- Author: Jonathan M. Wilbur <jonathan@wilbur.space>
- Copyright Year: 2018
- License: MIT License
- Version: See
versionfile or git tags.
ASN.1 stands for Abstract Syntax Notation. ASN.1 was first specified in X.680 - Abstract Syntax Notation One (ASN.1), by the International Telecommunications Union. ASN.1 messages can be encoded in one of several encoding/decoding standards. It provides a system of types that are extensible, and can presumably describe every protocol. You can think of it as a protocol for describing other protocols as well as a family of standards for encoding and decoding said protocols. It is similar to Google's Protocol Buffers, or Sun Microsystems' External Data Representation (XDR).
For more information on what ASN.1 is, see documentation/asn1.md.
ASN.1 is used in, or required by, multiple technologies, including:
- X.509 Certificates, used in SSL/TLS
- Lightweight Directory Access Protocol (LDAP)
- X.400, the messaging system used by the U.S. Military
- X.500
- The magnetic stripes on credit cards and debit cards
- Microsoft's Remote Desktop Protocol (RDP)
- Simple Network Management Protocol (SNMP)
- Common Management Information Protocol (CMIP)
- Signalling System Number 7 (SS7), used to make most phone calls on the Public Switched Telephone Network (PSTN).
- Kerberos 5
- H.323 Video conferencing
- Biometrics Protocols:
- Computer Supported Telecommunications Applications (CSTA)
- Dedicated Short Range Communications (SAE J2735)
- Cellular telephony:
If you look in the
asn1 directory of WireShark's source code,
you'll see all of the protocols that use ASN.1.
This list can also be found in documentation/asn1.d.
You can build this library by running tsc. The outputs will all be in dist.
- Syntax highlighting
- Bracket matching
- Limited hints, warnings, and errors
- Limited formatting
- Go to definition
- Hover definitions
Unfortunately, I designed this extension poorly from the start, so don't get too creative:
- Validation can't occur across lines.
- Comments inserted in the middle of lines can screw things up.
- Strings are treated just like syntax.
But don't let that scare you. This will work fine for 99% of cases.
- X.680 - Abstract Syntax Notation One (ASN.1), published by the International Telecommunications Union.
- ASN.1: Communication Between Heterogeneous Systems by Olivier Dubuisson
If you would like to suggest fixes or improvements on this library, please just leave an issue on this GitHub page. If you would like to contact me for other reasons, please email me at jonathan@wilbur.space (My GPG Key) (My TLS Certificate). 🐗