4,489 reputation
1720
bio website people.scs.carleton.ca/~clark
location Ottawa, Canada
age 32
visits member for 1 year, 10 months
seen May 16 at 13:24
stats profile views 103

Postdoctoral fellow interested in authentication and cryptographic voting.


Mar
7
answered RSA-OAEP versus RSA with Fujisaki-Okamoto construction
Feb
22
revised Threshold Signatures for RSA and DSA
added 220 characters in body
Feb
15
revised Is there some way to generate a non-predictable random number in a decentralised network?
added 17 characters in body
Feb
15
answered Is there some way to generate a non-predictable random number in a decentralised network?
Feb
14
comment Threshold Signatures for RSA and DSA
Thanks. I am thinking of an offline/infrequent signing scenario like issuing SSL/TLS certificates, transaction signing in Bitcoin, code signing in Android, etc.
Feb
14
comment Threshold Signatures for RSA and DSA
Thanks. That gives the secret sharing / reconstruction portion. I think the challenge with RSA is more in distributively generating a proper $n$ and $\phi{n}$ without anyone learning $p$ and $q$.
Feb
13
asked Threshold Signatures for RSA and DSA
Feb
3
comment What type of hash functions provides non-malleability of hash digests?
I think so. It is sort of a deterministic version of $\mathcal{H}(r\|\mathcal{H}(m))$ or $\mathcal{H}(r_2\|\mathcal{H}(r_1\|m))$ which have been studied in designing message authentication codes. Once again, it isn't provably non-malleable, but in practice should eliminate the length-extension attack.
Feb
3
comment Why RSA encryption key is based on modulo(phi(n)) rather than modulo n
Thanks. I see why it was incorrect before.
Feb
2
revised commitments wiki description
added 658 characters in body
Feb
2
suggested suggested edit on commitments tag wiki excerpt
Feb
2
suggested suggested edit on commitments tag wiki
Feb
2
wiki created commitments description
Feb
2
revised Is there a cumulative commitment scheme?
edited tags
Feb
2
revised What type of hash functions provides non-malleability of hash digests?
edited tags
Feb
2
answered What type of hash functions provides non-malleability of hash digests?
Feb
1
answered Why RSA encryption key is based on modulo(phi(n)) rather than modulo n
Jan
30
answered Are there two known strings which have the same MD5 hash value?
Jan
30
comment Salts, how does the script know what the salt is?
Thanks @Paulo and @Thomas; good points. I fixed my answer.
Jan
30
revised Salts, how does the script know what the salt is?
added 36 characters in body