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我正在寻找基于 Java 中椭圆曲线的密码算法的实现，用于 Android 项目。我找到了这个回购。

我写了一个简短的代码只是为了测试并在https://replit.com上运行它，它工作正常。但是我在 Android 中使用了相同的代码，它抛出了一个异常。

Java 代码

import software.pando.crypto.nacl.*;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;

class Main {
  public static String byteArrayToHex(byte[] a) {
    StringBuilder sb = new StringBuilder(a.length * 2);
    for (byte b : a)
      sb.append(String.format("%02x", b));
    return sb.toString();
  }

  public static void main(String[] args) {

    var aliceKeys = CryptoBox.keyPair();
    var bobKeys = CryptoBox.keyPair();

    var alicePrivateKey = aliceKeys.getPrivate();
    var alicePublicKey = aliceKeys.getPublic();

    DataOutputStream dos = null;
    try {
      dos = new DataOutputStream(new FileOutputStream("ECCPublicKey.txt"));
      dos.writeBytes(byteArrayToHex(alicePublicKey.getEncoded()));
      dos.flush();
    } catch (Exception e) {
      throw new RuntimeException(e);
    } finally {
      if (dos != null) {
        try {
          dos.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
    }

    CryptoBox box = CryptoBox.encrypt(aliceKeys.getPrivate(), bobKeys.getPublic(), "Hello, World!");
    String msg = box.decryptToString(bobKeys.getPrivate(), aliceKeys.getPublic());

    System.out.println("Decrypted: " + msg.toString());

  }
}

安卓

btnBecomeCustomer.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {   
    var cipherText = Encrypt("Hello World!");
    Toast.makeText(MainActivity.this, cipherText, Toast.LENGTH_LONG).show();
}

public static String byteArrayToHex(byte[] a) {
    StringBuilder sb = new StringBuilder(a.length * 2);
    for (byte b : a)
        sb.append(String.format("%02x", b));
    return sb.toString();
}

public static String Encrypt(String plainText) {
    var aliceKeys = CryptoBox.keyPair();
    var bobKeys = CryptoBox.keyPair();

    var alicePrivateKey = aliceKeys.getPrivate();
    var alicePublicKey = aliceKeys.getPublic();

    DataOutputStream dos = null;
    try {
        dos = new DataOutputStream(new FileOutputStream("ECCPublicKey.txt"));
        dos.writeBytes(byteArrayToHex(alicePublicKey.getEncoded()));
        dos.flush();
    } catch (Exception e) {
        throw new RuntimeException(e);
    } finally {
        if (dos != null) {
            try {
                dos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    CryptoBox box = CryptoBox.encrypt(aliceKeys.getPrivate(), bobKeys.getPublic(), plainText);
    var cipherText =  box.toString();

    return cipherText;
}

我收到此错误

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.demoappjava, PID: 12092
java.lang.NoClassDefFoundError: Failed resolution of: Ljava/security/spec/NamedParameterSpec;
    at software.pando.crypto.nacl.CryptoBox.<clinit>(CryptoBox.java:97)
    at software.pando.crypto.nacl.CryptoBox.keyPair(CryptoBox.java:108)
    at com.example.demoappjava.MainActivity.Encrypt(MainActivity.java:484)
    at com.example.demoappjava.MainActivity$7.onClick(MainActivity.java:408)
    at android.view.View.performClick(View.java:7044)
    at android.view.View.performClickInternal(View.java:7017)
    at android.view.View.access$3200(View.java:784)
    at android.view.View$PerformClick.run(View.java:26596)
    at android.os.Handler.handleCallback(Handler.java:873)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6819)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:497)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:912)
 Caused by: java.lang.ClassNotFoundException: Didn't find class "java.security.spec.NamedParameterSpec" on path: DexPathList[[zip file "/data/app/com.example.demoappjava-Uys_XXr7pCGFSFr8O20CdQ==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.demoappjava-Uys_XXr7pCGFSFr8O20CdQ==/lib/arm, /system/lib]]
    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
    at software.pando.crypto.nacl.CryptoBox.<clinit>(CryptoBox.java:97) 
    at software.pando.crypto.nacl.CryptoBox.keyPair(CryptoBox.java:108) 
    at com.example.demoappjava.MainActivity.Encrypt(MainActivity.java:484) 
    at com.example.demoappjava.MainActivity$7.onClick(MainActivity.java:408) 
    at android.view.View.performClick(View.java:7044) 
    at android.view.View.performClickInternal(View.java:7017) 
    at android.view.View.access$3200(View.java:784) 
    at android.view.View$PerformClick.run(View.java:26596) 
    at android.os.Handler.handleCallback(Handler.java:873) 
    at android.os.Handler.dispatchMessage(Handler.java:99) 
    at android.os.Looper.loop(Looper.java:193) 
    at android.app.ActivityThread.main(ActivityThread.java:6819) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:497) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:912) 
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0 回答 0