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@peculiar/asn1-schema

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@peculiar/asn1-schema

Decorators for ASN.1 schemas building


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3.6M
increased by1.66%
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What is @peculiar/asn1-schema?

@peculiar/asn1-schema is a JavaScript library for working with ASN.1 (Abstract Syntax Notation One) schemas. It provides tools for defining, encoding, and decoding ASN.1 data structures, which are commonly used in cryptographic protocols and data interchange formats.

What are @peculiar/asn1-schema's main functionalities?

Defining ASN.1 Schemas

This feature allows you to define ASN.1 schemas using decorators. The code sample demonstrates how to define a simple ASN.1 schema with an integer and a UTF-8 string.

const { AsnProp, AsnPropTypes, AsnType, AsnTypeTypes } = require('@peculiar/asn1-schema');

@AsnType({ type: AsnTypeTypes.Sequence })
class MySchema {
  @AsnProp({ type: AsnPropTypes.Integer })
  public id = 0;

  @AsnProp({ type: AsnPropTypes.Utf8String })
  public name = '';
}

const schema = new MySchema();
schema.id = 1;
schema.name = 'Example';

Encoding ASN.1 Data

This feature allows you to encode data according to the defined ASN.1 schema. The code sample shows how to serialize an instance of the schema into an ASN.1 encoded format.

const { AsnConvert } = require('@peculiar/asn1-schema');

const schema = new MySchema();
schema.id = 1;
schema.name = 'Example';

const encoded = AsnConvert.serialize(schema);
console.log(encoded);

Decoding ASN.1 Data

This feature allows you to decode ASN.1 encoded data back into the defined schema. The code sample demonstrates how to parse an ASN.1 encoded byte array into an instance of the schema.

const { AsnConvert } = require('@peculiar/asn1-schema');

const encoded = new Uint8Array([48, 10, 2, 1, 1, 12, 5, 69, 120, 97, 109, 112, 108, 101]);
const decoded = AsnConvert.parse(encoded, MySchema);
console.log(decoded);

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Package last updated on 01 Aug 2024

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