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Security and Crypto Enthusiast


May
16
comment Is Functional Encryption about Access Control over encrypted data alone?
in a way you are correct, prima facie there aren't any connections. but if we dig deeper, both allow some kind of function evaluation over encrypted data which is key, FE does not give output privacy where as FHE gives that is difference, if we find connections may be we can find better FHE solutions , because there are successful methods already in FE
May
16
comment Is Functional Encryption about Access Control over encrypted data alone?
search for a paper " on connections between FE and FHE".
May
16
comment Is Functional Encryption about Access Control over encrypted data alone?
in a way yes , am mixing it with FHE , as there are possible connections
May
11
comment How to do a literature search
This may be made a generic question and moved to academic.se ? for greater good ?
May
9
comment What kind of adversary is the cloud?
not it is not silly, you never know , how much google/amazon are making of use of customers data for monetizing etc, if not attack their own customers, even this would be threat for a customer
Apr
23
comment Can we construct fully homomorphic encryption scheme based on non-circuit approach?
@ZhigangChen thanks a lot for clarifying the difference, i almost missed it !
Apr
22
comment Connections between Instance Hiding and Fully Homomorphic Encryption
Eval(y,f) in reality means to f(y) , Eval method is purely coined for definitional purposes, in reality, Bob computes f(y), in both AFK and FHE. To be more clear check the hcrypt project, notice that there is no Eval method the add and multi method only exists hcrypt.com/scarab-library, Eval is purely for definitional issues
Apr
22
comment Connections between Instance Hiding and Fully Homomorphic Encryption
To answer this please check the question, i have edited it for more clarity. In FHE, too we ultimately build any function from basic functions like add and multi,
Apr
20
comment How to construct encrypted functions (with either public or private data)?
A paper "towards mobile cryptography" by Sander, Tschudin has some details on "computing with encrypted functions"
Apr
20
comment Should I trust CipherCloud?
any chances they would kill this thread too ?
Apr
20
comment Cryptographical formalization of computational privacy
@mikeazo , finally i got the paper , search for "secure circuit evaluation" by Abadi, Fiegenbaum , page no 5 , second paragraph, although i did not get it how , let me know if you understand it
Apr
16
comment How to construct encrypted functions (with either public or private data)?
even if the party with decrypting key is involved, how is such computation of encrypted function carried out without decrypting the function ?
Apr
15
comment Encrypted Functions with Fully Homomorphic Encryption
oops forgot to check first before asking , thanks anyway !
Mar
23
comment Security of Deterministic Encryption Scheme
thanks would check out those papers, in an imaginary application if the client searches for all the possible words the server has, do you think searchable encryption would have advantage over Deterministic encryption ?
Mar
21
comment Security of Deterministic Encryption Scheme
Yes the message structure should ensure the uniqueness , but what if we don't have much choice there ? what is the best possible thing that can be done if we cannot avoid DE or high entropy ?
Mar
20
comment Security of Deterministic Encryption Scheme
no i cannot go for probabilistic encryption, my application needs to be able to perform search over cipher text
Mar
6
comment Zero-Knowledge Challenge-Responce Protocol
have you checked heliosvoting.org ? they use partial homomorphic techniques
Mar
4
comment Are there any practical implementation of a homomorphic hashing or signature scheme?
@D.W. not all schemes would be implemented or implementable. only the ones that are practical would have been implemented. I have done thorough search before asking on whether there is practical scheme.
Mar
4
comment Are there any practical implementation of a homomorphic hashing or signature scheme?
@PaĆ­loEbermann your edit helped
Feb
28
comment Are there any practical implementation of a homomorphic hashing or signature scheme?
I know i can do it myself if it was research references, i am not a noob , i have been good community player and good netizen while asking questions, my question was precisely on a library or platform which implemented these techniques , which got distorted by edits , i could not find myself the library through google . thts reason i have posted the question, am NOT looking for research references