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I like crypto. Need I say more?


Nov
27
answered Learning cryptography using a FPGA
Nov
26
answered Is there an advantage to storing keys split between several hashes?
Nov
21
comment Is it safer to encrypt twice with RSA?
@Antimony, could you elaborate?
Nov
21
comment NIST Standard for Advanced Encryption Standard Algorithm
It looks like you question is answered in the post linked to by CodesInChaos. So, I'm going to close your question. If you feel this is incorrect, please update the question with more detail and flag it for moderator attention.
Nov
20
comment NIST Standard for Advanced Encryption Standard Algorithm
See NIST's report here: csrc.nist.gov/archive/aes/round2/r2report.pdf
Nov
19
answered Is this how padding can work?
Nov
19
comment Is there an authenticated encryption scheme where the recipient can attribute the message to a single sender?
I'm confused. You say you are looking for an asymmetric scheme but then say that the symmetric key would be shared. Is it asymmetric, symmetric, or are you looking for a combination?
Nov
19
comment Is it safer to encrypt twice with RSA?
Not true if you include padding. Also, the OP specifically says that $e$ is different.
Nov
16
revised Is it safer to encrypt twice with RSA?
added 260 characters in body
Nov
16
revised Is it safer to encrypt twice with RSA?
deleted 9 characters in body
Nov
16
comment Is it safer to encrypt twice with RSA?
@CodesInChaos, good point. I always seem to assume textbook RSA. Need to get all the intricacies of real RSA more firmly ingrained in my brain :)
Nov
16
comment Is it safer to encrypt twice with RSA?
@Psyberion, I've added some mathematical arguments given your update.
Nov
16
revised Is it safer to encrypt twice with RSA?
added 1308 characters in body
Nov
16
comment AES key padding
@CodesInChaos, right, that would be the proper way to do it (stackoverflow.com/questions/2501207/…)
Nov
16
comment AES key padding
One caveat here with HMAC, if you use a separate MAC key, the MAC could check out just fine and the decryption be incorrect. This would happen if say the MAC key is correct, but the decryption key is incorrect.
Nov
15
answered AES key padding
Nov
15
answered Is it safer to encrypt twice with RSA?
Nov
14
awarded  Custodian
Nov
14
reviewed Looks Good Can Pre-Paid Cards be cracked?
Nov
14
comment Efficient set up for a Montgomery multiplication
Bob and Jug, I know the purpose of montgomery multiplication. My point was, you only compute $R^2$ once if I understand things right. Then you can use it for all future computations.