mirror of
https://github.com/Ylianst/MeshCommander
synced 2025-12-06 06:03:20 +00:00
312 lines
8.4 KiB
JavaScript
312 lines
8.4 KiB
JavaScript
import * as asn1js from "asn1js";
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import { getParametersValue, clearProps } from "pvutils";
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import { getCrypto } from "./common.js";
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import AlgorithmIdentifier from "./AlgorithmIdentifier.js";
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import ECPublicKey from "./ECPublicKey.js";
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import RSAPublicKey from "./RSAPublicKey.js";
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//**************************************************************************************
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/**
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* Class from RFC5280
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*/
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export default class PublicKeyInfo
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{
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//**********************************************************************************
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/**
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* Constructor for PublicKeyInfo class
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* @param {Object} [parameters={}]
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* @param {Object} [parameters.schema] asn1js parsed value to initialize the class from
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*/
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constructor(parameters = {})
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{
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//region Internal properties of the object
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/**
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* @type {AlgorithmIdentifier}
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* @desc Algorithm identifier
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*/
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this.algorithm = getParametersValue(parameters, "algorithm", PublicKeyInfo.defaultValues("algorithm"));
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/**
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* @type {BitString}
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* @desc Subject public key value
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*/
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this.subjectPublicKey = getParametersValue(parameters, "subjectPublicKey", PublicKeyInfo.defaultValues("subjectPublicKey"));
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if("parsedKey" in parameters)
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/**
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* @type {ECPublicKey|RSAPublicKey}
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* @desc Parsed public key value
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*/
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this.parsedKey = getParametersValue(parameters, "parsedKey", PublicKeyInfo.defaultValues("parsedKey"));
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//endregion
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//region If input argument array contains "schema" for this object
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if("schema" in parameters)
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this.fromSchema(parameters.schema);
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//endregion
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//region If input argument array contains "json" for this object
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if("json" in parameters)
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this.fromJSON(parameters.json);
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//endregion
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}
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//**********************************************************************************
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/**
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* Return default values for all class members
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* @param {string} memberName String name for a class member
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*/
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static defaultValues(memberName)
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{
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switch(memberName)
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{
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case "algorithm":
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return new AlgorithmIdentifier();
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case "subjectPublicKey":
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return new asn1js.BitString();
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default:
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throw new Error(`Invalid member name for PublicKeyInfo class: ${memberName}`);
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}
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}
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//**********************************************************************************
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/**
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* Return value of pre-defined ASN.1 schema for current class
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*
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* ASN.1 schema:
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* ```asn1
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* SubjectPublicKeyInfo ::= Sequence {
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* algorithm AlgorithmIdentifier,
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* subjectPublicKey BIT STRING }
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* ```
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*
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* @param {Object} parameters Input parameters for the schema
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* @returns {Object} asn1js schema object
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*/
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static schema(parameters = {})
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{
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/**
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* @type {Object}
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* @property {string} [blockName]
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* @property {string} [algorithm]
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* @property {string} [subjectPublicKey]
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*/
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const names = getParametersValue(parameters, "names", {});
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return (new asn1js.Sequence({
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name: (names.blockName || ""),
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value: [
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AlgorithmIdentifier.schema(names.algorithm || {}),
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new asn1js.BitString({ name: (names.subjectPublicKey || "") })
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]
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}));
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}
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//**********************************************************************************
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/**
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* Convert parsed asn1js object into current class
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* @param {!Object} schema
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*/
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fromSchema(schema)
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{
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//region Clear input data first
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clearProps(schema, [
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"algorithm",
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"subjectPublicKey"
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]);
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//endregion
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//region Check the schema is valid
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const asn1 = asn1js.compareSchema(schema,
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schema,
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PublicKeyInfo.schema({
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names: {
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algorithm: {
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names: {
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blockName: "algorithm"
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}
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},
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subjectPublicKey: "subjectPublicKey"
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}
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})
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);
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if(asn1.verified === false)
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throw new Error("Object's schema was not verified against input data for PublicKeyInfo");
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//endregion
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//region Get internal properties from parsed schema
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this.algorithm = new AlgorithmIdentifier({ schema: asn1.result.algorithm });
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this.subjectPublicKey = asn1.result.subjectPublicKey;
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switch(this.algorithm.algorithmId)
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{
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case "1.2.840.10045.2.1": // ECDSA
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if("algorithmParams" in this.algorithm)
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{
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if(this.algorithm.algorithmParams.constructor.blockName() === asn1js.ObjectIdentifier.blockName())
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{
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try
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{
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this.parsedKey = new ECPublicKey({
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namedCurve: this.algorithm.algorithmParams.valueBlock.toString(),
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schema: this.subjectPublicKey.valueBlock.valueHex
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});
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}
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catch(ex){} // Could be a problems during recognision of internal public key data here. Let's ignore them.
