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https://github.com/Ylianst/MeshCommander
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Fixed -kvmdatatrace issue.
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Ylian Saint-Hilaire
258
pki.js/RecipientInfo.js
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258
pki.js/RecipientInfo.js
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@@ -0,0 +1,258 @@
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import * as asn1js from "asn1js";
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import { getParametersValue, clearProps } from "pvutils";
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import KeyTransRecipientInfo from "./KeyTransRecipientInfo.js";
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import KeyAgreeRecipientInfo from "./KeyAgreeRecipientInfo.js";
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import KEKRecipientInfo from "./KEKRecipientInfo.js";
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import PasswordRecipientinfo from "./PasswordRecipientinfo.js";
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import OtherRecipientInfo from "./OtherRecipientInfo.js";
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//**************************************************************************************
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/**
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* Class from RFC5652
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*/
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export default class RecipientInfo
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{
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//**********************************************************************************
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/**
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* Constructor for RecipientInfo 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 {string}
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* @desc variant
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*/
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this.variant = getParametersValue(parameters, "variant", RecipientInfo.defaultValues("variant"));
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if("value" in parameters)
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/**
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* @type {*}
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* @desc value
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*/
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this.value = getParametersValue(parameters, "value", RecipientInfo.defaultValues("value"));
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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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}
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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 "variant":
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return (-1);
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case "value":
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return {};
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default:
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throw new Error(`Invalid member name for RecipientInfo 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 "variant":
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return (memberValue === RecipientInfo.defaultValues(memberName));
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case "value":
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return (Object.keys(memberValue).length === 0);
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default:
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throw new Error(`Invalid member name for RecipientInfo 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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* RecipientInfo ::= CHOICE {
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* ktri KeyTransRecipientInfo,
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* kari [1] KeyAgreeRecipientInfo,
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* kekri [2] KEKRecipientInfo,
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* pwri [3] PasswordRecipientinfo,
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* ori [4] OtherRecipientInfo }
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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} [type]
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* @property {string} [setName]
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* @property {string} [values]
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*/
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const names = getParametersValue(parameters, "names", {});
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return (new asn1js.Choice({
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value: [
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KeyTransRecipientInfo.schema({
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names: {
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blockName: (names.blockName || "")
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}
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}),
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new asn1js.Constructed({
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name: (names.blockName || ""),
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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: KeyAgreeRecipientInfo.schema().valueBlock.value
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}),
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new asn1js.Constructed({
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name: (names.blockName || ""),
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idBlock: {
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tagClass: 3, // CONTEXT-SPECIFIC
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tagNumber: 2 // [2]
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},
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value: KEKRecipientInfo.schema().valueBlock.value
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}),
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new asn1js.Constructed({
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name: (names.blockName || ""),
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idBlock: {
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tagClass: 3, // CONTEXT-SPECIFIC
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tagNumber: 3 // [3]
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},
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value: PasswordRecipientinfo.schema().valueBlock.value
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}),
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new asn1js.Constructed({
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name: (names.blockName || ""),
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idBlock: {
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tagClass: 3, // CONTEXT-SPECIFIC
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tagNumber: 4 // [4]
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},
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value: OtherRecipientInfo.schema().valueBlock.value
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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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"blockName"
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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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RecipientInfo.schema({
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names: {
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blockName: "blockName"
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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 RecipientInfo");
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//endregion
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//region Get internal properties from parsed schema
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if(asn1.result.blockName.idBlock.tagClass === 1)
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{
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this.variant = 1;
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this.value = new KeyTransRecipientInfo({ schema: asn1.result.blockName });
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}
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else
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{
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//region Create "SEQUENCE" from "ASN1_CONSTRUCTED"
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const blockSequence = new asn1js.Sequence({
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value: asn1.result.blockName.valueBlock.value
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});
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//endregion
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switch(asn1.result.blockName.idBlock.tagNumber)
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{
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case 1:
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this.variant = 2;
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this.value = new KeyAgreeRecipientInfo({ schema: blockSequence });
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break;
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case 2:
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this.variant = 3;
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this.value = new KEKRecipientInfo({ schema: blockSequence });
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break;
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case 3:
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this.variant = 4;
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this.value = new PasswordRecipientinfo({ schema: blockSequence });
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break;
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case 4:
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this.variant = 5;
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this.value = new OtherRecipientInfo({ schema: blockSequence });
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break;
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default:
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throw new Error("Incorrect structure of RecipientInfo block");
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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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* 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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const _schema = this.value.toSchema();
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switch(this.variant)
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{
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case 1:
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return _schema;
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case 2:
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case 3:
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case 4:
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//region Create "ASN1_CONSTRUCTED" from "SEQUENCE"
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_schema.idBlock.tagClass = 3; // CONTEXT-SPECIFIC
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_schema.idBlock.tagNumber = (this.variant - 1);
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//endregion
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return _schema;
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default:
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return new asn1js.Any();
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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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const _object = {
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variant: this.variant
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};
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if((this.variant >= 1) && (this.variant <= 4))
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_object.value = this.value.toJSON();
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return _object;
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}
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//**********************************************************************************
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}
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//**************************************************************************************
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