on what text encoding to use when hashing a string?

How can I create a stream cipher from a block cipher?

Is it possible for a cryptographic algorithm to limit the number of times a package/ciphertext can be decrypted?

How to interpret the article claiming NIST P-256 curve to be unsafe?

Multiple Encryption - One-Time Pad

Is it possible to crack a LFSR encrypted file without using bruteforce?

Writing your own Encryption algorithm?

FIPS 140-2, Level 1 validation vs. compilation

How to attack RSA with 13 primes

Do any non-US ciphers exist?

Why is SHA3 prefixed with SHA despite the fact that it is structurally different from SHA2 and SHA1?

Why is SHA-3 a Sponge function?

What is an example of asymmetric cryptography?

Anti-spamming hash-based proof-of-work?

secretKey ⊕ (secretKey ≪ 1), is randomness lost?

Best way to encrypt lots of private keys with the same passphrase

Is it generally considered acceptable for app owners to be able to retrieve private keys from users when their apps offer end-to-end encryption?

How does Naver Line PC client obtain private key for end-to-end encryption (letter-sealing)?

Zero knowledge proof protocol example?

Did non-military cryptography appear in the 50's and 60's only due to NSA leaks?