Maarten Bodewes's user avatar
Maarten Bodewes's user avatar
Maarten Bodewes's user avatar
Maarten Bodewes
Moderator
  • Member for 12 years, 2 months
  • Last seen this week
  • Doggerland II
13 votes
Accepted

Why is Threefish not widely used?

2 votes
Accepted

Confusion over PKCS#1 and "traditional" options with OpenSSL

0 votes

Are there any papers talking about generating the pairs used in differential cryptanalysis or impossible differential Cryptanlysis?

0 votes
Accepted

best HMACSHA signed JWT secret length

2 votes
Accepted

Correct terminology for ECC in PGP

2 votes

Is a simple KMAC-128 or KMAC-256 hash secure as a KDF?

3 votes

argon2, is there a security cost to raising the parallelism too high?

20 votes
Accepted

Is openssl rand command cryptographically secure?

1 vote

How to generate random numbers within a range (0,n) from random bits?

5 votes

Is there a hash function that's more expensive for an attacker than for the server?

0 votes
Accepted

Understanding symmetric encryption security in relation to password-based key derivation

5 votes

Protecting against CPA for AES128/ECB by using padding

1 vote

Does Quantum Key Distribution (aka: QKD) qualify as "Cryptography"?

3 votes
Accepted

What is the recommended signature message padding for Ed448 in Bouncy Castle?

7 votes
Accepted

FIPS 186-4, Use of RSA key pair for Encryption and Signature

7 votes
Accepted

For password-based authenticated encryption is it OK to derive the auth key from the crypt key with 1 iteration?

5 votes
Accepted

Security Strength of Symmetric vs Asymmetric Ciphers

2 votes

Derive related universally unique identifier (UUID) from a main UUID

3 votes
Accepted

Significance of theoretical weaknesses?

3 votes
Accepted

Correlation between IV value and the output of a hash function

6 votes

Does using multiple hashes (to check if a file has been spoofed) reduce collisions?

1 vote
Accepted

Is it safe to encrypt a message with AES-ECB two times?

14 votes
Accepted

Why MACs are so important despite digital signatures doing everything a MAC can do and more?

1 vote
Accepted

Deriving private keys from a signature/HSM

5 votes

Lastpass PBKDF2 and salt

1 vote

Why is it impossible for asymetric ciphers to be stream ciphers?

7 votes

How strong are Bitlocker recovery keys?

2 votes

AES-GCM with HMAC

3 votes

AES vs. SHA2 in key-stream generation

2 votes

Is there any point in extending an 80-bit key before using it for HMAC-SHA256?

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