src/OriginatorPublicKey.js

import * as asn1js from "asn1js";
import { getParametersValue, clearProps } from "pvutils";
import AlgorithmIdentifier from "./AlgorithmIdentifier.js";
//**************************************************************************************
/**
 * Class from RFC5652
 */
export default class OriginatorPublicKey
{
	//**********************************************************************************
	/**
	 * Constructor for OriginatorPublicKey class
	 * @param {Object} [parameters={}]
	 * @property {Object} [schema] asn1js parsed value
	 */
	constructor(parameters = {})
	{
		//region Internal properties of the object
		/**
		 * @type {AlgorithmIdentifier}
		 * @description algorithm
		 */
		this.algorithm = getParametersValue(parameters, "algorithm", OriginatorPublicKey.defaultValues("algorithm"));
		/**
		 * @type {BitString}
		 * @description publicKey
		 */
		this.publicKey = getParametersValue(parameters, "publicKey", OriginatorPublicKey.defaultValues("publicKey"));
		//endregion

		//region If input argument array contains "schema" for this object
		if("schema" in parameters)
			this.fromSchema(parameters.schema);
		//endregion
	}
	//**********************************************************************************
	/**
	 * Return default values for all class members
	 * @param {string} memberName String name for a class member
	 */
	static defaultValues(memberName)
	{
		switch(memberName)
		{
			case "algorithm":
				return new AlgorithmIdentifier();
			case "publicKey":
				return new asn1js.BitString();
			default:
				throw new Error(`Invalid member name for OriginatorPublicKey class: ${memberName}`);
		}
	}
	//**********************************************************************************
	/**
	 * Compare values with default values for all class members
	 * @param {string} memberName String name for a class member
	 * @param {*} memberValue Value to compare with default value
	 */
	static compareWithDefault(memberName, memberValue)
	{
		switch(memberName)
		{
			case "algorithm":
			case "publicKey":
				return (memberValue.isEqual(OriginatorPublicKey.defaultValues(memberName)));
			default:
				throw new Error(`Invalid member name for OriginatorPublicKey class: ${memberName}`);
		}
	}
	//**********************************************************************************
	/**
	 * Return value of asn1js schema for current class
	 * @param {Object} parameters Input parameters for the schema
	 * @returns {Object} asn1js schema object
	 */
	static schema(parameters = {})
	{
		//OriginatorPublicKey ::= SEQUENCE {
		//    algorithm AlgorithmIdentifier,
		//    publicKey BIT STRING }

		/**
		 * @type {Object}
		 * @property {string} [blockName]
		 * @property {string} [algorithm]
		 * @property {string} [publicKey]
		 */
		const names = getParametersValue(parameters, "names", {});

		return (new asn1js.Sequence({
			name: (names.blockName || ""),
			value: [
				AlgorithmIdentifier.schema(names.algorithm || {}),
				new asn1js.BitString({ name: (names.publicKey || "") })
			]
		}));
	}
	//**********************************************************************************
	/**
	 * Convert parsed asn1js object into current class
	 * @param {!Object} schema
	 */
	fromSchema(schema)
	{
		//region Clear input data first
		clearProps(schema, [
			"algorithm",
			"publicKey"
		]);
		//endregion
		
		//region Check the schema is valid
		const asn1 = asn1js.compareSchema(schema,
			schema,
			OriginatorPublicKey.schema({
				names: {
					algorithm: {
						names: {
							blockName: "algorithm"
						}
					},
					publicKey: "publicKey"
				}
			})
		);

		if(asn1.verified === false)
			throw new Error("Object's schema was not verified against input data for OriginatorPublicKey");
		//endregion

		//region Get internal properties from parsed schema
		this.algorithm = new AlgorithmIdentifier({ schema: asn1.result.algorithm });
		this.publicKey = asn1.result.publicKey;
		//endregion
	}
	//**********************************************************************************
	/**
	 * Convert current object to asn1js object and set correct values
	 * @returns {Object} asn1js object
	 */
	toSchema()
	{
		//region Construct and return new ASN.1 schema for this object
		return (new asn1js.Sequence({
			value: [
				this.algorithm.toSchema(),
				this.publicKey
			]
		}));
		//endregion
	}
	//**********************************************************************************
	/**
	 * Convertion for the class to JSON object
	 * @returns {Object}
	 */
	toJSON()
	{
		return {
			algorithm: this.algorithm.toJSON(),
			publicKey: this.publicKey.toJSON()
		};
	}
	//**********************************************************************************
}
//**************************************************************************************