Question

我想在HotSpot编译器中查看硬件aes-ni指令。我正在使用OpenJDK版本“ 1.8.0_191”

我为此目的编写了一个Java程序，并使用以下命令运行它：

java -XX:+UnlockDiagnosticVMOptions -XX:+UseAES -XX:+UseAESIntrinsics -XX:+PrintAssembly  AES > assembly.txt

但是我看不到硬件aes-ni（例如aesenc）说明。

https://bugs.openjdk.java.net/browse/JDK-7184394说jdk支持aes-ni指令。

我确保该方法正在编译并启用如下所示的+ XX：PrintIntrinsics：

@ 41 com.sun.crypto.provider.AESCrypt::decryptBlock (3852 bytes) (intrinsic) @ 41  
com.sun.crypto.provider.AESCrypt::encryptBlock (953 bytes) (intrinsic) @ 12   
java.lang.Math::addExact (26 bytes) (intrinsic) @ 572  
java.lang.System::arraycopy (0 bytes) (intrinsic) @ 41   
com.sun.crypto.provider.AESCrypt::decryptBlock (3852 bytes) (intrinsic) @ 41  
com.sun.crypto.provider.AESCrypt::encryptBlock (953 bytes) (intrinsic) @ 41  
com.sun.crypto.provider.AESCrypt::decryptBlock (3852 bytes) (intrinsic) @ 41  
com.sun.crypto.provider.AESCrypt::encryptBlock (953 bytes) (intrinsic)

有人可以帮忙吗？谢谢

    import java.io.UnsupportedEncodingException;
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 AES {

    private static SecretKeySpec secretKey;
    private static byte[] key;

    public static void setKey(String myKey)
    {
        MessageDigest sha = null;
        try {
            key = myKey.getBytes("UTF-8");
            sha = MessageDigest.getInstance("SHA-1");
            key = sha.digest(key);
            key = Arrays.copyOf(key, 16);
            secretKey = new SecretKeySpec(key, "AES");
        }
        catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
    }

    public static String encrypt(String strToEncrypt, String secret)
    {
        try
        {
            setKey(secret);
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            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;
    }

热点编译器未生成es-ni指令

0 个答案: