asn1editor 0.3.1

ASN.1 editor framework with support for encoding and decoding various codecs.

asn1editor

Python based ASN.1 editor

This project contains a generic editor to view and edit ASN.1 encoded data. It can load and save data encoded in various ASN.1 formats. It uses asn1tools to parse ASN.1 specifications and read and write encoded data.

The controller part of the editor is written independently from the used GUI framework. A view implementation with wxPython is provided and can be started by running wxEditor.

Features

Supported types

The editor supports a large variety of ASN.1 data types:

• INTEGER
• REAL
• ENUMERATED
• BOOLEAN
• OCTET STRING, VisibleString, UTF8String, GeneralString, IA5String, OBJECT IDENTIFIER
• BIT STRING
• SEQUENCE, SET
• SEQUENCE OF, SET OF
• CHOICE

The following types are not supported yet:

• DATE, TIME-OF-DAY, DATE-TIME, DURATION
• GeneralizedTime, UTCTime

Supported encodings

The following encodings are supported for reading and writing data:

• JER
• OER
• XER
• DER
• BER
• PER
• UPER

IMPORTS

IMPORT references are automatically resolved if the ASN1 files containing the imported types reside in the same directory and have the extension ".asn".

Plugin interface

In order to use custom data formats or to work with the data, plugins can be used. These plugins need to inherit from the Plugin.Plugin class and can use the PluginInterface.PluginInterface class to interact with the main application. A list of plugins can be passed to the constructor of the main editor class and is then automatically embedded in the application.

An example application is if a custom header is added to an ASN.1 encoded data. Then the plugin can decode the header, choose the appropriate ASN.1 specification, load it, decode the data and display it.