[Ndb] FW: NDB Committee Question

[Sam Buckwalter]

NDBer’s:

Please read David’s email below and provide comment.

Thanks

Sam Buckwalter
Program Director

ARINC Industry Activities
An SAE ITC Industry Program
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c  +1.443.454.0584
 sbuckwalter at sae-itc.org<mailto:sbuckwalter at sae-itc.org>
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From: Baker Jr., David E [mailto:dbaker at mitre.org]
Sent: Wednesday, January 14, 2015 8:21 AM
To: Sam Buckwalter
Subject: NDB Committee Question

Sam,

This is the question to ask the group.

Background:  The 424A XML format will define a standard character encoding.  Right now we are using the default of UTF-8 some might know this as Unicode.  Unicode allows for a wide range of international non-English characters.  However, Unicode will make the 424A standard less secure as there are many characters across the world that are very similar, and can be used to spoof people.  For example, I inserted these characters that all look very similar to the letter ‘o’ oŏōơȯʘοϘϙ.  In short, Unicode makes the 424A standard less secure than 424.

Question:  Do we need UTF-8, if not is the group happy with the character encoding being “US-ASCII”?  This will require the use of a script to create the XML schemas from the UML model, however the UML software vendor provided me a script to do this.

Impact:  Limit the allowable characters in one clean move.  Requires a script to generate the XML schemas.  Requires the ultimate, corporate, and/or software engineering version of Sparx EA.

David E. Baker Jr.
Systems Engineer
MITRE Corporation, Bedford Ma
781-271-4779



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