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location Louisiana
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visits member for 1 year, 9 months
seen Aug 1 '12 at 20:34

I live in mud and eat dead stuff


Jul
13
comment Which of these 3 AES 128 symmetric encrypt/decrypt routines is most secure?
I didn't realize CCM meant using CBC as the MAC and CTR as the mode until just now. I primarily avoided CBC-then-MAC because of the padding issues. My impression is that CCM, GCM, and CBC-then-MAC are all secure though.
Jul
13
comment Which of these 3 AES 128 symmetric encrypt/decrypt routines is most secure?
Also any comment on the Padding oracle attacks?
Jul
13
comment Which of these 3 AES 128 symmetric encrypt/decrypt routines is most secure?
HMAC is implemented, but CCM is not, so I would have to combine them myself. I already wrote the encrypt/decrypt routines here in my more recent post. I just used an external library. Its currently in gcm but can be switched to ccm easily
Jul
13
comment Which of these 3 AES 128 symmetric encrypt/decrypt routines is most secure?
I'm using a 12 byte nonce randomly generated, so thats 2^96 possibilities. And the standard is a probability of collision less than 2^-32. So I believe that is a large enough margin that I may assume no IV will repeat. Given that, would you still go CCM?
Jul
13
answered Padding methods for block ciphers - PKCS7 vs ANSI X.923
Jul
13
asked How to communicate authentication tag for GCM?
Jul
12
awarded  Student
Jul
12
comment AES GCM implementation in c#
well at least question 1 is out of the way, thanks
Jul
12
accepted AES GCM implementation in c#
Jul
12
asked AES GCM implementation in c#
Jul
11
awarded  Scholar
Jul
11
accepted Which of these 3 AES 128 symmetric encrypt/decrypt routines is most secure?
Jul
11
comment Which of these 3 AES 128 symmetric encrypt/decrypt routines is most secure?
Thanks for the advice, I'll follow it
Jul
10
awarded  Editor
Jul
10
revised Which of these 3 AES 128 symmetric encrypt/decrypt routines is most secure?
added 15 characters in body
Jul
10
asked Which of these 3 AES 128 symmetric encrypt/decrypt routines is most secure?