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Apr
22
revised Multiple AES/ECB encryptions of different data with same key all end with same pattern
rolled back to a previous revision
Apr
22
comment Can Grover's algorithm be parallelized?
It doesn't directly answer the question as you are not talking about doing p queries in parallel, but 1 query parallelized.
Apr
22
comment Can Grover's algorithm be parallelized?
I didn't dive deep enough to tell if this paper answers the question (Optimal Parallel Quantum Query Algorithms), but I found this interesting quote: "Suppose one wants to search an n-bit database, with the ability to do p queries in parallel in one time-step. An easy way to make use of this parallelism is to view the database as p databases of n/p bits each, and to run a separate copy of Grover’s algorithm on each of those."
Apr
22
comment Key distribution and computation for homomorphic encryption
@1010101 don't forget, if you find this answer helpful you can up vote it and even accept it (click on the check).
Apr
22
comment Key distribution and computation for homomorphic encryption
@101010, yes, that is correct.
Apr
22
comment Key distribution and computation for homomorphic encryption
@1010101 yes, you would likely encrypt database fields with some cipher. The decryption is carried out homomorphically. This is different from using the FHE decryption function.
Apr
22
comment Key distribution and computation for homomorphic encryption
@Dillinur very true.
Apr
22
comment Key distribution and computation for homomorphic encryption
@Dillinur but do they have the security history of AES?
Apr
22
comment Key distribution and computation for homomorphic encryption
@1010101 you are correct, though there are some tricks around this. Since FHE can evaluate any function, it can evaluate the AES decryption function. So, instead A can encrypt the database with AES, then encrypt the key with B's public key. B uses the encrypted key and the AES encrypted database to decrypt the database. The result of that decryption is not plaintext, however. It is the database encrypted with FHE.
Apr
22
revised Key distribution and computation for homomorphic encryption
added 899 characters in body
Apr
22
answered Key distribution and computation for homomorphic encryption
Apr
21
comment Cache Attacks on Cloud Infrastructures
Presumably it is because the guest vm can, by looking at timing values of writes, tell if a new page was created and the contents copied over.
Apr
21
comment Cache Attacks on Cloud Infrastructures
Also, how is they specifically about Cryptograph and not IT Security?
Apr
21
comment Cache Attacks on Cloud Infrastructures
You should add a link to the source of the statement.
Apr
21
reviewed Reviewed what are the NTRU keysize and application in industry ?
Apr
21
reviewed No Action Needed Under what conditions did a Bletchley bombe stop?
Apr
21
reviewed No Action Needed Known plaintext attack on 3 round SIMON block cipher
Apr
21
reviewed No Action Needed Rabin cryptosystem with 1 mod 4
Apr
21
reviewed No Action Needed Are there drawbacks to encrypting data locally before being encrypted in cloud backup (multiple encryption)?
Apr
21
reviewed Reviewed Are there drawbacks to encrypting data locally before being encrypted in cloud backup (multiple encryption)?