asn1
Contains parsers and serializers for ASN.1 (currently BER only)
Last updated 2 years ago by melloc .
MIT · Repository · Bugs · Original npm · Tarball · package.json
$ cnpm install asn1 
SYNC missed versions from official npm registry.

node-asn1 is a library for encoding and decoding ASN.1 datatypes in pure JS. Currently BER encoding is supported; at some point I'll likely have to do DER.

Usage

Mostly, if you're actually needing to read and write ASN.1, you probably don't need this readme to explain what and why. If you have no idea what ASN.1 is, see this: ftp://ftp.rsa.com/pub/pkcs/ascii/layman.asc

The source is pretty much self-explanatory, and has read/write methods for the common types out there.

Decoding

The following reads an ASN.1 sequence with a boolean.

var Ber = require('asn1').Ber;

var reader = new Ber.Reader(Buffer.from([0x30, 0x03, 0x01, 0x01, 0xff]));

reader.readSequence();
console.log('Sequence len: ' + reader.length);
if (reader.peek() === Ber.Boolean)
  console.log(reader.readBoolean());

Encoding

The following generates the same payload as above.

var Ber = require('asn1').Ber;

var writer = new Ber.Writer();

writer.startSequence();
writer.writeBoolean(true);
writer.endSequence();

console.log(writer.buffer);

Installation

npm install asn1

License

MIT.

Bugs

See https://github.com/joyent/node-asn1/issues.

Current Tags

  • 0.2.4                                ...           latest (2 years ago)

17 Versions

  • 0.2.4                                ...           2 years ago
  • 0.2.3                                ...           5 years ago
  • 0.2.2                                ...           6 years ago
  • 0.2.1                                ...           6 years ago
  • 0.2.0                                ...           6 years ago
  • 0.1.11                                ...           9 years ago
  • 0.1.10                                ...           9 years ago
  • 0.1.2                                ...           9 years ago
  • 0.1.0                                ...           9 years ago
  • 0.1.1                                ...           9 years ago
  • 0.1.6                                ...           9 years ago
  • 0.1.5                                ...           9 years ago
  • 0.1.4                                ...           9 years ago
  • 0.1.3                                ...           9 years ago
  • 0.1.7                                ...           9 years ago
  • 0.1.9                                ...           9 years ago
  • 0.1.8                                ...           9 years ago
Downloads
Today 13,895
This Week 194,029
This Month 470,237
Last Day 45,830
Last Week 247,493
Last Month 1,114,294
Dependencies (1)
Dev Dependencies (5)
Dependents (278)

Copyright 2014 - 2017 © taobao.org |