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Sep
22
revised Key management for military GPS receivers
fixed title's grammar
Sep
22
comment Perform general computation using a crypto algorithm as a building block
How basic are those features? $\;$
Sep
20
revised exchanging private key between service and iPhone app - digital signing
one more change to grammar
Sep
20
revised exchanging private key between service and iPhone app - digital signing
capitalized "i" and fixed spacing
Sep
19
comment Is it possible (how difficult) to find MORE than one valid RSA signature?
@CodesInChaos : $\:$ Alternatively, one can choose large prime public exponents. $\hspace{1.59 in}$
Sep
18
revised SHA-1 collision resistance
inserted apostrophe and capitalized authors' names
Sep
17
comment The difference between being not strongly collision resistant, and not weakly collision resistant?
One doesn't need a random oracle to get "Strong collision resistance implies weak collision resistance". $\;\;\;\;\;$
Sep
17
revised fuzzy commitment implemenation to make secure biometric template
fixed capitalization, fixed spacing around periods, and added comma to make actual question
Sep
16
revised Is Rabin's cryptosystem secure against known-plaintext attacks?
rephrased body to make it ask a question
Sep
16
awarded  Tumbleweed
Sep
15
comment Implementing a web app where the server cannot decrypt its own data?
@inxilpro : $\:$ Allow users to install an application if they wish, and list the SHA256 hashes of each version of that application. $\;\;\;\;$
Sep
15
comment Implementing a web app where the server cannot decrypt its own data?
@jfriend00 : $\:$ "This" is the part of the OP that comes after your quote. $\;\;\;\;$
Sep
14
comment Is appending the hash of the plaintext to the end of an encrypted message sufficient to ensure integrity?
No. $\:$ No. $\:$ Yes; the attacker might know the hash of the to-be-forged plaintext, without knowing the whole plaintext. $\;\;\;\;$
Sep
14
comment RSA-KEM construction
Only if the mode of operation has the type of security I described. $\;\;\;$ The KDF doesn't come in. $\hspace{.58 in}$ If length(C2) < length(C1) then send $\:$1 || [prefixfree](en.wikipedia.org/wiki/Prefix_code)(C2) || C1$\:$ else send $\:$0 || [prefixfree](en.wikipedia.org/wiki/Prefix_code)(C1) || C2$\;$. $\hspace{.28 in}$
Sep
14
comment Help to understand the chameleon hash function?
@Alex : $\:$ Identity-Based interactive key exchange can be built from identity-based signatures and [a PKE scheme that is allowed to use trusted public parameters]. $\;\;\;\;$
Sep
14
answered RSA-KEM construction
Sep
13
comment Does NTRU provide Perfect Forward Secrecy?
Note that there are subtleties involved in that. $\;$
Sep
13
comment Does NTRU provide Perfect Forward Secrecy?
What is "the long term channel"? $\;$
Sep
13
answered Why are we advising PKI if we know that quantum computers will break them?
Sep
12
comment Equal length of primes in paillier cryptosystem
One could compute $q$ as 1 more than [something-coprime-to-$p$ times something-smaller-than-$p$]. $\hspace{.48 in}$