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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
Mar
31
comment How does this Cryptowall v3 working to encrypt the file?
blogs.cisco.com/security/talos/cryptowall-3-0
Mar
26
comment Can machine learning analyze random number generator?
I have had this question myself from many months, eager to hear some one answering this !
Mar
6
comment Is there a format preserving cryptographically secure hash?
If hash preserves the length of the original string then it is just a permutation (like block cipher). Use a FPE algorithm to encrypt the input and throw the key, consider the ciphertext as your hash !
Feb
5
comment Generating cyclic group for Ciphertext-Policy Attribute-Based Encryption
we have used this charm-crypto.com/Main.html but it is written in python.
Jan
8
comment Encryption for a short packet size
Its based on fiestel networks which is very well studied in theory. the original paper was written some twenty years ago. ofcourse independent cryptanalysis is not yet done by anyone
Jan
6
comment Encryption for a short packet size
github.com/cisco/libfnr will this help ?
Jan
3
comment what is it called when encrypt('a') + encrypt('a') == encrypt('aa')?
They are applied in general too. It is called "Partially Homomorphic Encryption" to be precise !
Jan
2
comment Can we quantify strength of encryption scheme ?
@JohnMeacham that would be too subjective, who qualifies to be schneier ? how would you experimentally verify such units ?
Dec
4
comment Using machine-learning techniques for data-dependent operations in ciphers
there are plenty , just search for "cryptanalysis genetic algorithms" on scholar.google.com
Dec
4
comment Using machine-learning techniques for data-dependent operations in ciphers
Yes There are few papers using genetic algorithms but i would be very curious to know others
Dec
1
comment Implementing a pseudo random function in practice
AES-128 also considered good PRF
Nov
16
comment Secure symmetric encryption algorithm for any-size base62 data
are you looking for format preserving encryption ?
Nov
7
comment Can we give access to controlled functionality in Fully homomorphic encryption schemes?
the question was about controlled functionality for FHE but not FE
Nov
6
comment What is the most computationally efficient way of generating pseudo-random permutations?
If security is not a major concern , vanilla feistel network with AES-NI as PRF , with 6 rounds would be good enough thank FFX modes