ASN.1 Editor, WPF Edition

Graphical .NET-based WPF Abstract Syntax Notation One (ASN.1) editor

ASN.1 Editor is a tool that allows you to display, edit, format and convert ASN.1-encoded data. Key features:

• ASN.1 node treeview
• Add, edit or delete nodes
• hex viewer
• Export nodes as text, or pure binary copy
• Data converter

Release notes and binary download links: ASN.1 Editor

Screenshots

Main Window

<img width="786" height="593" alt="image" src="https://github.com/user-attachments/assets/39a7a977-3670-4a52-a698-82a37f4e1e62" />

Hex Viewer

<img width="1001" height="593" alt="image" src="https://github.com/user-attachments/assets/99756f59-78c4-4abe-a4fe-be0c90701c6f" />

Text Dump

<img width="786" height="593" alt="image" src="https://github.com/user-attachments/assets/6bb247a7-d7f9-4a65-bd15-709ae669ab92" />

Binary Converter

Custom OID dictionary editor

Value Editor

<img width="586" height="413" alt="image" src="https://github.com/user-attachments/assets/4e1b0b2c-0070-4432-9248-2fe66bd32eef" />