有很多因素需要考虑，但开始你可以使用下面的逻辑加密. creits https://www.javaguides.net/2020/02/java-string-encryption-decryption-example.html?m=1
下面是用Java加密和解密字符串或文本的完整Java程序：

import java.nio.charset.StandardCharsets;
    import java.security.MessageDigest;
    import java.security.NoSuchAlgorithmException;
    import java.util.Arrays;
    import java.util.Base64;
    import javax.crypto.Cipher;
    import javax.crypto.spec.SecretKeySpec;

    public class AESEncryptionDecryption {
        private static SecretKeySpec secretKey;
        private static byte[] key;
        private static final String ALGORITHM = "AES";

        public void prepareSecreteKey(String myKey) {
            MessageDigest sha = null;
            try {
                key = myKey.getBytes(StandardCharsets.UTF_8);
                sha = MessageDigest.getInstance("SHA-1");
                key = sha.digest(key);
                key = Arrays.copyOf(key, 16);
                secretKey = new SecretKeySpec(key, ALGORITHM);
            } catch (NoSuchAlgorithmException e) {
                e.printStackTrace();
            }
        }
    public String encrypt(String strToEncrypt, String secret) {
        try {
            prepareSecreteKey(secret);
            Cipher cipher = Cipher.getInstance(ALGORITHM);
            cipher.init(Cipher.ENCRYPT_MODE, secretKey);
            return Base64.getEncoder().encodeToString(cipher.doFinal(strToEncrypt.getBytes("UTF-8")));
        } catch (Exception e) {
            System.out.println("Error while encrypting: " + e.toString());
        }
        return null;
    }

    public String decrypt(String strToDecrypt, String secret) {
        try {
            prepareSecreteKey(secret);
            Cipher cipher = Cipher.getInstance(ALGORITHM);
            cipher.init(Cipher.DECRYPT_MODE, secretKey);
            return new String(cipher.doFinal(Base64.getDecoder().decode(strToDecrypt)));
        } catch (Exception e) {
            System.out.println("Error while decrypting: " + e.toString());
        }
        return null;
    }

    public static void main(String[] args) {
        final String secretKey = "secrete";

        String originalString = "javaguides";

        AESEncryptionDecryption aesEncryptionDecryption = new AESEncryptionDecryption();
        String encryptedString = aesEncryptionDecryption.encrypt(originalString, secretKey);
        String decryptedString = aesEncryptionDecryption.decrypt(encryptedString, secretKey);

        System.out.println(originalString);
        System.out.println(encryptedString);
        System.out.println(decryptedString);
    }
}