security.js

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'use strict';

/**
 * Class that provides security functionality through the pc-ble-driver-js AddOn.
 */
class Security {
    /**
     * Create a wrapper to the security functionality of the underlying BLE driver.
     *
     * @constructor
     * @param bleDriver The underlying BLE driver `pc-ble-driver-js-sd_api_v<X>` called with bindings.
     */
    constructor(bleDriver) {
        this._bleDriver = bleDriver;
        this._bleDriver.eccInit();
    }

    /**
     * Method that generates a public/private key pair where the public key is to be distributed.
     *
     * @returns {Object} The public private key pair. TODO: double check this.
     */
    generateKeyPair() {
        return this._bleDriver.eccGenerateKeypair();
    }

    /**
     * Method that generates a public key.
     *
     * @param {string} privateKey The private key that should be used to generate the public key.
     * @returns {string} The generated public key.
     */
    generatePublicKey(privateKey) {
        return this._bleDriver.eccComputePublicKey(privateKey);
    }

    /**
     * Method that generates a shared secret.
     *
     * @param {string} privateKey The private key that should be used to generate the shared secret.
     * @param {string} publicKey The public key that should be used to generate the shared secret.
     * @returns {string} The generated shared secret.
     */
    generateSharedSecret(privateKey, publicKey) {
        return this._bleDriver.eccComputeSharedSecret(privateKey, publicKey);
    }
}

module.exports = Security;