java如何加载文件私有文件类型是pem

Question

我加载private（private.pem） 我的代码是：

    FileReader fileReader = new FileReader(new File(private.pem));
    PEMReader r = new PEMReader(fileReader, new DefaultPasswordFinder("mypass".toCharArray()));
    try {
        KeyPair kp = (KeyPair) r.readObject();
    } catch (IOException ex) {
        throw new IOException("The private key could not be decrypted", ex);
    } finally {
        r.close();
        fileReader.close();
    }

错误是： 原因：

java.io.IOException: problem creating RSA private key: java.security.NoSuchProviderException: No such provider: BC at org.bouncycastle.openssl.PEMReader.readObject(Unknown Source)

谢谢