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android keymaster 怎么获取权限

小樊
86
2024-11-27 08:17:44
栏目: 编程语言

要获取Android Keymaster权限,请按照以下步骤操作:

  1. 在AndroidManifest.xml文件中添加权限声明:
<uses-permission android:name="android.permission.USE_KEYSTORE" />
<uses-feature android:name="android.hardware.keymaster" />
  1. 检查设备是否支持Keymaster模块:
import android.security.keystore.KeyProperties;

boolean isKeymasterAvailable() {
    try {
        KeyProperties keyProperties = new KeyProperties.Builder().setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_NONE).build();
        return KeyProperties.isKeymasterFeatureAvailable(keyProperties);
    } catch (Exception e) {
        return false;
    }
}
  1. 请求Keymaster权限(针对Android 6.0及以上版本):
import android.Manifest;
import android.content.pm.PackageManager;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

private static final int KEYSTORE_PERMISSION_REQUEST_CODE = 1;

private void requestKeystorePermission() {
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.USE_KEYSTORE) != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.USE_KEYSTORE}, KEYSTORE_PERMISSION_REQUEST_CODE);
    } else {
        // Permission already granted, you can proceed with using Keymaster
    }
}
  1. 处理权限请求结果:
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    if (requestCode == KEYSTORE_PERMISSION_REQUEST_CODE) {
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            // Permission granted, you can proceed with using Keymaster
        } else {
            // Permission denied, show a message to the user
        }
    }
}

完成以上步骤后,您可以在应用中使用Android Keymaster API。请注意,Keymaster API仅在Android 9(API级别28)及更高版本中受支持。在使用Keymaster API之前,请确保您的应用已针对这些版本进行了适当的配置。

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