安全性中的addProvider方法返回未定义的

Question

我正在尝试使用addProvider方法，即使它已导入import java.security.Security;

，也似乎未定义

package com.example.fingerprient2;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.KeyStore;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;

import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.Signature;

import java.security.Security;

import java.security.interfaces.ECPublicKey;

import java.security.spec.InvalidKeySpecException;
import java.security.spec.X509EncodedKeySpec;
import java.util.Arrays;
import java.security.Security;
import org.bouncycastle.jcajce.BCFKSLoadStoreParameter;
import org.bouncycastle.jce.ECNamedCurveTable;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.jce.spec.ECParameterSpec;
import android.security.keystore.KeyProperties;
import javax.crypto.KeyGenerator;

public class EnCryptor {



    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
    KeyPairGenerator kpg = KeyPairGenerator.getInstance(
            KeyProperties.KEY_ALGORITHM_EC, "AndroidKeyStore");
    KeyGenerator keyGenerator =KeyGenerator.getInstance(KeyProperties.KEY_ALGORITHM_EC ,"AndroidKeyStore");

}

有什么帮助知道为什么为什么没有出现addProvider？

Answer 1

因为您不在可以调用方法的范围内。需要从函数或初始化程序中调用它：

public class Encryptor {
    public void initialize() {
        Security.addProvider(new BouncyCastleProvider());
    }
}