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Security and Crypto Technologist


Sep
22
comment Checking the share membership in secret sharing schemes
@pg1989 the distinguishing ability may break some security if other parameters like $t,n$ are not made available etc. here we are only speeding up the process of identifying the membership
Sep
22
asked Checking the share membership in secret sharing schemes
Sep
22
comment Understanding Pseudo Random Generators
Check this video , good introduction with visualization usenix.org/conference/woot14/technical-sessions/presentation/…
Sep
21
answered Security properties and Cryptography objectives applied in algorithms
Sep
21
accepted Modes of operation for Public Key Encryption schemes
Sep
20
comment What is Attribute Based Encryption?
@DrLecter can u point me to the "recursive secret sharing" schemes you were saying above ?
Sep
20
comment Does Ciphertext policy ABE support search operation on encrypted data
In theory , ABE, PBE are further generalized as Functional encryption. So is your question whether FE (or its variants) could be used for Searchable encryption ? if then how ?
Sep
20
asked Modes of operation for Public Key Encryption schemes
Sep
19
comment Does Ciphertext policy ABE support search operation on encrypted data
It is not clear what you are asking. you may consider re-editing it. Are you asking if cp-abe supports searchable encryption by giving away appropriate keys ?
Sep
19
asked reducing false positives in searchable encryption
Sep
19
comment Authenticating Very Short (Sub-Block) Data
What if i dont want the tags for authentication and just the length preserving short block encryption is needed ? any suggestions apart from FPE techniques ?
Sep
14
asked Partial Homomorphic Schemes with padding
Sep
13
comment breaking fully homomorphic encryption schemes
will the cipher text probabilistic in general ?
Sep
11
comment Feistel cipher vs Substitution-permutation network - number of rounds
for feistel networks check "patarin's proof" , 7 rounds is what he proved to be good enough. i dont know about SPN
Sep
10
accepted Is this correct way to generate stream cipher using AES CTR mode?
Sep
10
accepted How to prove Security of Onion Layers of encryption?
Sep
10
answered How to prove Security of Onion Layers of encryption?
Sep
9
accepted breaking fully homomorphic encryption schemes
Sep
9
comment breaking fully homomorphic encryption schemes
Oh yeah , i missed this key insight that the result is also cipher text.
Sep
9
asked breaking fully homomorphic encryption schemes