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otus
  • Member for 9 years, 6 months
  • Last seen more than 1 year ago
58 votes

Is secp256r1 more secure than secp256k1?

42 votes
Accepted

Are checksums essentially non-secure versions of cryptographic hashes?

34 votes
Accepted

Can Shannon's entropy be used to determine if a file is encrypted?

32 votes
Accepted

Can I remove newlines in a public key?

29 votes
Accepted

How to find modulus from a RSA public key?

28 votes
Accepted

Is HMAC needed for a SHA-3 based MAC?

25 votes
Accepted

What is the recommended number of iterations for Argon2?

24 votes

HMAC-SHA1 vs HMAC-SHA256

24 votes

Is it better to encrypt before compression or vice versa?

24 votes

What is the new attack on SHA-1 "SHAttered" and how does it work?

23 votes
Accepted

Does SHA-1024 hash exist?

23 votes
Accepted

How many qubits are required to break RSA 2048 or 4096 with a universal quantum computer?

21 votes
Accepted

Is it possible to recover the seed used by Python's pseudo-random number generator?

20 votes
Accepted

Perfect Forward Secrecy with NaCl

19 votes
Accepted

Where do Windows applications get entropy from?

18 votes

Did a certain cryptography method get abandoned due to security flaws in the past?

17 votes

Are there any practical ways to transfer random data securely?

16 votes
Accepted

What curve and key length to use in ECDSA?

15 votes
Accepted

Why should one prefer Salsa20 over ChaCha?

14 votes
Accepted

Is there an encryption format that preserves length and only outputs alphanumerics?

14 votes
Accepted

Is SipHash cryptographically secure?

14 votes
Accepted

Error propagation in CBC mode

14 votes
Accepted

Password entropy much lower than entropy of encryption keys. Why is this acceptable?

13 votes
Accepted

Why is it OK for secretbox to leak the message length?

13 votes
Accepted

Can double-encrypting be easier to break then either algorithm on its own?

12 votes
Accepted

What was the NSA's reasoning for making their bitwise combination functions in SHA-1 the way they did?

12 votes
Accepted

A patched SHA1 attempt for password verification

12 votes

Found a way to crack AES-128, what now?

12 votes

Why do Feistel ciphers need round keys?

11 votes

Why is plain-hash-then-encrypt not a secure MAC?

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