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Jan
30
answered Using cryptographic hash to match AES key size
Jan
30
comment ASCII: weakness
Looks like this is basically ECB mode. Look up ECB mode weaknesses.
Jan
29
revised How to specify last $t$ bits are only sent when a signature is sent?
edited title
Jan
29
answered Does re-iterate AES128 with different keys gives any benefict?
Jan
29
revised Shamir's ID based signatures
deleted 31 characters in body
Jan
29
comment Shamir's ID based signatures
I'd suggest removing your PS and asking that as a new question.
Jan
29
answered Shamir's ID based signatures
Jan
27
comment Avoiding overflow when encrypting with RSA
What do you mean by overflow? The mod n ensures that the result will never be bigger than n
Jan
25
comment How can I find the prime numbers used in RSA?
@user11621 $N=p*q$ so, given $N$ and $p$, simply divide. If you mean you don't have a calculator that supports such large numbers, install python.
Jan
24
revised Shamir Secret Sharing Modular Reduction
added 555 characters in body
Jan
24
comment Shamir Secret Sharing Modular Reduction
@poncho, good point. I'll have to dive deeper into the protocol outlined in the paper I linked to see if it mitigates that.
Jan
24
revised Shamir Secret Sharing Modular Reduction
added 10 characters in body
Jan
24
revised Shamir Secret Sharing Modular Reduction
added 10 characters in body
Jan
24
answered Shamir Secret Sharing Modular Reduction
Jan
24
comment Secure degree reduction for Shamir's secret sharing
@user3225551 it should be in the referenced paper. That paper gives 2 MPC protocols. One in the honest-but-curious (semi-honest) model. That is the one that works as I described. The other is in the malicious model which is much more complicated. Their explanation of the multiplication step is just presented in a different manner. See also this.
Jan
24
comment Secure degree reduction for Shamir's secret sharing
Party 1 interpolates the subshares it holds and gets 3, party 2 does the same and gets 7, etc.
Jan
23
answered Secure degree reduction for Shamir's secret sharing
Jan
18
awarded  Enlightened
Jan
18
awarded  Nice Answer
Jan
17
comment Which is better ECDHE with TLS 1.0
I'm assuming you don't really want NULL as that means no confidentiality (in other words your data is sent unencrypted). I'd avoid RC4. As to what is left, what are your goals? How important is speed? In other words, what does "better" mean? Does your processor support AES-NI? Why only SHA and nothing from SHA2 family?