302 reputation
311
bio website
location Singapore
age 23
visits member for 2 years, 5 months
seen 19 hours ago

20h
comment Reverse engineering a hash?
@Tangurena, You spent 2 hours breaking it?
20h
comment Reverse engineering a hash?
@JohnGietzen, Which FAQ are you talking about? crypto.stackexchange.com/faq?
20h
awarded  Informed
Nov
2
comment Why is H(k||x) not a secure MAC construction?
Isn't length extension attack only possible when the Hash algorithm itself is flawed?
Sep
24
awarded  Autobiographer
Jul
2
awarded  Curious
Jun
27
awarded  Notable Question
Jun
10
comment Algorithm: How to use x and y mouse movement co-ordinates to generate random data?
+1, Good point.
Jun
10
comment Algorithm: How to use x and y mouse movement co-ordinates to generate random data?
It may even be lesser than that, considering users usually draw circles or do zig-zag-zig-zag-zig-zag.
Jun
4
comment advances in usability for cryptography/authentication
The main weakness in everything is that people are involved.
Apr
4
comment Is it possible to ensure security with zero pre-shared information?
@RickyDemer.. ok, but that's just being overly picky on his words...
Apr
4
revised Is timestamping possible without publishing?
added 16 characters in body
Apr
4
asked Is timestamping possible without publishing?
Apr
4
comment Why use a timestamp and how can someone know it's the correct one?
Do you have some examples? All the statements above seem vague...
Apr
4
suggested suggested edit on Random oracle model proofs and programmability
Feb
15
comment “SHA-256” vs “any 256 bits of SHA-512”, which is more secure?
@fgrieu, Thanks for the info =)
Feb
14
comment “SHA-256” vs “any 256 bits of SHA-512”, which is more secure?
Hmm, does SHA-512/512 share the same initialization value as SHA-512/256?
Feb
12
comment “SHA-256” vs “any 256 bits of SHA-512”, which is more secure?
@fgrieu, What's the difference between 512/224 and SHA-512/256? Are they just different names for the same thing?
Feb
12
accepted How can we sign a contract digitally between two parties?
Feb
12
revised How can we sign a contract digitally between two parties?
added 164 characters in body