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https://github.com/Ylianst/MeshCommander
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Fixed -kvmdatatrace issue.
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Ylian Saint-Hilaire
344
pki.js/ECPrivateKey.js
Normal file
344
pki.js/ECPrivateKey.js
Normal file
@@ -0,0 +1,344 @@
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import * as asn1js from "asn1js";
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import { getParametersValue, toBase64, arrayBufferToString, stringToArrayBuffer, fromBase64, clearProps } from "pvutils";
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import ECPublicKey from "./ECPublicKey.js";
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//**************************************************************************************
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/**
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* Class from RFC5915
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*/
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export default class ECPrivateKey
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{
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//**********************************************************************************
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/**
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* Constructor for ECPrivateKey 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 {number}
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* @desc version
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*/
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this.version = getParametersValue(parameters, "version", ECPrivateKey.defaultValues("version"));
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/**
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* @type {OctetString}
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* @desc privateKey
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*/
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this.privateKey = getParametersValue(parameters, "privateKey", ECPrivateKey.defaultValues("privateKey"));
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if("namedCurve" in parameters)
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/**
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* @type {string}
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* @desc namedCurve
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*/
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this.namedCurve = getParametersValue(parameters, "namedCurve", ECPrivateKey.defaultValues("namedCurve"));
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if("publicKey" in parameters)
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/**
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* @type {ECPublicKey}
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* @desc publicKey
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*/
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this.publicKey = getParametersValue(parameters, "publicKey", ECPrivateKey.defaultValues("publicKey"));
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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 "version":
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return 1;
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case "privateKey":
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return new asn1js.OctetString();
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case "namedCurve":
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return "";
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case "publicKey":
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return new ECPublicKey();
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default:
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throw new Error(`Invalid member name for ECCPrivateKey class: ${memberName}`);
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}
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}
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//**********************************************************************************
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/**
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* Compare values with default values for all class members
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* @param {string} memberName String name for a class member
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* @param {*} memberValue Value to compare with default value
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*/
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static compareWithDefault(memberName, memberValue)
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{
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switch(memberName)
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{
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case "version":
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return (memberValue === ECPrivateKey.defaultValues(memberName));
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case "privateKey":
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return (memberValue.isEqual(ECPrivateKey.defaultValues(memberName)));
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case "namedCurve":
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return (memberValue === "");
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case "publicKey":
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return ((ECPublicKey.compareWithDefault("namedCurve", memberValue.namedCurve)) &&
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(ECPublicKey.compareWithDefault("x", memberValue.x)) &&
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(ECPublicKey.compareWithDefault("y", memberValue.y)));
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default:
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throw new Error(`Invalid member name for ECCPrivateKey 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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* ECPrivateKey ::= SEQUENCE {
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* version INTEGER { ecPrivkeyVer1(1) } (ecPrivkeyVer1),
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* privateKey OCTET STRING,
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* parameters [0] ECParameters {{ NamedCurve }} OPTIONAL,
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* publicKey [1] BIT STRING OPTIONAL
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* }
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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} [version]
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* @property {string} [privateKey]
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* @property {string} [namedCurve]
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* @property {string} [publicKey]
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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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new asn1js.Integer({ name: (names.version || "") }),
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new asn1js.OctetString({ name: (names.privateKey || "") }),
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new asn1js.Constructed({
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optional: true,
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idBlock: {
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tagClass: 3, // CONTEXT-SPECIFIC
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tagNumber: 0 // [0]
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},
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value: [
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new asn1js.ObjectIdentifier({ name: (names.namedCurve || "") })
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]
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}),
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new asn1js.Constructed({
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optional: true,
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idBlock: {
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tagClass: 3, // CONTEXT-SPECIFIC
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tagNumber: 1 // [1]
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},
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value: [
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new asn1js.BitString({ name: (names.publicKey || "") })
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]
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})
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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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"version",
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"privateKey",
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"namedCurve",
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"publicKey"
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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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ECPrivateKey.schema({
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names: {
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version: "version",
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privateKey: "privateKey",
