ASN.1 JavaScript decoder
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=

with hex dump

Instructions

This page contains a JavaScript generic ASN.1 parser that can decode any valid ASN.1 DER or BER structure whether Base64-encoded (raw base64, PEM armoring and begin-base64 are recognized) or Hex-encoded.

This tool can be used online at the address http://lapo.it/asn1js/ or offline, unpacking the ZIP file in a directory and opening index.html in a browser

On the left of the page will be printed a tree representing the hierarchical structure, on the right side an hex dump will be shown.
Hovering on the tree highlights ancestry (the hovered node and all its ancestors get colored) and the position of the hovered node gets highlighted in the hex dump (with header and content in a different colors).
Clicking a node in the tree will hide its sub-nodes (collapsed nodes can be noticed because they will become italic).

Copyright

OBJECT IDENTIFIER values are recognized using data taken from Peter Gutmann's dumpasn1 program.

ASN.1 JavaScript decoder

Instructions

Copyright

Links