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22h
revised Are AES-256's related-key weaknesses exploitable if it is used to build a hash?
added 139 characters in body
Apr
13
revised knapsack wiki description
deleted 151 characters in body
Apr
5
revised Random oracle model proofs and programmability
Improve the title & question a bit.
Apr
4
revised Should we MAC-then-encrypt or encrypt-then-MAC?
added 448 characters in body
Apr
2
revised Combining multiple symmetric encryption algorithms - implications?
Address a typo spotted by Stephen Touset.
Mar
28
revised Is substitution with random prefix codes secure?
added 54 characters in body
Mar
22
revised Do any one-key-of-many cryptographic schemes exist?
added 83 characters in body
Mar
22
revised Do any one-key-of-many cryptographic schemes exist?
added 123 characters in body
Mar
21
revised Ensuring that an operation takes a relatively specific amount of time, but easily verify the result
added 150 characters in body; added 408 characters in body
Mar
21
revised Entropy when iterating cryptographic hash functions
Generalization the question to be generally useful, per comment thread.
Mar
19
revised Entropy when iterating cryptographic hash functions
incorporate comments from fgrieu
Mar
18
revised Subexponential algorithms for DLP in $\mathbb{Z}_s \times \mathbb{Z}_t$
Add elaboration from my comment.
Mar
14
revised Is this a pseudo random function (PRF)? F(k,x) = f(k,x) - f(k,x-1)
Address bug from @Seth.
Mar
13
revised Is this a pseudo random function (PRF)? F(k,x) = f(k,x) - f(k,x-1)
Clean up the question. Improve the latex. Eliminate unnecessary parenthesis, avoid gratuitous \big's. Generalize and focus the question slightly.
Mar
11
revised Private set intersection, using a semi-trusted server
Clarify that S* is computed locally.
Mar
2
revised If $G'(s)=G(s0^{|s|})$ and $G$ is a PRNG, is $G'$ necessarily a PRNG?
Fix typo.
Feb
21
revised Compared to GCM or XTS modes, how secure is H xor R1, E (R2, R1, Message) for confidentiality and integrity?
added 1561 characters in body
Feb
8
revised Generating Diffie-Hellman parameters efficiently
added 4 characters in body; added 84 characters in body
Feb
7
revised Generating Diffie-Hellman parameters efficiently
Improve title, tags, and grammar.
Feb
5
revised Practical (and secure) PRGs
added 93 characters in body