covid-certificate/lib/cose/header/extractHeader.js

Parse and verify a european digital covid certificate (dcc)

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.extractHeader = void 0;
const headerFromProtectedHeaders_1 = require("./headerFromProtectedHeaders");
const headerFromMap_1 = require("./headerFromMap");
/**
 * Get a header value from the COSE headers.
 *
 * If both protected and unprotected headers give the header, the
 * function will return the kid given in the  protected header
 *
 *
 * @param protectedHeaders
 * @param unprotectedHeaders
 * @param headerKey
 */
const extractHeader = (protectedHeaders, unprotectedHeaders, headerKey) => {
    let header = null;
    try {
        header = (0, headerFromProtectedHeaders_1.headerFromProtectedHeaders)(protectedHeaders, headerKey);
    }
    catch (error) {
        try {
            header = (0, headerFromMap_1.headerFromMap)(unprotectedHeaders, headerKey);
        }
        catch (error) {
            throw new Error("No header found");
        }
    }
    return header;
};
exports.extractHeader = extractHeader;