在Java中,AEADBadTagException
异常通常在使用高级加密标准(Advanced Encryption Standard,AES)进行认证加密时发生。它表示认证失败,即密钥或消息的认证标签不匹配。以下是一些可能导致此异常的常见原因以及解决方法的示例代码:
import javax.crypto.*;
import javax.crypto.spec.*;
// 加密
SecretKey secretKey = new SecretKeySpec(keyBytes, "AES");
Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
byte[] encryptedData = cipher.doFinal(plainTextBytes);
// 解密
Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
cipher.init(Cipher.DECRYPT_MODE, secretKey);
byte[] decryptedData = cipher.doFinal(encryptedData);
import javax.crypto.*;
import javax.crypto.spec.*;
// 加密
SecretKey secretKey = new SecretKeySpec(keyBytes, "AES");
Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
byte[] encryptedData = cipher.doFinal(plainTextBytes);
byte[] mac = cipher.getMac();
// 解密
Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
cipher.init(Cipher.DECRYPT_MODE, secretKey);
cipher.updateAAD(mac);
byte[] decryptedData = cipher.doFinal(encryptedData);
import javax.crypto.*;
import javax.crypto.spec.*;
// 加密
SecretKey secretKey = new SecretKeySpec(keyBytes, "AES");
Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
byte[] encryptedData;
try {
encryptedData = cipher.doFinal(plainTextBytes);
} catch (AEADBadTagException e) {
// 处理认证失败的情况
}
// 解密
Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
cipher.init(Cipher.DECRYPT_MODE, secretKey);
byte[] decryptedData;
try {
decryptedData = cipher.doFinal(encryptedData);
} catch (AEADBadTagException e) {
// 处理认证失败的情况
}
请注意,以上示例仅提供了一些常见的解决方法,并不能涵盖所有可能导致AEADBadTagException
异常的情况。具体的解决方法取决于您的应用程序的具体需求和场景。