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30/20 answers
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Jun
25
answered Derive cipher IV and cipher Key using PBKDF2 with random salt?
Jun
25
answered Using ECB as RSA encryption mode, but encrypted messages are unique
Jun
25
comment This paper was slid under my door and I dont know who else to ask if it has any meaning besides you guys
A not too well written note by somebody who's signature and humor is strongly underdeveloped. I would expect a juvenile.
Jun
23
comment what are the most common stream ciphers algorithms?
AES-CTR is certainly not a block cipher, poncho :P Maybe a block cipher mode of operation that turns the block cipher into a stream cipher. More constructively, we may want to include A5/1 but I guess it's unlikely to be the source of a ciphertext that has been found somewhere.
Jun
23
revised RSA with probable primes
added 1 character in body
Jun
22
awarded  Caucus
Jun
22
comment Is the HMAC construction really neccessary for a fixed length message?
@eBusiness Your previous comment could have been made without involving certain bodily parts - could you refrain from doing that?
Jun
21
answered SSH rekey security implications
Jun
21
comment Worst case one way function
This is probably just me not understanding the notation, but represents $f^{-1}$ all possible values if somebody does try to reverse the function?
Jun
21
revised Worst case one way function
edited title
Jun
21
comment What's the GCM-SHA 256 of a TLS protocol?
Thanks cpast didn't know that. I'll make sure I spell my questions correctly :)
Jun
21
comment What's the GCM-SHA 256 of a TLS protocol?
I created this answer because the existing answer doesn't explain that the PRF and GCM should be seen as separate entities. For a general rundown of the ciphersuite components I think Stephen is right to point to the relevant Q/A on the security site
Jun
21
comment What's the GCM-SHA 256 of a TLS protocol?
@StephenTouset Upvoted comment (and created answer with similar comment). Better use the share button on any question you want to point to though. If the title changes your link may become obsolete.
Jun
21
answered What's the GCM-SHA 256 of a TLS protocol?
Jun
21
comment What's the GCM-SHA 256 of a TLS protocol?
I'm sure that 6. is incorrect. Although the same hash function may also be used for the signature, I'm pretty sure that the acceptable hash algorithms are communicated differently (i.e. using extensions).
Jun
21
comment What is Polymorphic encryption?
+1 before the question closes. This however seems to be rather different than polymorphic encryption.
Jun
20
comment CMSS key sizes flexiprovider
" but in your paper these values are 46 and 1900 bytes" who's paper would that be?
Jun
20
comment How to show the inner workings of ECC?
It isn't really possible to "cipher" actual information using ECC (I'm presuming you mean encryption/decryption here). I would show how ECDH works and then explain that this can be used to encrypt data as well (through ECIES).
Jun
20
comment Turning a 64 bit block cipher into a 128 bit block cipher
@Seth Do I read this correctly? Could I do with a 2 round Feistel network to achieve a doubling of the block size, with the restriction that I should not use the block cipher for anything else?
Jun
19
comment Why are there only positive value points on an elliptic curve?
Ah sorry, I was wrongfooted by some of the comments.