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Aug
24
comment Encryption of 8 bit of block data
It is totally insecure by any means.
Aug
17
comment how many pairs of plaintext-ciphertext are needed before we break AES?
so does this mean , we cannot infer the key in any reasonable amount of time ?
Aug
4
comment FFX Encryption over alphabet of arbitrary radix
I guess you are having the classic confusion stated in these questions crypto.stackexchange.com/questions/18741/… and crypto.stackexchange.com/questions/18611/…
Aug
4
comment FFX Encryption over alphabet of arbitrary radix
we just ignore the extra bits
Aug
4
comment FFX Encryption over alphabet of arbitrary radix
FFX is an unbalanced fiestel cipher .
Jul
25
comment Differential Privacy and appropriate noise distribution
I thought the second line "Random values .." answers the same. For detailed explanation please follow the excellent video link i gave
Jul
14
comment Partial Homomorphic Schemes that are probabilistic
yes @ChrisPeikert i spent some time and realized the same
Jul
7
comment Weakening of Pallier cryptosystem due to ciphertext equivalence and order in CryptDB
Ok this is an interesting reference, my hunch could be wrong too. Lets see if others have any answers. Initially was trying to see if we can deduct the random values $r_1,r_2$ by knowing their ciphertexts are equal but that seems not possible
Jul
7
comment different feistel words in key size
Give the reference of what you are reading to help you better
Jul
3
comment Easy explanation of “IND-” security notions?
possible duplicate of The difference between these 4 breaking Cipher techniques?
Jun
30
comment Partial Homomorphic Schemes that are probabilistic
i did not knew/checked Elgamal to be probabilistic , corrected the question now , thanks for detailed explanation !
Jun
29
comment Partial Homomorphic Schemes that are probabilistic
@ChrisPeikert can u give any reference paper on the impossibility result of CCA2 and Homomorphism ?
Jun
26
comment How close is homomorphic encryption to handling regular expressions?
There is some progress in blind folded regex matching using Secure Multiparty Computation techniques not sure if that would be useful for you
Jun
25
comment cipher text only attacks on deterministic homomorphic encryption schemes
Yes this is valid too.
Jun
25
comment cipher text only attacks on deterministic homomorphic encryption schemes
@VitorLima I dont have any reference but i added more explanation in the answer hope this helps.
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 ?