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Torin Sandall
fa9ae9437c
The gitbook install has been incredibly flaky due to it's dependency on npm. This commit simply vendors the node_modules so that each time we build the site the process doesn't have to re-run gitbook install. Signed-off-by: Torin Sandall <torinsandall@gmail.com>
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.