请用Java编写含有中文注释和输入输出的RSA算法

以下是含有中文注释和输入输出的RSA算法的Java代码：

import java.math.BigInteger;
import java.util.Scanner;

public class RSA {
    // 生成密钥对
    public static void genKeyPair() {
        // 选择两个大素数p和q
        BigInteger p = BigInteger.probablePrime(512, new java.util.Random());
        BigInteger q = BigInteger.probablePrime(512, new java.util.Random());
        // 计算n = p * q
        BigInteger n = p.multiply(q);
        // 计算φ(n) = (p-1) * (q-1)
        BigInteger phiN = p.subtract(BigInteger.ONE).multiply(q.subtract(BigInteger.ONE));
        // 选择一个小于φ(n)的整数e
        BigInteger e = BigInteger.valueOf(65537);
        // 计算e关于φ(n)的模反元素d
        BigInteger d = e.modInverse(phiN);
        // 输出公钥和私钥
        System.out.println("公钥: (" + n + ", " + e + ")");
        System.out.println("私钥: (" + n + ", " + d + ")");
    }

    // 加密明文
    public static BigInteger encrypt(BigInteger m, BigInteger n, BigInteger e) {
        // 计算密文c = m^e mod n
        BigInteger c = m.modPow(e, n);
        return c;
    }

    // 解密密文
    public static BigInteger decrypt(BigInteger c, BigInteger n, BigInteger d) {
        // 计算明文m = c^d mod n
        BigInteger m = c.modPow(d, n);
        return m;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请选择操作：");
        System.out.println("1. 生成密钥对");
        System.out.println("2. 加密明文");
        System.out.println("3. 解密密文");
        int choice = scanner.nextInt();
        switch (choice) {
            case 1:
                genKeyPair();
                break;
            case 2:
                System.out.print("请输入明文m：");
                BigInteger m = scanner.nextBigInteger();
                System.out.print("请输入公钥n：");
                BigInteger n = scanner.nextBigInteger();
                System.out.print("请输入公钥e：");
                BigInteger e = scanner.nextBigInteger();
                BigInteger c = encrypt(m, n, e);
                System.out.println("密文c = " + c);
                break;
            case 3:
                System.out.print("请输入密文c：");
                BigInteger c2 = scanner.nextBigInteger();
                System.out.print("请输入私钥n：");
                BigInteger n2 = scanner.nextBigInteger();
                System.out.print("请输入私钥d：");
                BigInteger d = scanner.nextBigInteger();
                BigInteger m2 = decrypt(c2, n2, d);
                System.out.println("明文m = " + m2);
                break;
            default:
                System.out.println("输入错误！");
        }
    }
}

注意：这是一个简单的实现，实际使用中需要考虑更多的安全性问题。