使用 Spring Security 的 Encryptors

参考：Encryptors

例子 1：字节加密

import org.springframework.security.crypto.encrypt.BytesEncryptor;
import org.springframework.security.crypto.encrypt.Encryptors;
import org.springframework.security.crypto.keygen.KeyGenerators;

/**
 * <p> 字节加密
 * <p> 参考：https://docs.spring.io/spring-security/site/docs/5.2.1.RELEASE/reference/htmlsingle/#spring-security-crypto-encryption-bytes
 * <p> 参考：https://docs.spring.io/spring-security/site/docs/5.2.1.RELEASE/reference/htmlsingle/#spring-security-crypto-keygenerators
 * @author mk
 *
 */
public class BytesEncryptorTests {

    public static void main(String[] args) {
        // generates a random 8-byte salt that is then hex-encoded
        String salt = KeyGenerators.string().generateKey();
        //
        String password = "your password";
        
        // Use the Encryptors.standard factory method to construct a "standard" BytesEncryptor
        BytesEncryptor bytesEncryptor = Encryptors.standard(password, salt);
        
        byte[] text = "0123456789中文汉字，这是待加密的文字。".getBytes();
        
        byte[] encrypted = bytesEncryptor.encrypt(text); // 加密
        System.out.println(new String(encrypted)); // 密文
        
        byte[] decrypted = bytesEncryptor.decrypt(encrypted); // 解密
        System.out.println(new String(decrypted)); // 明文
    }
}

例子 2：文本加密

import org.springframework.security.crypto.encrypt.Encryptors;
import org.springframework.security.crypto.encrypt.TextEncryptor;
import org.springframework.security.crypto.keygen.KeyGenerators;

/**
 * <p> 文本加密
 * <p> 参考：https://docs.spring.io/spring-security/site/docs/5.2.1.RELEASE/reference/htmlsingle/#spring-security-crypto-encryption-text
 * <p> 参考：https://docs.spring.io/spring-security/site/docs/5.2.1.RELEASE/reference/htmlsingle/#spring-security-crypto-keygenerators
 * @author mk
 *
 */
public class TextEncryptorTests {

    public static void main(String[] args) {
        // generates a random 8-byte salt that is then hex-encoded
        String salt = KeyGenerators.string().generateKey();
        //
        String password = "your password";
        
        // Use the Encryptors.text factory method to construct a standard TextEncryptor
        TextEncryptor textEncryptor = Encryptors.text(password, salt);
        // A TextEncryptor uses a standard BytesEncryptor to encrypt text data. Encrypted results are returned as hex-encoded strings for easy storage on the filesystem or in the database.
        
        String text = "0123456789中文汉字，这是待加密的文字。";
        String encrypted = textEncryptor.encrypt(text); // 加密
        System.out.println(encrypted); // 密文
        
        String decrypted = textEncryptor.decrypt(encrypted); // 解密
        System.out.println(decrypted); // 明文
    }
}