Question

我正在运行以下教程： http://download.oracle.com/javase/6/docs/technotes/guides/security/jgss/tutorials/BasicClientServer.html

我收到以下提示：

Connected to server localhost/127.0.0.1
Kerberos username [login]: {I enter my username here}
Kerberos password for login: {I enter my password here}

我收到以下错误：

你能确定这个的根本原因吗？

Exception in thread "main" GSSException: No valid credentials provided (Mechanism level: Attempt to obtain new INITIATE credentials failed! (null))
at sun.security.jgss.krb5.Krb5InitCredential.getTgt(Krb5InitCredential.java:333)
at sun.security.jgss.krb5.Krb5InitCredential.getInstance(Krb5InitCredential.java:128)
at sun.security.jgss.krb5.Krb5MechFactory.getCredentialElement(Krb5MechFactory.java:106)
at sun.security.jgss.krb5.Krb5MechFactory.getMechanismContext(Krb5MechFactory.java:172)
at sun.security.jgss.GSSManagerImpl.getMechanismContext(GSSManagerImpl.java:209)
at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:195)
at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:162)
at demo.SampleClient.main(SampleClient.java:145)
Caused by: javax.security.auth.login.LoginException: Message stream modified (41)
at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:696)
at com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:542)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at javax.security.auth.login.LoginContext.invoke(LoginContext.java:769)
at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)
at javax.security.auth.login.LoginContext$5.run(LoginContext.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.login.LoginContext.invokeCreatorPriv(LoginContext.java:703)
at javax.security.auth.login.LoginContext.login(LoginContext.java:575)
at sun.security.jgss.GSSUtil.login(GSSUtil.java:246)
at sun.security.jgss.krb5.Krb5Util.getTicket(Krb5Util.java:136)
at sun.security.jgss.krb5.Krb5InitCredential$1.run(Krb5InitCredential.java:328)
at java.security.AccessController.doPrivileged(Native Method)
at sun.security.jgss.krb5.Krb5InitCredential.getTgt(Krb5InitCredential.java:325)
... 7 more
Caused by: KrbException: Message stream modified (41)
at sun.security.krb5.KrbKdcRep.check(KrbKdcRep.java:53)
at sun.security.krb5.KrbAsRep.<init>(KrbAsRep.java:96)
at sun.security.krb5.KrbAsReq.getReply(KrbAsReq.java:449)
at sun.security.krb5.Credentials.sendASRequest(Credentials.java:410)
at sun.security.krb5.Credentials.acquireTGT(Credentials.java:378)
at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:662)
... 23 more

Answer 1

当Kerberos域不匹配时，我得到了“消息流已修改（41）”的异常。领域（在系统属性java.security.krb5.realm中）必须完全匹配，包括大写/小写。

Answer 2

我想知道这是否可能（即使设置了注册表项，也为本地管理员设置了锁定）：

http://cr.openjdk.java.net/~weijun/special/krb5winguide-2/raw_files/new/kwin

已知问题

如果还将AD帐户添加到本地管理员组中客户端PC，Microsoft限制此类客户端获取会话密钥 for tickets（即使你将allowtgtsessionkey注册表项设置为1）。解决方法是：忘记您是登录用户，请致电kinit.exe。不要依赖于LSA凭证缓存。

Answer 3

我无法确认这个问题。我的机器上有管理权限，但仍能从LSA获取会话密钥。您应该在JGSS和Krb5LoginModule上启用完全调试输出。分享你的krb5.ini和login.conf。我希望您知道上面的示例无法正常工作，因为您的客户端无法获取本地主机的票证。它必须是在Active Directory中设置了适当SPN的FQDN。

GSS-API Java奇怪的错误

3 个答案: