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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
15
reviewed Approve Does the plaintext have to be at least as long as the key in Polyalphabetic substituion cipher
May
15
awarded  Popular Question
May
13
comment where should private and public keys be stored?
TPM's are the place to store secrets.
May
7
comment Special case of format-preserving encryption
@fgrieu it is interesting to see this from steganography perspective. i did not thought that way before !
May
7
revised Special case of format-preserving encryption
added 161 characters in body
May
7
comment Special case of format-preserving encryption
good point , now lets define a "natural language" ? and the "formats" to preserve ?
May
6
answered Special case of format-preserving encryption
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
26
reviewed Approve If you hashed a hash an infinite number of times would you end up with a unique hash?
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
accepted Cipher text only attacks on deterministic fully homomorphic encryption schemes
Apr
9
reviewed Approve Cipher text only attacks on deterministic fully homomorphic encryption schemes
Apr
9
asked Cipher text only attacks on deterministic fully homomorphic encryption schemes