RE: [emergency] Questions on ASN.1 and IPAWS Profile / CAP 1.2

["Alessandro Triglia" <sandro@oss.com>]

> -----Original Message-----
> From: Gilmore, Timothy [mailto:TIMOTHY.D.GILMORE@saic.com] 
> Sent: Tuesday, December 22, 2009 07:24
> To: emergency@lists.oasis-open.org
> Cc: Gooch, Martena M.
> Subject: [emergency] Questions on ASN.1 and IPAWS Profile / CAP 1.2
> 
> 
> 
> Timothy D. Gilmore | SAIC
> 
> Senior Test Engineer | ILPSG | NIMS SC | NIMS STEP
> 
> phone: 606.274.2063 | fax: 606.274.2012
> 
> mobile: 606.219.7882 | email: gilmoret@us.saic.com  
> 
> P Please consider the environment before printing this email.
> 
> I have a couple of questions for the group on ASN.1 and IPAWS 
> Profile / CAP 1.2 from one of our engineers. 
> 
> 
> As of CAP 1.1, OASIS allows CAP alerts to be ASN.1 encoded.  
> Will we see any such messages relating to the IPAWS profile 
> and CAP 1.2 standard?  I suspect that we will eventually, 
> since a lot of EAS equipment is probably already involved 
> with the PSTN.
> 
> If the ASN.1 schema in the CAP standard works correctly now 
> under CAP 1.1, then it shouldn't be difficult to build a 
> testing tool to convert back and forth between XML and ASN.1 
> encoded CAP messages. Are there any issues here?


I believe the ASN.1 schema for CAP 1.2 (like the ASN.1 schema for CAP 1.1)
was generated by using a translator conforming to the X.694 standard.  This
ensures that one can use that ASN.1 schema to perform any of the following
operations:

- parse an XML CAP 1.2 message
- produce an XML CAP 1.2 message
- decode an ASN.1/PER (binary) CAP 1.2 message
- produce an ASN.1/PER (binary) CAP 1.2 message

which in turn allows one to translate between these two formats just by
decoding from one format and re-encoding into the other format.

So the test should be just a matter of using any existing ASN.1 tool to do
the above on a set of test messages.

Alessandro


> 
> If there are issues, then should there be any encoding done 
> for IPAWS profile / CAP 1.2 standard for ASN.1?
> 
> 
> Thanks,
> 
> Timothy D. Gilmore | SAIC
> Senior Test Engineer | ILPSG | NIMS SC | NIMS STEP
> phone: 606.274.2063 | fax: 606.274.2012
> mobile: 606.219.7882 | email: gilmoret@us.saic.com
> 
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