为什么JDK1.8.0u121无法找到kerberos default_tkt_enctypes类型？（KrbException：default_tkt_enctypes不支持默认的etypes）

Question

以下是我的环境详细信息：

KDC服务器：Windows Server 2012

目标机器：Windows 7

JDK版本：Oracle 1.8.0_121（64位）

我在Windows 7机器上运行Java的kinit命令时遇到以下异常：-

C:\Program Files\Java\jdk1.8.0_121\bin>kinit -k -t "C:\Program Files\Apache Software Foundation\Tomcat 8.0\conf\tomcat_ad.keytab" HTTP/dev26.devdevelopment.com@DEVDEVELOPMENT.COM
Exception: krb_error 0 no supported default etypes for default_tkt_enctypes No error
KrbException: no supported default etypes for default_tkt_enctypes
        at sun.security.krb5.Config.defaultEtype(Config.java:844)
        at sun.security.krb5.internal.crypto.EType.getDefaults(EType.java:249)
        at sun.security.krb5.internal.crypto.EType.getDefaults(EType.java:262)
        at sun.security.krb5.KrbAsReqBuilder.build(KrbAsReqBuilder.java:261)
        at sun.security.krb5.KrbAsReqBuilder.send(KrbAsReqBuilder.java:315)
        at sun.security.krb5.KrbAsReqBuilder.action(KrbAsReqBuilder.java:361)
        at sun.security.krb5.internal.tools.Kinit.<init>(Kinit.java:219)
        at sun.security.krb5.internal.tools.Kinit.main(Kinit.java:113)

调试模式下的命令输出：

C:\Program Files\Java\jdk1.8.0_121\bin>kinit -J-Dsun.security.krb5.debug=true -k -t "C:\Program Files\Apache Software Foundation\Tomcat 8.0\conf\tomca
t_ad.keytab" HTTP/dev26.devdevelopment.com@DEVDEVELOPMENT.COM
>>>KinitOptions cache name is C:\Users\devtcadmin\krb5cc_devtcadmin
Principal is HTTP/dev26.devdevelopment.com@DEVDEVELOPMENT.COM
>>> Kinit using keytab
>>> Kinit keytab file name: C:\Program Files\Apache Software Foundation\Tomcat 8.0\conf\tomcat_ad.keytab
Java config name: null
LSA: Found Ticket
LSA: Made NewWeakGlobalRef
LSA: Found PrincipalName
LSA: Made NewWeakGlobalRef
LSA: Found DerValue
LSA: Made NewWeakGlobalRef
LSA: Found EncryptionKey
LSA: Made NewWeakGlobalRef
LSA: Found TicketFlags
LSA: Made NewWeakGlobalRef
LSA: Found KerberosTime
LSA: Made NewWeakGlobalRef
LSA: Found String
LSA: Made NewWeakGlobalRef
LSA: Found DerValue constructor
LSA: Found Ticket constructor
LSA: Found PrincipalName constructor
LSA: Found EncryptionKey constructor
LSA: Found TicketFlags constructor
LSA: Found KerberosTime constructor
LSA: Finished OnLoad processing
Native config name: C:\Windows\krb5.ini
Loaded from native config
>>> Kinit realm name is DEVDEVELOPMENT.COM
>>> Creating KrbAsReq
>>> KrbKdcReq local addresses for dev26 are:

        dev26/192.168.1.229
IPv4 address

        dev26/fe80:0:0:0:78ae:388f:4f63:3717%11
IPv6 address
>>> KdcAccessibility: reset
>>> KeyTabInputStream, readName(): DEVDEVELOPMENT.COM
>>> KeyTabInputStream, readName(): HTTP
>>> KeyTabInputStream, readName(): dev26.devdevelopment.com
>>> KeyTab: load() entry length: 99; type: 18
Looking for keys for: HTTP/dev26.devdevelopment.com@DEVDEVELOPMENT.COM
Added key: 18version: 3
Exception: krb_error 0 no supported default etypes for default_tkt_enctypes No error
KrbException: no supported default etypes for default_tkt_enctypes
        at sun.security.krb5.Config.defaultEtype(Config.java:844)
        at sun.security.krb5.internal.crypto.EType.getDefaults(EType.java:249)
        at sun.security.krb5.internal.crypto.EType.getDefaults(EType.java:262)
        at sun.security.krb5.KrbAsReqBuilder.build(KrbAsReqBuilder.java:261)
        at sun.security.krb5.KrbAsReqBuilder.send(KrbAsReqBuilder.java:315)
        at sun.security.krb5.KrbAsReqBuilder.action(KrbAsReqBuilder.java:361)
        at sun.security.krb5.internal.tools.Kinit.<init>(Kinit.java:219)
        at sun.security.krb5.internal.tools.Kinit.main(Kinit.java:113)

