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Jun
22
comment SQL-Like queries in CRYPTDB doesn't work
looks like they disabled LIKE queries in recent releases
Jun
16
comment Epsilon Differential privacy using Laplace distribution
Would recommend moving this question to data mining (stats.stackexchange.com) as it may get some appropriate audience. This is not really a cryptography question to help
Jun
12
comment Deriving 2 shared secrets from one private key and 2 different public keys
what does it mean by "derive 2 shared secrets , $d*Q_1$ ..." ? . Also looks like some text book problem ?
May
19
comment garbled circuit vs fully homomorphic encryption
In GC , are there really two separate steps to calculate garbled circuit and garbled input ? i believe they are done in one step ?
May
18
comment How to securely store data? / How to securely encrypt a file?
first , what is a keyfile ? is it a general file with cryptographic keys ? then why dont we just call it keys ?
May
18
comment What is the difference between online and offline brute force attacks?
Simplest explanation is , you got a dump of /etc/password file to try all possible passwords at machine in your basement (offline). The other being you keep trying bunch of default/popular passwords at the command prompt of the server (online) until u succeed
May
18
comment How to securely store data? / How to securely encrypt a file?
Ok. Also it is not clear the XORING of key files ?
May
17
comment How to securely store data? / How to securely encrypt a file?
Doing your own custom crypto is usually not so good advice . schneier.com/blog/archives/2015/05/amateurs_produc.html
May
17
comment How to securely store data? / How to securely encrypt a file?
"implement ur own PBKDF ?" or "HMAC" , not sure if its good idea ? definitely not
May
13
comment where should private and public keys be stored?
TPM's are the place to store secrets.
May
7
comment Defining format-preserving encryption for natural language
@fgrieu it is interesting to see this from steganography perspective. i did not thought that way before !
May
7
comment Defining format-preserving encryption for natural language
good point , now lets define a "natural language" ? and the "formats" to preserve ?
May
5
comment How difficult is homomorphic encryption?
very subjective and open ended question
May
1
comment What is the difference between various modes in FPE?
depends you need to pick on your requirements. you need greater range of lengths of formats or performance etc.
Apr
19
comment Attribute-based encryption for cloud storage
ABE scheme gives control over who can decrypt the ciphertext in the cloud (or any untrusted server) based on access policy (refer to KP-ABE , CP-ABE). Give us a reference of cloud storage to help you much better
Apr
9
comment Are there any noisy homomorphic encryption schemes?
Yeah fine by that, if the noise is not beyond $\epsilon$
Apr
8
comment Are there any noisy homomorphic encryption schemes?
@RickyDemer got it ! now the question left is whether there are natively noisy algorithms
Apr
8
comment Are there any noisy homomorphic encryption schemes?
@RickyDemer sorry i did not get you, can u be more clear ? what is a "just do it" construction ?
Apr
7
comment Why is a Feistel network not a type of substitution-permutation network?
Your question is not clear. A Feistel network could contain an SPN in its $f$ function but that is distinctly different from SPN itself
Apr
4
comment Epsilon Differential privacy using Laplace distribution
How did you prove individual mechanisms are preserver DP ? Why do you think you cannot prove the composition does not preserve ? give us more context to help you