Tagged Questions
0
votes
0answers
40 views
SRP6a client server exchanged message order
In SRP6a, the public key of server is send after receiving the public key of client A. Its that okay that B send along together with s right after client send the username, and then later on client ...
1
vote
0answers
99 views
Sigma-protocol for 3SAT problem
I have some questions from previous years exams, I hope you could help me with them. :)
Let $g,h$ denote generators of a group $G$ of large prime order $n$ such that $\log_g h$ is unknown to anyone. ...
2
votes
0answers
97 views
Transforming simplest protocol into a Sigma-protocol
I have some questions from previous years exams, I hope you could help me with them. :)
Suppose that a protocol satisfies the properties of a $\Sigma$-protocol, except that it is only (plain) ...
1
vote
1answer
94 views
Is secure remote snap possible?
Scenario:
We have a central server $S$.
We have a number of peripheral servers $P_i$
We have some individuals $U_j$
A given individual may be "known" to one or more peripheral servers. Each ...
5
votes
2answers
181 views
What is a “rewinding argument”?
I've been reading a bit about cryptographic protocols and I keep seeing the phrase "rewinding argument". I've been unable to find a good source that would explain what is meant by this. It seems like ...
4
votes
1answer
211 views
Why does SRP-6a use k = H(N, g) instead of the k = 3 in SRP-6?
I've been reading up on the Secure Remote Pasword protocol (SRP). There are a couple different versions of the protocol (the original published version being designated SRP-3, with two subsequent ...
