EncryptionConfig.ts

export const encryptionConfig = {
    JsonWebTokenKey: 'unity-super-long-secret',
    ChaChaEncryptionKey: 'f2ZWDvhBXFSxKXpCl0wg9aEZnuXfA+B2c+5RU8wWbfQ=',
    ChaChaSigPublicKey: '6T7iL581iPWn1X/Nm8AD2PNRFDqGyGlRfslNy0SD63M=',
    ChaChaSigPrivateKey: 'UDPW1Td0BfG4bFINTU85mrwRp9ipd2iqKg/0n8hkFWbpPuIvnzWI9afVf82bwAPY81EUOobIaVF+yU3LRIPrcw==',
};

EncryptionService.ts

// encryptionService
import * as config from '../config/EncryptionConfig'
import * as sodium from 'sodium-native';
import * as md5 from 'md5';
import * as crypto from 'crypto';
export class EncryptionService {
    public nonce: number = 0;
    public timeout: number;
    public lastRequest: number;
    private sodium: any;
    private publicKey: any;
    private privateKey: any;
constructor() {
        // this.nonce = Math.random() * 256 * 256 * 256 | 0;
        this.nonce = Math.random() * (1 << 30) | 0;
    }
public signMessage(message: Buffer): Buffer {
        let signedMessage = Buffer.alloc(sodium.crypto_sign_BYTES + message.length);
        sodium.crypto_sign(signedMessage, message, Buffer.from(config.encryptionConfig.ChaChaSigPrivateKey, 'base64'));
        return signedMessage;
    }
public signOpenMessage(signedMessage: Buffer) {
        let message = Buffer.alloc(signedMessage.length - sodium.crypto_sign_BYTES);
        sodium.crypto_sign_open(message, signedMessage, this.publicKey);
        return message;
    }
}

EncryptionTest.ts

import {assert} from "chai";
import {EncryptionService} from "../Services/EncryptionService";
import * as crypto from 'crypto';

describe('encryption', () => {
    const encryptionService: EncryptionService = new EncryptionService();

    // 1000 * 10 Loops: 5.2 seconds
    it('encryption performance test', () => {
        const loop = 1000 * 10; // should use 1000 * 10
        const message = Buffer.alloc(1000 * 100);

        console.time('case1');
        for (let i = 0; i < loop; i++) {
            const signedMessage = encryptionService.signMessage(message);
            const openedMessage = encryptionService.signOpenMessage(signedMessage);
        }
        console.timeEnd('case1');
    });
});