Mr. Larmouth.
Thanks you for giving me very useful tutorial about
taggging.It's is reaaly useful and help me to understand
tagging type correctly.
Thanks.
> And of a slightly more advanced nature, you could
> try the tagging
> tutorial at
>
> http://www.larmouth.demon.co.uk/tutorials/tagging.ppt
>
> John L
>
> Conrad Sigona wrote:
> >>Hello.Now I started to study ASN.1.So I still
> beginner of
> >>ASN.1.Please () that I'm not familiar with ASN.1.
> >>Now I can't understand the meaning of tagged type.
> >>According to "A Layman's Guide to a Subset of
> ASN.1, BER,
> >>and DER",it describes "tagged type is derived from
> another
> >>type".But what does "another type" mean?With
> regard to the
> >>following example,why "Version" or "Extensions"
> type
> >>shuold be defined as explicitly tagged type.From
> which
> >>type the "Version" or "Extensions" type is
> derived?I can't
> >>find the "underlying type".And what is the
> difference of
> >>explicitly tagged type and implicitly tagged
> type.Why do
> >>we need to distinguish the usage of them.
> >>By the way how can we assign the tag number within
> the
> >>class?Is there some rule?
> >>
> >>I know this kind of question is very primitive.But
> Could
> >>someone teach me.
> >
> >
> > Dear Mr. Liu:
> >
> > You would do well to download one (or both) of the
> ASN.1 textbooks
> > available free of charge at www.oss.com.
> >
> >
>
=====================================================================
> > Conrad Sigona Toll Free
> : 1-888-OSS-ASN1
> > OSS Nokalva Voice Mail
> : 1-732-302-9669 x400
> > [EMAIL PROTECTED] Fax
> : 1-419-831-5035
> > http://www.oss.com My direct
> line : 1-315-845-1773
> >
> >
> >
>
>
> --
> Prof John Larmouth
> Larmouth T&PDS Ltd
> (Training and Protocol Development Services)
> 1 Blueberry Road
> Bowdon
> [EMAIL PROTECTED]
> Cheshire WA14 3LS Tel: +44
> 161 928 1605
> England Fax: +44 161 928 8069
>
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