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fadedbee
  • Member for 9 years, 9 months
  • Last seen more than a month ago
19 votes
2 answers
11k views

Deterministically generate a RSA public/private key pair from a passphrase (with sufficient entropy)?

14 votes
2 answers
3k views

Encrypt-then-MAC: Do I need to authenticate the IV?

2 votes
1 answer
3k views

ECDSA for encryption

3 votes
3 answers
3k views

Any weakness when performing SHA-256 repeatedly? [duplicate]

0 votes
1 answer
2k views

Keeping the key and IV safe when AES256 encrypting publicly known data

5 votes
1 answer
2k views

Do aes_256_gcm IVs just need to be unique for that key?

6 votes
2 answers
2k views

Are curve secp256k1 ECDSA signatures distinguishable from random data?

2 votes
2 answers
2k views

Is there a relationship between the secp256k1 public key of the sum of two private keys, and the public keys of those original two private keys?

1 vote
1 answer
2k views

How to find the secret key and nonce from two messages encrypted using the same nonce?

3 votes
1 answer
1k views

Is there a standard for public key encrypting and signing short messages?

2 votes
2 answers
1k views

Is there a form of AES encryption where the cipher text matches the length of the clear text and does not show patterns?

3 votes
2 answers
1k views

Is it safe to XOR-combine hashes by rotating them first?

5 votes
2 answers
1k views

Why is ECIES complex?

1 vote
1 answer
1k views

What is best practise for salting and multiple-hashing of passwords?

1 vote
1 answer
1k views

Is the result of HMAC-sha256 distinguishable from random noise?

1 vote
2 answers
889 views

Need for secure hash function for a bloom filter

1 vote
2 answers
861 views

Does the Blake3 hash have identities, due to its merkle tree structure?

1 vote
0 answers
860 views

AES256-GCM Is it safe to both add the IV to the AAD and use it in the encryption?

0 votes
1 answer
809 views

If you know the messages, and the results of HMAC(key, message) can you find the key?

4 votes
2 answers
762 views

Why/how is libsodium/nacl's cryptobox repudiable?

3 votes
1 answer
615 views

Elliptic curves on finite fields

4 votes
2 answers
608 views

Cryptographically strong seeded pseudo random number generator

1 vote
1 answer
479 views

AES-128 or AES-256 with 18 bytes of key storage?

2 votes
1 answer
433 views

Do some Block Cipher Modes encrypt the nonce and then XOR it with the data?

3 votes
3 answers
391 views

Can you create an encryption algorithm from a signing algorithm, or vice versa?

0 votes
1 answer
321 views

How to use OpenSSL to prove non-repudiation

1 vote
3 answers
312 views

Using sha3 as a deterministic source of psuedo-random bytes for xor encryption

3 votes
1 answer
272 views

Does ECDH on secp256k produce a defined shared secret for two key pairs, or is it implementation defined?

1 vote
2 answers
260 views

Is it safe to sign message with a TLS private key?

2 votes
1 answer
239 views

What is the maths behind Bitcoin's BIP32?