@react-native-oh-tpl/react-native-securerandom/harmony/secure_random/src/main/ets/SecureRandomTurboModule.ts

Generate cryptographically-secure random bytes in react native

/**
 * MIT License
 *
 * Copyright (C) 2024 Huawei Device Co., Ltd.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import { TurboModule } from '@rnoh/react-native-openharmony/ts';
import { TM } from '@rnoh/react-native-openharmony/generated/ts';
import cryptoFramework from '@ohos.security.cryptoFramework';
import Logger from './Logger';

export class SecureRandomTurboModule extends TurboModule implements TM.SecureRandomNativeModule.Spec {

  constructor(ctx) {
    super(ctx);
  }

  async generateSecureRandomAsBase64(length: number): Promise<cryptoFramework.DataBlob> {
    let rand = cryptoFramework.createRandom();
    let randOutput:cryptoFramework.DataBlob = await rand.generateRandom(length);
    Logger.info('rand output:' + randOutput.data)
    Logger.info(`generateSecureRandomAsBase64 running:${length}`)
    return Promise.resolve(randOutput)
  }

}