Reputation
21,868
Next tag badge:
71/100 score
19/20 answers
Badges
3 36 91
Newest
 Nice Answer
Impact
~631k people reached

Jun
20
comment SQL-Like queries in CRYPTDB doesn't work
According to the CryptDB paper I linked to, they do, if you are doing keyword matching. Won't work for regex like searches though.
Jun
20
comment SQL-Like queries in CRYPTDB doesn't work
Also, you are likely better off asking about this on the cryptdb-users mailing list. Not that we don't want you on our site :) but I'm just trying to be honest with you.
Jun
20
comment SQL-Like queries in CRYPTDB doesn't work
Are you sure they support "LIKE". It was my understanding that CryptDB only supports a subset of SQL. UPDATE: Looks like they do support a subset of 'LIKE' (see page 5).
Jun
19
comment What is search space of this problem?
@SOJPM good call.
Jun
19
comment What is search space of this problem?
So you want us to help you cheat or does your professor allow you to solicit answers from random people on the internet?
Jun
18
comment 3DES over Galois Counter Mode (GCM) for authenticated encryption
Definitely don't use plain DES. Keyspace is too small.
Jun
17
comment Proof that two parties can communicate
@ricky that assumes some sort of setup though, right?
Jun
16
comment how does https key get shared?
I'm having trouble understanding why you posted this as an answer. It seems more like a comment. Unfortunately you don't have enough rep-points to post comments anywhere.
Jun
16
wiki
Jun
16
awarded  Caucus
Jun
13
comment secure multi party protocol for multiplication
Each of the 4 parties has an input? What adversary model? Any other particulars on the security guarantees that are needed?
Jun
13
comment Convolution and catastrophic codes
Also, it is unclear how the question directly relates to cryptography. Could you explain that too?
Jun
13
comment Convolution and catastrophic codes
you mean to tell me you've never seen a link change? Or a website disappear? either way a good question should be self containing.
Jun
12
comment Convolution and catastrophic codes
As it stands, your question is not stand alone. Someone would have to go fetch the paper you link to in order to understand it. This is no good as the paper could be removed. Please make your question more stand alone.
Jun
12
comment Join Datasets While Protecting Anonymity
SMC can also be used in an outsourcing model. The users' secret share their data and send a share to 3 or 4 cloud services, the cloud services then run the computation privately and send the result to you. If you are looking for a commercial offering, Sharemind might work.
Jun
12
comment Why are RSA ciphertexts different for the same plaintext?
@MaartenBodewes I knew I should have purchased a lotto ticket :)
Jun
12
comment Cryptanalysis and Copying encrypted volumes
Copying the container then modifying one will also leak which blocks were changed. So for example, say I make a copy, then open one of the containers and modify a text file and save it. The attacker now knows which block of ciphertext corresponds to the part of the text file I changed.
Jun
11
comment Why are RSA ciphertexts different for the same plaintext?
It is likely the standard OAEP which most libraries should implement.
Jun
11
comment Why are RSA ciphertexts different for the same plaintext?
N does not change. Likely the library is using padding. The padding is random, so the cipher text changes.
Jun
11
comment Join Datasets While Protecting Anonymity
One approach to solve this problem is functional encryption. Another approach is secure multiparty computation. They each have strengths and weaknesses, which, if I have time, I'll write up in an answer.