BouncyCastlePemReader.java — netty Source File

Source Code

/*
 * Copyright 2022 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.handler.ssl;

import io.netty.handler.ssl.util.BouncyCastleUtil;
import io.netty.util.CharsetUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.openssl.PEMDecryptorProvider;
import org.bouncycastle.openssl.PEMEncryptedKeyPair;
import org.bouncycastle.openssl.PEMKeyPair;
import org.bouncycastle.openssl.PEMParser;
import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
import org.bouncycastle.openssl.jcajce.JceOpenSSLPKCS8DecryptorProviderBuilder;
import org.bouncycastle.openssl.jcajce.JcePEMDecryptorProviderBuilder;
import org.bouncycastle.operator.InputDecryptorProvider;
import org.bouncycastle.operator.OperatorCreationException;
import org.bouncycastle.pkcs.PKCS8EncryptedPrivateKeyInfo;
import org.bouncycastle.pkcs.PKCSException;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.security.PrivateKey;

final class BouncyCastlePemReader {
    private static final InternalLogger logger = InternalLoggerFactory.getInstance(BouncyCastlePemReader.class);

    /**
     * Generates a new {@link PrivateKey}.
     *
     * @param keyInputStream an input stream for a PKCS#1 or PKCS#8 private key in PEM format.
     * @param keyPassword the password of the {@code keyFile}.
     *                    {@code null} if it's not password-protected.
     * @return generated {@link PrivateKey}.
     */
    public static PrivateKey getPrivateKey(InputStream keyInputStream, String keyPassword) {
        if (!BouncyCastleUtil.isBcPkixAvailable()) {
            if (logger.isDebugEnabled()) {
                logger.debug("Bouncy castle provider is unavailable.", BouncyCastleUtil.unavailabilityCauseBcPkix());
            }
            return null;
        }
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