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Newest
 Revival
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Jun
29
revised How to select parameters based on some condition
polish, fix ob1
Jun
29
revised How to select parameters based on some condition
polish
Jun
29
answered How to select parameters based on some condition
Jun
26
revised bcrypt - collision-resistance against chosen salt and work factor?
Clarify what input is
Jun
25
revised Why is HMAC-SHA1 still considered secure?
Detail what it would take to break SHA-1
Jun
25
revised Why is HMAC-SHA1 still considered secure?
polish
Jun
25
comment RC6 and Serpent ciphers assembly reference
"Assembly reference" is a Microsoft-specific concept that has nothing to do with cryptography; and, whatever it is, it being missing is common.
Jun
25
comment what are the most common stream ciphers algorithms?
I think you mean Salsa20 (a family of 3 stream ciphers Salsa20/8, Salsa20/12, Salsa20/20) rather than ChaCha20 (the 20-round version of ChaCha), since ChaCha was published in 2008.
Jun
25
revised Why is HMAC-SHA1 still considered secure?
polish
Jun
25
revised Why is HMAC-SHA1 still considered secure?
polish
Jun
25
revised Why is HMAC-SHA1 still considered secure?
Answer "when should SHA-1 not be used?"
Jun
25
answered Why is HMAC-SHA1 still considered secure?
Jun
25
comment Why is HMAC-SHA1 still considered secure?
There seems to be a confusion in the question: HMAC-SHA1 is not used for signing a document (at least, not usually; and assuming it was, the standard assumption for HMAC that its key input is secret can't hold since the signature verification procedure is public). I find that answer quite fine.
Jun
25
comment Program to generate a secure 128 bit key on a windows machine
Recommendations for code, especially executable, are off-topic. Beside,in crypto, "trustworthy executable" tends to be one you compile on a trusted machine (which nowadays is in itself a hard-to-rationally-justify act of faith), or received in person from a person that you trust.
Jun
25
comment Implementing AES MixColumns with fewest XOR gates
@RFuentess: AES decryption is much less common than AES encryption, because AES tends to be used in CTR mode (sometime OFB or CFB, and for authentication CBC-MAC) which all use AES encryption only (including during decryption); not coincidentally, AES decryption is unavoidably slower and bigger than encryption. That likely explains why AES decryption was not coded. $\;$ I'm not the author or otherwise related to the nice code that I linked to; I only highly recommend it as the theoretical basis of a compact 8-bit implementation.
Jun
24
awarded  Revival
Jun
24
revised Device intercommunication with commands
Clarify
Jun
24
answered Device intercommunication with commands
Jun
24
awarded  Necromancer
Jun
24
revised Are factorization algorithms parallelizable?
Get the numbers right in high-end HW