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  • 16 votes cast
Jul
13
awarded  Notable Question
Jun
17
awarded  Nice Question
Jun
17
awarded  Popular Question
Jun
16
accepted SHA512 faster than SHA256?
Jun
16
comment SHA512 faster than SHA256?
Thanks. But isn't the amount of calculations larger for SHA512? (Which is why I was surprised.)
Jun
16
comment SHA512 faster than SHA256?
Thanks. But isn't the amount of calculations larger for SHA512? (Which is why I was surprised.)
Jun
16
asked SHA512 faster than SHA256?
Apr
20
awarded  Notable Question
Apr
19
awarded  Notable Question
Dec
2
asked Repeating something encrypted and non-encrypted?
Jul
29
comment Is there a practical upper limit for password rehashing?
+1. Thanks.​​​​​​​​​​​​​​​​​​​​​​​​​
Jul
29
accepted Is there a practical upper limit for password rehashing?
Jul
9
asked Is there a practical upper limit for password rehashing?
Jul
2
awarded  Curious
May
22
awarded  Popular Question
May
4
awarded  Popular Question
Jan
30
awarded  Yearling
Jan
30
comment Best way to get 32 bytes from PBKDF2
Thanks. I understand the need for the final output to be a single output so that my second option is not so good. But why did you add the salt in the last step? Wouldn't $SHA256(tmp)$ be just as good?
Jan
30
asked How is HKDF-Expand better than a simple hash?
Jan
30
comment Derive both MAC and AES keys from same PBKDF2?
@CodesInChaos But anyway - as I wrote in my comments to my new question - now I don't understand why was HKDF-Expand invented at all (since one can simply use any hash). And also: You can convert your comments to answers, as they have been helpful and deserve upvotes. EDIT Thanks for the previous comment. I'll have to try that now.