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 Yearling
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Nov
7
comment Why do cryptographic hashes need to be fixed length?
@otus you are right.
Nov
6
answered Why do cryptographic hashes need to be fixed length?
Sep
5
comment SHA-256 Reversing A String of Equal Length
I was just going to say that. Here's a link: en.wikipedia.org/wiki/SHA-2#Pseudocode. But note that the function is not invertible.
Sep
5
revised Two rounds of SHA-256 HMAC?
don't shout
Sep
5
comment SHA-256 Reversing A String of Equal Length
@will it's a Merkle-Damgård construction, basically what they do is running the input several times through a compression function. See the SHA-2 wiki under "Hash standard" or the Merkle-Damgård wiki.
Sep
5
suggested approved edit on Two rounds of SHA-256 HMAC?
Sep
5
answered SHA-256 Reversing A String of Equal Length
Sep
1
awarded  Yearling
Sep
1
revised Is there a secure source of entropy on a typical microcontroller?
added 826 characters in body
Aug
4
comment Is there a secure source of entropy on a typical microcontroller?
@RickyDemer thanks.
Aug
4
revised Is there a secure source of entropy on a typical microcontroller?
added 35 characters in body
Aug
3
answered Is there a secure source of entropy on a typical microcontroller?
Jun
22
awarded  Caucus
Jun
22
awarded  Constituent
Jun
14
comment Doubling a point on an elliptic curve
Yep, that worked. We also just received a mail that they didn't mean to put a long Weierstrass curve in the assignment... but anyway, thanks a lot!
Jun
14
awarded  Scholar
Jun
14
accepted Doubling a point on an elliptic curve
Jun
14
revised Doubling a point on an elliptic curve
added 92 characters in body
Jun
14
asked Doubling a point on an elliptic curve
Mar
2
awarded  Critic