Re: ASN.1 is an XML Schema Language (Fix those lists!) andBina
tpassin@c... wrote: > I think that some of the sophisticated encodings like PER are very hard to get right and complete, too (I have never looked into these encodings, so have no first-hand experience here). > IMHO my guess is that the writing of a PER encoder/decoder (just that layer, not the schema-based encoder/decoder that drives it) is harder than writing an XML parser, but i do not think by a huge amount (but do not hold me too much to this statement!). PER reduces the choice of how an encoder may encode data, this makes it alot easier to develop the decoder correctly. There are enough resources out there to make the development process easier. Two freely available books have good chapters on PER . There are also two open source PER implementations . Of course obtaining the ASN.1 PER specification helps!  Paul.  http://www.oss.com/asn1/booksintro.html.  http://www.erlang.org/doc/r7b/lib/asn1-184.108.40.206/doc/index.html http://www.openh323.org/code.html  http://asn1.elibel.tm.fr/en/standards/index.htm#encoding http://www.itu.int/ITU-T/studygroups/com17/languages/X.691-0207.pdf -- | ? + ? = To question ----------------\ Paul Sandoz x19219 +353-1-8199219
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