ASN1VE (ASN.1 Viewer / Editor) is a graphical user interface (GUI) tool for analyzing and editing BER/DER encoded data. It provides the capability to assign an ASN.1 schema to binary data to produce multiple views of the data showing all of the assigned type and element names.
Examples of some of the file types that can be viewed are:

• X.509 certificates (*.cer,*.crt)
• Transferred Account Procedure (TAP3) batch files
• Files containing Call Detail Records (CDR's) in various vendor formats
• SNMP message files

ASN1VE can display a decoded message with or without an ASN.1 definition as shown in the following screen snapshots:

Hex Data View

XML View

Text View

The basic functionality contained within ASN1VE may be used free without a license. This incudes viewing the basic structure of BER-encoded data in tree, hex, and detail views. Advanced functionality requires a license file be purchased. Advanced features include the following:

• Ability to associate an ASN.1 definition with a binary message
• Ability to edit data fields within a message.
• XML and brace text views of the ASN.1 message structure
• Search command to find various items in decoded messages
• Ability to input binary message data as hexadecimal text
• Command-line tool for translating ASN.1 data to XML form in batch mode