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14h
asked Encrypt a file for random access but only after an initial read of the whole file
15h
accepted Bouncy Castle and Salsa 20
15h
answered Bouncy Castle and Salsa 20
Oct
14
comment Bouncy Castle and Salsa 20
@owlstead I've looked already into the sources and it looks fine (for a non-cryptographer). It was the lack of checking of anything what made me to ask as passing any nonsense worked, too. I'll probably edit out the code as suggested and turn it into a regular question for here.
Oct
13
comment Bouncy Castle and Salsa 20
@Nova I know SO pretty well. I know, there are Java experts there, but I do know myself enough. But the documentation is lacking at best and the interface allows about every nonsense you can think of. BC has a mailing list, I'm giving it a try.
Oct
13
comment Bouncy Castle and Salsa 20
@Nova OK, BC forum sounds good. Java forum is non-sense, as most people there know close to nothing about crypto and the few who just do don't come along.
Oct
13
revised Bouncy Castle and Salsa 20
added 469 characters in body
Oct
13
comment Bouncy Castle and Salsa 20
@ddddavidee How is it different from e.g. this one or this one? I just didn't ask explicitly about what key derivation algorithm should I use, etc., but the question is there. And assuming it's not appropriate here, where should it be? Buddhism? Pets? Just don't say SO or CR, as the kind of knowledge I need is not there.
Oct
13
comment Bouncy Castle and Salsa 20
Downvoter, feel free to add an answer. If the code is crap... well, then I'm right as I expected it.
Oct
13
asked Bouncy Castle and Salsa 20
Mar
7
awarded  Yearling
Jan
16
comment Keyed-hash of a lot of small numbers
I'm definitely no expert here, but couldn't a stream cipher encrypted data be used instead of both (storing the data twice makes no sense to me)?
Nov
12
answered How does secret sharing solve the partial exposure problem?
Nov
11
accepted How can two (or more) parties share and agree upon a common random seed?
Nov
11
comment How can two (or more) parties share and agree upon a common random seed?
@nightcracker: I was thinking about generating large random numbers, as cutting them is trivial and they may be useful when the requirements change. And I was thinking about seeding Salsa20 where 256 bits fit perfectly (as the key).
Nov
10
asked How can two (or more) parties share and agree upon a common random seed?
Oct
18
awarded  Scholar
Oct
18
comment Encryption of small messages
I was actually interested in a length preserving encyption, but I failed to state it, and your answer is interesting, too. Thanks.
Oct
18
accepted Encryption of small messages
Oct
18
comment Encryption of small messages
@Thomas Pornin: I didn't say that I wanted a length preserving encryption, but you understood it well. Thanks for the perfect answer.