asn1rt

MODULE

asn1rt

MODULE SUMMARY

ASN.1 runtime support functions

DESCRIPTION

This module is the interface module for the ASN.1 runtime support functions. To encode and decode ASN.1 types in runtime the functions in this module should be used.

EXPORTS

encode(Module,Type,Value)-> {ok,Bytes} | {error,Reason}

Types:
Module = Type = atom()
Value = term()
Bytes = [Int|binary|Bytes] when integer(Int), Int >= 0, Int =< 255
Reason = term()

Encodes Value of Type defined in the ASN.1 module Module. Returns a possibly nested list of bytes and or binaries if successful. To get as fast execution as possible the encode function only performs rudimentary tests that the input Value is a correct instance of Type. The length of strings is for example not always checked.

decode(Module,Type,Bytes) -> {ok,Value}|{error,Reason}

Types:
Module = Type = atom()
Value = Reason = term()
Bytes = binary | [Int] when integer(Int), Int >= 0, Int =< 255 | binary

Decodes Type from Module from the list of bytes Bytes. If the module is compiled with ber_bin or per_bin option Bytes must be a binary. Returns {ok,Value} if successful.

validate(Module,Type,Value) -> ok | {error,Reason}

Types:
Module = Type = atom()
Value = term()

Validates that Value conforms to Type from Module. Not implemented in this version of the ASN.1 application.

AUTHORS

Kenneth Lundin - support@erlang.ericsson.se