java - SSL 握手异常

Question

我使用 SSL 连接将 Web 客户端连接到服务器。它可以长时间正常工作。但是从昨天开始它给出了以下错误任何人都可以告诉我原因。

javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLHandshakeException: Received fatal alert: certificate_unknown
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.checkEOF(SSLSocketImpl.java:1172)
        at com.sun.net.ssl.internal.ssl.AppInputStream.read(AppInputStream.java:65)
        at net.schubart.fixme.internal.MessageInput.readExactly(MessageInput.java:166)
        at net.schubart.fixme.internal.MessageInput.readMessage(MessageInput.java:78)
        at cc.aot.itsWeb.ClientWriterThread.run(ClientWriterThread.java:241)
        at java.lang.Thread.run(Thread.java:619)
clientWriter.ready
Caused by: javax.net.ssl.SSLHandshakeException: Received fatal alert: certificate_unknown
        at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174)
        at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:136)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:1586)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:865)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1029)
        at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:621)
        at com.sun.net.ssl.internal.ssl.AppOutputStream.write(AppOutputStream.java:59)
        at java.io.OutputStream.write(OutputStream.java:58)
        at net.schubart.fixme.internal.Message.write(Message.java:267)
        at net.schubart.fixme.internal.MessageOutput.writeMessage(MessageOutput.java:53)

Answer 1

您遇到的问题与证书有关。以下是您在使用安全 SSL 程序之前可能需要熟悉的事项列表。必须有一个信任库、 keystore ，并且必须添加证书。 要将 key 添加到您的 cacerts 文件，如第 6 步，计算机可能会要求您提供您不知道的密码。它很可能是“改变”

1) 使用相应的公钥/私钥创建新的 keystore 和自签名证书:

 keytool -genkeypair -alias "username" -keyalg RSA -validity 7 -keystore keystore

2) 检查 keystore :

keytool -list -v -keystore keystore

3) 导出并检查自签名证书:

keytool -export -alias "username" -keystore keystore -rfc -file "username".cer

4) 将证书导入新的信任库:

keytool -import -alias "username" -file "username".cer -keystore truststore

5) 检查信任库:

keytool -list -v -keystore truststore

6) 添加到 keystore (这是你要找的):

sudo keytool -import -file "username".cer -alias "username" -keystore "path-to-keystore"

在某些系统上，这是在

中找到的

/usr/lib/jvm/<java version folder>/jre/lib/security/cacerts

在其他系统上是这样的

/etc/ssl/certs/java/cacerts

如果您需要更多说明，请查看 Git-Hub 上的这个项目: https://github.com/rabbitfighter81/JSSLInfoCollectionServer这是一个帮助处理 key 的 shell 脚本。 https://github.com/rabbitfighter81/SSLKeytool