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Luis Casillas
  • Member for 6 years, 4 months
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0 votes
Accepted

What is the need of substitution and permutation networks in AES?

0 votes

Does the size of the cryptogram affect the possibility of breaking it?

1 vote
Accepted

Splitting an AES-256 key into two?

3 votes

Is it safe to say that a XOR with an unknown input provides a random output?

2 votes

Is there an encryption scheme that is url-safe AND compact?

3 votes

Is it possible to increase the encryption security of a short key?

1 vote

AES or One-time-pad for encrypting a single 128bit block?

1 vote

If you have two inputs of the same length, are there theoretically collissions in both MD5 and SHA-256?

1 vote

if a hash function has no known preimage attacks, does that mean there are no known attacks against using it in signatures?

2 votes

Application of cryptographic hash functions which do not require collision resistance property

4 votes
Accepted

Why is breaking the Blum Blum Shub PRNG not an undecidable problem?

2 votes

Are there any methods for constructing a password that can be reconstructed if forgotten and is as secure as randomly generated ones?

0 votes

Is a function defined as PRF with a given key a PRG?

4 votes
Accepted

The Rationale behind NIST's counter/LFSR recommendation on deterministic IV constructions on SP 800-38D

3 votes

What's wrong with NIST SP 800-90B?

1 vote

Are the GPS coordinates a good source of entropy?

2 votes

is it unsafe to AES encrypt using multiple modes?

3 votes
Accepted

What are the benefits of using AEAD algorithms as MAC

0 votes

How to construct a prg?

36 votes

Can I encrypt a message by swapping bits in the text?

1 vote

Why is it secure to reuse key and nonce in ChaCha20-Poly1305 AEAD construction?

2 votes
Accepted

What is the difference between a PRF and a PRP, and are cryptographic hash functions the same as HMAC (PRFs or PRPS)?

1 vote

Seed/key algorithm security

0 votes

Why doesn't TLS provide E2EE?

7 votes

What happened to Poly1305AES? Is it obsolete?

1 vote
Accepted

Why can a symmetric encryption algorithm be considered a pseudo-random number generation algorithm?

7 votes
Accepted

How random are permutations generated from Feistel networks with a small number of rounds?

1 vote

Is Salsa20+Poly1305 an AEAD?

5 votes
Accepted

Which is the best algorithm for large scale file encryption other than AES?

4 votes
Accepted

Is it safe to convert a 256-bit nonce into a 192-bit nonce by SHA-256ing and then truncating it?

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