* [COFF] Joys of ASN.1 [Was: Re: tangential unix question: whatever happened to NeWS?]
[not found] ` <CAD2gp_T95Bt6VAF8M=Q4uc4mwgp1jzjqa6dOh2JKiwiQbpR+HQ@mail.gmail.com>
@ 2021-01-31 2:47 ` cym224
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From: cym224 @ 2021-01-31 2:47 UTC (permalink / raw)
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Migration to COFF, methinks
On 30/01/2021 18:20, John Cowan wrote:
> Those were just examples. The hard part is parsing schemas,
> especially if you're writing in C and don't know about yacc and lex.Â
> That code tends to be horribly buggy.
True but tools such as the commercial ASN.1 -> C translators are fairly
good and even asn1c has come a long way in the past few decades.
N.
>
> But unless you need to support PER (which outright requires the
> schema) or unless you are trying to map ASN.1 compound objects to C
> structs or the equivalent, you can just process the whole thing in the
> same way you would JSON, except that it's binary and there are more
> types. Easy-peasy, especially in a dynamically typed language.
>
> Once there was a person on the xml-dev mailing list who kept repeating
> himself, insisting on the superiority of ASN.1 to XML. Finally I told
> him privately that his emails could be encoded in PER by using 0x01 to
> represent him (as the value of the author field) and allowing the
> recipients to reconstruct the message from that! He took it in good part.
>
>
>
> John Cowan http://vrici.lojban.org/~cowan
> <http://vrici.lojban.org/%7Ecowan> cowan at ccil.org <mailto:cowan at ccil.org>
> Don't be so humble. You're not that great.
> --Golda Meir
>
>
> On Fri, Jan 29, 2021 at 10:52 PM Richard Salz <rich.salz at gmail.com
> <mailto:rich.salz at gmail.com>> wrote:
>
> PER is not the reason for the hatred of ASN.1, it's more that the
> specs were created by a pay-to-play organization that fought
> against TCP/IP, the specs were not freely available for long
> years, BER was too flexible, and the DER rules were almost too
> hard to get right. Just a terse summary because this is probably
> off-topic for TUHS.
>
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