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}
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}
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break;
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case "1.2.840.113549.1.1.1": // RSA
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{
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const publicKeyASN1 = asn1js.fromBER(this.subjectPublicKey.valueBlock.valueHex);
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if(publicKeyASN1.offset !== (-1))
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{
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try
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{
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this.parsedKey = new RSAPublicKey({ schema: publicKeyASN1.result });
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}
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catch(ex){} // Could be a problems during recognision of internal public key data here. Let's ignore them.
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}
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}
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break;
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default:
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}
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//endregion
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}
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//**********************************************************************************
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/**
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* Convert current object to asn1js object and set correct values
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* @returns {Object} asn1js object
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*/
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toSchema()
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{
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//region Construct and return new ASN.1 schema for this object
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return (new asn1js.Sequence({
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value: [
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this.algorithm.toSchema(),
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this.subjectPublicKey
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]
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}));
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//endregion
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}
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//**********************************************************************************
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/**
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* Convertion for the class to JSON object
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* @returns {Object}
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*/
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toJSON()
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{
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//region Return common value in case we do not have enough info fo making JWK
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if(("parsedKey" in this) === false)
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{
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return {
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algorithm: this.algorithm.toJSON(),
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subjectPublicKey: this.subjectPublicKey.toJSON()
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};
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}
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//endregion
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//region Making JWK
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const jwk = {};
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switch(this.algorithm.algorithmId)
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{
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case "1.2.840.10045.2.1": // ECDSA
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jwk.kty = "EC";
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break;
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case "1.2.840.113549.1.1.1": // RSA
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jwk.kty = "RSA";
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break;
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default:
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}
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const publicKeyJWK = this.parsedKey.toJSON();
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for(const key of Object.keys(publicKeyJWK))
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jwk[key] = publicKeyJWK[key];
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return jwk;
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//endregion
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}
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//**********************************************************************************
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/**
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* Convert JSON value into current object
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* @param {Object} json
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*/
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fromJSON(json)
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{
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if("kty" in json)
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{
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switch(json.kty.toUpperCase())
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{
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case "EC":
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this.parsedKey = new ECPublicKey({ json });
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this.algorithm = new AlgorithmIdentifier({
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algorithmId: "1.2.840.10045.2.1",
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algorithmParams: new asn1js.ObjectIdentifier({ value: this.parsedKey.namedCurve })
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});
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break;
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case "RSA":
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this.parsedKey = new RSAPublicKey({ json });
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this.algorithm = new AlgorithmIdentifier({
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algorithmId: "1.2.840.113549.1.1.1",
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algorithmParams: new asn1js.Null()
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});
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break;
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default:
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throw new Error(`Invalid value for "kty" parameter: ${json.kty}`);
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}
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this.subjectPublicKey = new asn1js.BitString({ valueHex: this.parsedKey.toSchema().toBER(false) });
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}
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}
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//**********************************************************************************
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importKey(publicKey)
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{
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//region Initial variables
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let sequence = Promise.resolve();
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const _this = this;
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//endregion
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//region Initial check
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if(typeof publicKey === "undefined")
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return Promise.reject("Need to provide publicKey input parameter");
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//endregion
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//region Get a "crypto" extension
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const crypto = getCrypto();
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if(typeof crypto === "undefined")
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return Promise.reject("Unable to create WebCrypto object");
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//endregion
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//region Export public key
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sequence = sequence.then(() =>
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crypto.exportKey("spki", publicKey));
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//endregion
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//region Initialize internal variables by parsing exported value
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sequence = sequence.then(
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/**
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* @param {ArrayBuffer} exportedKey
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*/
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exportedKey =>
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{
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const asn1 = asn1js.fromBER(exportedKey);
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try
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{
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_this.fromSchema(asn1.result);
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}
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catch(exception)
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{
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return Promise.reject("Error during initializing object from schema");
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}
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return undefined;
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},
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error => Promise.reject(`Error during exporting public key: ${error}`)
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);
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//endregion
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return sequence;
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}
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//**********************************************************************************
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}
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//**************************************************************************************
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