3,903 reputation
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location Wellington, New Zealand
age
visits member for 2 years, 10 months
seen 2 hours ago

I am an undergraduate computer science and mathematics student in New Zealand. My fields of interest are computer graphics, in particular the physics of light transport, and to some extent cryptography, as well as programming and software development in general.


Jan
23
awarded  Necromancer
Jan
22
comment How compared encryption algorithm in terms of efficiency
@almodawan No need to shout, it's an acronym.
Jan
22
reviewed Approve suggested edit on SHA-256 and AES-128
Jan
22
comment Two files encrypted with related data versus one file
Indeed, it is IND-CPA secure - I just wanted to clarify that point.
Jan
22
comment Two files encrypted with related data versus one file
"AES" is certainly not IND-CPA secure. A probabilistic encryption scheme such as CBC, CTR, OFB, .. is.
Jan
22
comment How compared encryption algorithm in terms of efficiency
No, there isn't. Big-O complexity is asymptotic - in addition to being an average - and is generally not accurate for realistic key sizes. In addition, some theoretically fast algorithms are terribly slow because they are not amenable to an efficient implementation, etc.. your best bet is to measure it, IMHO.
Jan
21
revised Using CBC with a fixed IV and a random first plaintext block
added 84 characters in body
Jan
21
reviewed Approve suggested edit on ANSI X9.31 standards for generating random numbers
Jan
21
reviewed Leave Open Finding a collision for a hash function
Jan
20
revised Do Quantum Key Distribution and Physical Unclonable Functions combine, and how?
edited tags
Jan
20
revised How does this Cesar Cipher work?
improved algorithms
Jan
20
revised How does this Cesar Cipher work?
added 151 characters in body
Jan
20
answered How does this Cesar Cipher work?
Jan
19
revised Is it safe to use RSA as a proof-of-work system?
deleted 465 characters in body
Jan
19
comment Is it safe to use RSA as a proof-of-work system?
re: last edit, in fact I suspect the client can compute the proof asymptotically just as fast as the server can as $k$ increases, making the scheme useless. I will update my answer as well as it is now misleading.
Jan
19
answered Using CBC with a fixed IV and a random first plaintext block
Jan
19
revised Is it safe to use RSA as a proof-of-work system?
fixed complexities
Jan
19
comment AES CBC mode or AES CTR mode recommended?
Please show some research effort in your questions.. and they can both be made just as secure if done right. They both have their pros and cons and target different uses.
Jan
19
comment Is it safe to use RSA as a proof-of-work system?
@D.W. Fixed, thank you.
Jan
19
revised Is it safe to use RSA as a proof-of-work system?
fixed error