[英]SSL connection from Java client (Eclipse Paho) to mosquitto broker: “unknown_ca”
我們正在研究Android的推送通知平台(谷歌C2DM的故障轉移)我正在使用Eclipse Paho Java客戶端連接到mosquitto broker(1.0.3)。 代理安裝在Ubuntu 12.04(AWS EC2實例)上我使用非加密TCP連接成功將客戶端連接到服務器。 順便說一句,在調整內核參數之后,我能夠在中型EC2機器上向一個代理實例打開100K並發客戶端。 好工作,蚊子!
現在我正在嘗試使用SSL建立安全連接。 我想使用客戶端證書對客戶端進行身份驗證。 我按照mosquito_tls頁面中的說明進行了操作,並為服務器和客戶端生成了密鑰和自簽名證書。 配置服務器以使用SSL。
對於客戶端部分,我查看了mosquitto_tls_set的簽名,並注意到它需要CA證書,客戶端密鑰和證書文件。 我認為CA證書用於客戶端驗證服務器,而客戶端密鑰和證書用於服務器驗證客戶端。 我對嗎?
所以我在這里是我在Java方面所做的:
當我進行連接時,我從mosquitto收到以下錯誤
OpenSSL Error: error:140890B2:SSL routines:SSL3_GET_CLIENT_CERTIFICATE:no certificate returned
Socket read error on client (null), disconnecting.
編輯:現在我在客戶端看到以下異常
javax.net.ssl.SSLHandshakeException: Received fatal alert: unknown_ca
這是完整的代碼
static SSLSocketFactory getSocketFactory (final String caCrtFile, final String crtFile, final String keyFile, final String password) throws Exception
{
Security.addProvider(new BouncyCastleProvider());
PEMReader reader = new PEMReader(new InputStreamReader(new ByteArrayInputStream(Files.readAllBytes(Paths.get(caCrtFile)))));
X509Certificate caCert = (X509Certificate)reader.readObject();
reader.close();
reader = new PEMReader(new InputStreamReader(new ByteArrayInputStream(Files.readAllBytes(Paths.get(crtFile)))));
X509Certificate cert = (X509Certificate)reader.readObject();
reader.close();
reader = new PEMReader(
new InputStreamReader(new ByteArrayInputStream(Files.readAllBytes(Paths.get(keyFile)))),
new PasswordFinder() {
public char[] getPassword() {
return password.toCharArray();
}
}
);
KeyPair key = (KeyPair)reader.readObject();
reader.close();
KeyStore caKs = KeyStore.getInstance("JKS");
caKs.load(null, null);
caKs.setCertificateEntry("ca-certificate", caCert);
TrustManagerFactory tmf = TrustManagerFactory.getInstance("PKIX");
tmf.init(caKs);
KeyStore ks = KeyStore.getInstance("JKS");
ks.load(null, null);
ks.setCertificateEntry("certificate", cert);
ks.setKeyEntry("private-key", key.getPrivate(), password.toCharArray(), new java.security.cert.Certificate[]{cert});
//ks.setKeyEntry("public-key", key.getPublic(), password.toCharArray(), new java.security.cert.Certificate[]{cert});
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
kmf.init(ks, password.toCharArray());
SSLContext context = SSLContext.getInstance("SSLv3");
context.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
return context.getSocketFactory();
}
mosquito.conf看起來像這樣
# general options
pid_file /home/ubuntu/mosquitto.pid
# persistence
queue_qos0_messages false
persistence false
# logging
log_dest stdout
connection_messages true
log_timestamp false
# default listener
# disable default listener (open only SSL listener)
#port 1883
#max_connections -1
# SSL listener
listener 1883
cafile /home/ubuntu/etc/ca.crt
certfile /home/ubuntu/etc/server.crt
keyfile /home/ubuntu/etc/server.key
require_certificate true
use_identity_as_username true
max_connections -1
好吧,經過mosquitto開發人員(thx,Roger Light)的一些支持后,我們發現了問題所在。 生成證書(公司,組織單位,公用名)時提供的詳細信息在CA,客戶端和服務器證書中必須不同。 否則代碼可以進行一些小的更改。 為了清楚起見,我在這里重新發布了正確的代碼和一些注釋:
import java.io.*;
import java.nio.file.*;
import java.security.*;
import java.security.cert.*;
import java.security.interfaces.*;
import javax.net.ssl.*;
import org.bouncycastle.jce.provider.*;
import org.bouncycastle.openssl.*;
static SSLSocketFactory getSocketFactory (final String caCrtFile, final String crtFile, final String keyFile, final String password) throws Exception
{
Security.addProvider(new BouncyCastleProvider());
// load CA certificate
PEMReader reader = new PEMReader(new InputStreamReader(new ByteArrayInputStream(Files.readAllBytes(Paths.get(caCrtFile)))));
X509Certificate caCert = (X509Certificate)reader.readObject();
reader.close();
// load client certificate
reader = new PEMReader(new InputStreamReader(new ByteArrayInputStream(Files.readAllBytes(Paths.get(crtFile)))));
X509Certificate cert = (X509Certificate)reader.readObject();
reader.close();
// load client private key
reader = new PEMReader(
new InputStreamReader(new ByteArrayInputStream(Files.readAllBytes(Paths.get(keyFile)))),
new PasswordFinder() {
public char[] getPassword() {
return password.toCharArray();
}
}
);
KeyPair key = (KeyPair)reader.readObject();
reader.close();
// CA certificate is used to authenticate server
KeyStore caKs = KeyStore.getInstance("JKS");
caKs.load(null, null);
caKs.setCertificateEntry("ca-certificate", caCert);
TrustManagerFactory tmf = TrustManagerFactory.getInstance("PKIX");
tmf.init(caKs);
// client key and certificates are sent to server so it can authenticate us
KeyStore ks = KeyStore.getInstance("JKS");
ks.load(null, null);
ks.setCertificateEntry("certificate", cert);
ks.setKeyEntry("private-key", key.getPrivate(), password.toCharArray(), new java.security.cert.Certificate[]{cert});
KeyManagerFactory kmf = KeyManagerFactory.getInstance("PKIX");
kmf.init(ks, password.toCharArray());
// finally, create SSL socket factory
SSLContext context = SSLContext.getInstance("TLSv1");
context.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
return context.getSocketFactory();
}
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