cloudkit-js/dist/sign.js

A JS library for managing a CloudKit container

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.SignService = void 0;
const crypto_1 = __importDefault(require("crypto"));
class SignService {
    constructor(privateKey, keyId) {
        this.privateKey = privateKey;
        this.keyId = keyId;
    }
    getDateString() {
        // We need to strip out the milliseconds
        return new Date().toISOString().replace(/\.[0-9]+?Z/, "Z");
    }
    signRequest(payload, requestPath) {
        const hash = crypto_1.default.createHash("sha256");
        const sign = crypto_1.default.createSign("RSA-SHA256");
        const now = this.getDateString();
        // Hash the payload
        hash.update(payload, "utf8");
        // Base64 it
        const base64PayloadHash = hash.digest("base64");
        // Now create a signature.
        // It's comprised of [dateString]:[base64PayloadHash]:[requestPath]
        const signatureData = [
            now,
            base64PayloadHash,
            requestPath
        ].join(":");
        // Now we'll RSA-SHA256 sign the signatureData with our private key
        sign.update(signatureData);
        return {
            signature: sign.sign(this.privateKey, "base64"),
            dateString: now
        };
    }
    getKeyId() {
        return this.keyId;
    }
}
exports.SignService = SignService;