From 84adefa331c4159d432d22840663c38f155cd4c1 Mon Sep 17 00:00:00 2001 From: Erlang/OTP Date: Fri, 20 Nov 2009 14:54:40 +0000 Subject: The R13B03 release. --- lib/asn1/src/notes_latest.sgml | 100 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 lib/asn1/src/notes_latest.sgml (limited to 'lib/asn1/src/notes_latest.sgml') diff --git a/lib/asn1/src/notes_latest.sgml b/lib/asn1/src/notes_latest.sgml new file mode 100644 index 0000000000..5a397ecbc2 --- /dev/null +++ b/lib/asn1/src/notes_latest.sgml @@ -0,0 +1,100 @@ + + + +
+ ASN1 Release Notes + Kenneth Lundin + Kenneth Lundin + + Kenneth Lundin + Kenneth Lundin + 97-10-07 + A + notes_latest.sgml +
+ +

This document describes the changes made to the asn1 application. + +

+ ASN1 0.8.1 +

This is the first release of the ASN1 application. This version is released + for beta-testing. Some functionality will be added until the 1.0 version is + released. A list of missing features and restrictions can be found in the + chapter below. + +

+ Missing features and other restrictions + + +

The encoding rules BER and PER (aligned) is supported. PER (unaligned) + IS NOT SUPPORTED. + +

NOT SUPPORTED types ANY and ANY DEFINED BY + (is not in the standard any more). + +

NOT SUPPORTED types EXTERNAL and EMBEDDED-PDV. + +

NOT SUPPORTED type REAL (planned to be implemented). + +

The code generation support for value definitions in the ASN.1 notation is very limited + (planned to be enhanced). + +

The support for constraints is limited to: + +

+ SizeConstraint SIZE(X) +

+ SingleValue (1) +

+ ValueRange (X..Y) +

+ PermittedAlpabet FROM (but not for BMPString and UniversalString when generating PER). + +

Complex expressions in constraints is not supported (planned to be extended). + +

The current version of the compiler has very limited error checking: + +

Stops at first syntax error. +

Does not stop when a reference to an undefined type is found , + but prints an error message. Compilation of the generated + Erlang module will then fail. +

A whole number of other semantical controls is currently missing. This + means that the compiler will give little or bad help to detect what's wrong + with an ASN.1 specification, but will mostly work very well when the + ASN.1 specification is correct. + + +

The maximum INTEGER supported in this version is a signed 64 bit integer. This + limitation is probably quite reasonable. (Planned to be extended). + +

Only AUTOMATIC TAGS supported for PER. + +

Only EXPLICIT and IMPLICIT TAGS supported for BER. + +

The compiler supports decoding of BER-data with indefinite length but it is + not possible to produce data with indefinite length with the encoder. + +

+ +
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