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location Madrid, Spain
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visits member for 2 years
seen 6 hours ago

1d
accepted Post-quantum hybrid encryption
1d
asked Post-quantum hybrid encryption
Dec
19
awarded  Yearling
Nov
27
comment How to establish if a string contains a message
see here for some relevant reading...
Nov
10
comment Extending key sizes in Salsa20 and ChaCha?
@John - "So.. if you can extend the key size, without impacting performance, why not do it?" Because you're not a trained cryptographer and you may well end up making the algorithm weaker, not stronger.
Nov
9
comment Extending key sizes in Salsa20 and ChaCha?
"Is there something I'm not seeing here" ? Yes... extending the key beyond 256 bits is entirely redundant.
Nov
4
comment The use of the term “sound” in cryptography
Context and/or reference, please.
Sep
14
comment Hashing passwords
The first option should absolutely not be used. As for the second, see PBKDF2
Sep
2
comment Is MAC algorithm same at both sender and receiver end
Cursory research should answer your questions
Aug
28
comment Choice of authenticated encryption mode for whole messages
@Gilles - be sure to check out this article
Aug
25
comment Found a way to crack AES-128, what now?
@poncho - yeah I know... I'm not really taking this claim seriously.
Aug
25
comment Found a way to crack AES-128, what now?
Prove it. Algo = AES-128. Mode = CTR. Nonce (hex) = 9f22f26e4285f9cf69f19eabccde81c7. Ciphertext = 683a5a98232f31fe3580f0c5bb104a03e8acfd7e0cb763ae844858af48d929a28156f41f1c18a580‌​94. The plaintext is a simple sentence in English. The key you'll have to figure out for yourself... get back to us in 1-2 days? ;-)
Jul
21
comment Use AES-256 Or AES-CTR-256 For One Block?
@srgblnch - indeed.
Jul
19
comment OCB nonce usage
Thanks for the extra insight - it's appreciated.
Jul
18
comment OCB nonce usage
Ah - good catch! That simplifies matters.
Jul
18
accepted OCB nonce usage
Jul
18
asked OCB nonce usage
Jul
17
comment How long does it take to crack PBKDF2?
Have you done any prior research regarding this topic?
Jul
4
awarded  Popular Question
Jul
2
awarded  Curious