Hutool symmetric encryption

Encryption logic

public static void main(String[] args) {
    
		// 1.  Initialize the static code block internally   Set asymmetric encrypted object   The parent class of the new object will automatically generate the default public key and private key 
        RSA rsa = new RSA();
      	//  The following two lines of code don't do much  KeyType.PublicKey  When the public key is judged to be empty, it will be automatically generated 
        PrivateKey privateKey = rsa.getPrivateKey();
        PublicKey publicKey = rsa.getPublicKey();
        String s = rsa.encryptBcd("hello world", KeyType.PublicKey);
        byte[] decrypt = rsa.decrypt(s, KeyType.PrivateKey);
        System.out.println(StrUtil.str(decrypt,CharsetUtil.UTF_8));
    }