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seen Feb 7 '13 at 17:32

Feb
5
awarded  Commentator
Feb
5
comment ECDH VS. DH benchmarking in JAVA
Its the same story there to im afraid..i must be doing something really really stupid..
Feb
5
revised ECDH VS. DH benchmarking in JAVA
Added the revised code
Feb
5
comment ECDH VS. DH benchmarking in JAVA
I might be doing something wrong, and if so im dont have the slightest clue to what it is. I find it unlikely that th Sun library is the problem. Just for the sake of it i poste the revised code again.
Feb
3
comment ECDH VS. DH benchmarking in JAVA
I find this really strange, ECDH (224bit) keygen takes approx: ~7ms while DH (1024bit) takes approx: ~3 ms. Now, i would expect that java's standard security lib uses some (as Thomas mentioned) predefined curves for respective keysizes. Even though finding any info regarding this seems impossible.
Feb
3
awarded  Scholar
Feb
3
comment ECDH VS. DH benchmarking in JAVA
Cheers Thomas!:) This was indeed enlightning.
Feb
3
accepted ECDH VS. DH benchmarking in JAVA
Feb
2
comment ECDH VS. DH benchmarking in JAVA
@CodesInChaos I looked it up. (For DH 1024) Public Keysize: 426 Private keysize: 362 Prime size: 1024
Feb
2
comment ECDH VS. DH benchmarking in JAVA
I assume that the standard library in java has some predefined curves for certain keysizes. Although Im having a hard time figuring them out.
Feb
2
comment ECDH VS. DH benchmarking in JAVA
For ECDH(224) i get (just a sample): 7,8,7,8,7,8,12,8 (ms) For DH(1024) i get (just a sample): 2,3,3,3,2,3,2,3,3 (ms)
Feb
2
comment ECDH VS. DH benchmarking in JAVA
@CodesInChaos I begin with generating 1000 keypairs (calibration you could say), then I generate an additional 50 pairs which are the ones being measured.
Feb
2
asked ECDH VS. DH benchmarking in JAVA
Nov
6
comment Carmichael number factoring
@fgrieu: Thank you for answering. Could you perhaps elaborate a bit more on why you think the success rate should be >= 3/4
Nov
6
comment Carmichael number factoring
Thanks, ill have a look at it:)
Nov
6
awarded  Student
Nov
6
awarded  Editor
Nov
6
revised Carmichael number factoring
deleted 3 characters in body
Nov
6
asked Carmichael number factoring