Re: [xri] Performance of XRI DSig

[John Bradley <jbradley@mac.com>]

Nat is that 8x slower for just XML DSig with Java 5, or 8x slower for  
both?

John B.
On 11-Jun-09, at 5:03 AM, Nat Sakimura wrote:

> Hi.
>
> To address one of my concern, I have asked my colleague to test the  
> performance of the C14N.
>
> Test a: Calculate XML DSig for 10,000 times
> Test b: Calculate Signature over a string for 10,000 times.
>
> OS: WindowsXP
> CPU: Intel　Core2Quad Q9650 3.00GHz
> Memory: 4GByte
> Java：jdk1.6.0_12
> (Tested on Eclipse)
>
> Signature Algorithm: RSA + SHA1
>
> [Measurement Method]
> Repeat the test 10 times and take the average.
>
> a. Take an XML DSig (javax.xml.crypto.dsig.XMLSignature) over an XML  
> (DOM Structure)
> 50.353sec/10000　= 0.00503 sec/sig
>
> b. Take an Signature over an XML String (java.security.Signature)
> 49.300sec/10000　=　0.00493secs/sig
>
> So, on Java 6, impact of canonicalization is fairly small.
>
> That's a good news.
>
> Bad news is that the guy who did this testing told me that
> when he used Java 5 with Apache library, the performance was
> eight times slower. If that is true, it would be an issue.
>
> Best,
>
> =nat
>
>
>
>
>
> Result:
>
>
>
>
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