要实现HTTP接口参数和返回值加密,可以采用对称加密和非对称加密的方式。
对称加密
对称加密算法是加密和解密密钥相同的加密算法,常见的有DES、3DES、AES等。对称加密的加解密速度快,但密钥传输、保密性等存在问题。
在Java中使用AES对称加密方式来对参数和返回值进行加密。使用如下代码:
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;
public class EncryptUtils {
public static String encrypt(String data, String key) throws Exception {
SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes(), "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] encrypted = cipher.doFinal(data.getBytes("UTF-8"));
return Base64.getEncoder().encodeToString(encrypted);
}
public static String decrypt(String data, String key) throws Exception {
SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes(), "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
byte[] original = cipher.doFinal(Base64.getDecoder().decode(data));
return new String(original, "UTF-8");
}
}
其中,AES加密算法使用ECB模式和PKCS5Padding填充方式。
使用示例:
String data = "hello,world!";
String key = "1234567812345678";
String encryptedData = EncryptUtils.encrypt(data, key);
System.out.println("encryptedData: " + encryptedData);
String decryptedData = EncryptUtils.decrypt(encryptedData, key);
System.out.println("decryptedData: " + decryptedData);
非对称加密
非对称加密算法是加密和解密密钥不同的加密算法,常见的有RSA、DSA等。非对称加密算法可以解决对称加密算法中密钥传输的问题,但加解密速度较慢。
在Java中使用RSA非对称加密方式来对参数和返回值进行加密。使用如下代码:
import javax.crypto.Cipher;
import java.security.KeyFactory;
import java.security.PublicKey;
import java.security.spec.X509EncodedKeySpec;
import java.util.Base64;
public class EncryptUtils {
public static String encrypt(String data, String publicKeyStr) throws Exception {
byte[] publicKeyBytes = Base64.getDecoder().decode(publicKeyStr);
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(publicKeyBytes);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
PublicKey publicKey = keyFactory.generatePublic(keySpec);
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
byte[] encrypted = cipher.doFinal(data.getBytes("UTF-8"));
return Base64.getEncoder().encodeToString(encrypted);
}
}
使用示例:
String data = "hello,world!";
String publicKeyStr = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAl3fwTpJNN7M67FvMzbGxtXLyqWJEbq72xrlO9zm7ygXwt1VCNY3hlMbo3a8vUYy+C9l6g5PRNaqtJ9/EI4cSAUCI1Ioo6nLJLR4U035/tlOUgc/dJLxjbbF8f4+m8gdTaPf7cBqQk8hchc3rH9+lv4xHrZwLQv7LQpNytyo+/qLvEVQOyZV+gTsRtJ4RhqLGv8ciLrXvz7tFP6VjH8GHd9bWfIy2LayTDUNXzkS6nM71P8JrM/6DKKUiWryjXJZiaGoVLl7QWGJ8OE/vVla72wX445N4NrxdKeUab1dR60SQTlJqDRaJN3zns+zPBCcy028a/QDK6pf6g1he0QIDAQAB";
String encryptedData = EncryptUtils.encrypt(data, publicKeyStr);
System.out.println("encryptedData: " + encryptedData);
以上就是Java如何实现HTTP接口参数和返回值加密的完整攻略。
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