ASN1.js

ASN.1 DER Encoder/Decoder and DSL for Node.js with no dependencies

Acknowledgement

This is a fork of @indutny's asn.js library with the following
changes made:

- all .int() returns are native BigInt values
- lint using standard

Example

Define model:

``js
const asn = require('@panva/asn1.js')

const Human = asn.define('Human', function () {
this.seq().obj(
this.key('firstName').octstr(),
this.key('lastName').octstr(),
this.key('age').int(),
this.key('gender').enum({ 0: 'male', 1: 'female' }),
this.key('bio').seqof(Bio)
)
})

const Bio = asn.define('Bio', function () {
this.seq().obj(
this.key('time').gentime(),
this.key('description').octstr()
)
})
`

Encode data:

`js
const output = Human.encode({
firstName: 'Thomas',
lastName: 'Anderson',
age: 28,
gender: 'male',
bio: [
{
time: new Date('31 March 1999').getTime(),
description: 'freedom of mind'
}
]
}, 'der')
`

Decode data:

`js
const human = Human.decode(output, 'der')
console.log(human)
/*
{ firstName: ,
lastName: ,
age: 28n,
gender: 'male',
bio:
[ { time: 922820400000,
description: } ] }
*/
`

$3

Its possible to parse data without stopping on first error. In order to do it,
you should call:

`js
const human = Human.decode(output, 'der', { partial: true })
console.log(human)
/*
{ result: { ... },
errors: [ ... ] }
*/
``