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Jul
7
comment Convergent encryption has dictionary attack, but why hash function doesn't?
@otus, I think that hash function does have dictionary attack, but I cannot find any mentioning this. I did some research on the Internet, looking for related papers. However, nobody mentioned this drawback.
Jul
6
comment Convergent encryption has dictionary attack, but why hash function doesn't?
To the best of my knowledge, it seems that there is no solution currently for dictionary attack on deterministic hash function
Jul
6
asked Convergent encryption has dictionary attack, but why hash function doesn't?
Jul
3
comment constructing QR-like one way function
you are right, i made a mistake, all of the boave modulos are mod N, N is a composite
Jul
3
asked constructing QR-like one way function
Dec
15
asked Is this attack for RSA possible?
Dec
12
awarded  Student
Dec
10
comment inverse element in Paillier cryptosystem
So your idea is that we are still considering the problem of whether there exists a x such that ax=1 mod N, where a here is defined as r^n and N here is defined as n^2 in the Paillier system. Because we know a has the multiplicative inverse only when gcd(a,N)=1, it turns out we know that r^n has the multiplicative inverse only when gcd(r^n,n^2)=1.
Dec
9
asked inverse element in Paillier cryptosystem