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namedCurve: "namedCurve",
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publicKey: "publicKey"
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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 ECPrivateKey");
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//endregion
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//region Get internal properties from parsed schema
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this.version = asn1.result.version.valueBlock.valueDec;
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this.privateKey = asn1.result.privateKey;
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if("namedCurve" in asn1.result)
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this.namedCurve = asn1.result.namedCurve.valueBlock.toString();
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if("publicKey" in asn1.result)
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{
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const publicKeyData = { schema: asn1.result.publicKey.valueBlock.valueHex };
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if("namedCurve" in this)
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publicKeyData.namedCurve = this.namedCurve;
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this.publicKey = new ECPublicKey(publicKeyData);
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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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const outputArray = [
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new asn1js.Integer({ value: this.version }),
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this.privateKey
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];
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if("namedCurve" in this)
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{
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outputArray.push(new asn1js.Constructed({
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idBlock: {
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tagClass: 3, // CONTEXT-SPECIFIC
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tagNumber: 0 // [0]
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},
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value: [
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new asn1js.ObjectIdentifier({ value: this.namedCurve })
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]
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}));
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}
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if("publicKey" in this)
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{
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outputArray.push(new asn1js.Constructed({
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idBlock: {
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tagClass: 3, // CONTEXT-SPECIFIC
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tagNumber: 1 // [1]
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},
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value: [
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new asn1js.BitString({ valueHex: this.publicKey.toSchema().toBER(false) })
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]
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}));
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}
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return new asn1js.Sequence({
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value: outputArray
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});
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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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if((("namedCurve" in this) === false) || (ECPrivateKey.compareWithDefault("namedCurve", this.namedCurve)))
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throw new Error("Not enough information for making JSON: absent \"namedCurve\" value");
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let crvName = "";
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switch(this.namedCurve)
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{
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case "1.2.840.10045.3.1.7": // P-256
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crvName = "P-256";
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break;
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case "1.3.132.0.34": // P-384
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crvName = "P-384";
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break;
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case "1.3.132.0.35": // P-521
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crvName = "P-521";
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break;
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default:
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}
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const privateKeyJSON = {
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crv: crvName,
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d: toBase64(arrayBufferToString(this.privateKey.valueBlock.valueHex), true, true, false)
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};
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if("publicKey" in this)
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{
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const publicKeyJSON = this.publicKey.toJSON();
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privateKeyJSON.x = publicKeyJSON.x;
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privateKeyJSON.y = publicKeyJSON.y;
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}
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return privateKeyJSON;
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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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let coodinateLength = 0;
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if("crv" in json)
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{
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switch(json.crv.toUpperCase())
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{
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case "P-256":
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this.namedCurve = "1.2.840.10045.3.1.7";
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coodinateLength = 32;
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break;
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case "P-384":
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this.namedCurve = "1.3.132.0.34";
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coodinateLength = 48;
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break;
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case "P-521":
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this.namedCurve = "1.3.132.0.35";
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coodinateLength = 66;
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break;
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default:
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}
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}
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else
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throw new Error("Absent mandatory parameter \"crv\"");
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if("d" in json)
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{
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const convertBuffer = stringToArrayBuffer(fromBase64(json.d, true));
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if(convertBuffer.byteLength < coodinateLength)
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{
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const buffer = new ArrayBuffer(coodinateLength);
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const view = new Uint8Array(buffer);
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const convertBufferView = new Uint8Array(convertBuffer);
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view.set(convertBufferView, 1);
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this.privateKey = new asn1js.OctetString({ valueHex: buffer });
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}
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else
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this.privateKey = new asn1js.OctetString({ valueHex: convertBuffer.slice(0, coodinateLength) });
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}
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else
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throw new Error("Absent mandatory parameter \"d\"");
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if(("x" in json) && ("y" in json))
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this.publicKey = new ECPublicKey({ json });
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}
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//**********************************************************************************
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}
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//**************************************************************************************
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