以下是KDC服务器（Windows Server 2012）上ktpass命令的输出，以生成tomcat_ad.keytab文件：-

C:\Users\Administrator>ktpass /out C:\tomcat_ad.keytab /mapuser devtcadmin@DEVDEVELOPMENT.COM /princ HTTP/dev26.devdevelopment.com@DEVDEVELOPMENT.COM /pass ****** /crypto AES256-SHA1 ptype KRB5_NT_PRINCIPAL
    Targeting domain controller: dev.devdevelopment.com
    Using legacy password setting method
    Successfully mapped HTTP/dev26.devdevelopment.com to devtcadmin.
    Key created.
    Output keytab to C:\tomcat_ad.keytab:
    Keytab version: 0x502
    keysize 99 HTTP/dev26.devdevelopment.com@DEVDEVELOPMENT.COM ptype 1 (KRB5_NT_PRINCIPAL) vno 3 etype 0x12 (AES256-SHA1) keylength 32 (0xf20788d7c6f99c385fc91b53c7d9ef55591d314e5340ca1fb9acac1b178c8861)

以下是Windows 7计算机中C：\ Windows处krb5.ini文件的内容：

[libdefaults]
default_realm=DEVDEVELOPMENT.COM
default_keytab_name=“C:\Program Files\Apache Software Foundation\Tomcat 8.0\conf\tomcat_ad.keytab"
default_tkt_enctypes=aes256-cts-hmac-shal-96
default_tgs_enctypes=aes256-cts-hmac-shal-96
permitted_enctypes=aes256-cts-hmac-shal-96
udp_preference_limit=1
forwardable=true

[realms]
DEVDEVELOPMENT.COM={
    kdc=dev.devdevelopment.com:88
}

[domain_realm]
devdevelopment.com=DEVDEVELOPMENT.COM
.devdevelopment.com=DEVDEVELOPMENT.COM

以下是Windows 7计算机上Java的ktab命令的输出：-

C:\Program Files\Java\jdk1.8.0_121\bin>ktab -l -e -t -k "C:\Program Files\Apache Software Foundation\Tomcat 8.0\conf\tomcat_ad.keytab"
Keytab name: C:\Program Files\Apache Software Foundation\Tomcat 8.0\conf\tomcat_ad.keytab
KVNO Timestamp      Principal
---- -------------- ---------------------------------------------------------------------------------------
   3 1/1/70 5:30 AM HTTP/dev26.devdevelopment.com@DEVDEVELOPMENT.COM (18:AES256 CTS mode with HMAC SHA1-96)

我还更新了C：\ Program Files \ Java \ jre1.8.0_121 \ lib \ security和C：\ Program Files \ Java \ jdk1.8.0_121 \ jre \ lib \ security文件夹下的JCE jar文件。

应该采取什么措施来克服此异常？

编辑1（接我的第三条评论）：

以下是第一条的输出针织命令与tomcat_ad.keytab在文件C：\ Program Files文件\的Java \ jre1.8.0_121 \ BIN文件夹： -

C:\Program Files\Java\jdk1.8.0_121\bin>kinit -k -t tomcat_ad.keytab HTTP/dev26.devdevelopment.com
New ticket is stored in cache file C:\Users\devtcadmin\krb5cc_devtcadmin

并且，以下是输出的kinit命令与tomcat_ad.keytab在文件C：\ Program Files文件\ Apache软件基金会\ Tomcat的8.0 \的conf \ tomcat_ad.keytab文件夹，并追加后C：\ Program Files文件\的Java \ jdk1 .8.0_121 \ bin; 在path环境变量中：

C:\Users\devtcadmin>kinit -k -t "C:\Program Files\Apache Software Foundation\Tomcat 8.0\conf\tomcat_ad.keytab" HTTP/dev26.devdevelopment.com@DEVDEVELOPMENT.COM
New ticket is stored in cache file C:\Users\devtcadmin\krb5cc_devtcadmin

但是这次kinit命令处于调试模式，但发出以下异常：

C:\Users\devtcadmin>kinit -J-Dsun.security.krb5.debug=true -k -t "C:\Program Files\Apache Software Foundation\Tomcat 8.5\conf\tomcat_ad.keytab" HTTP/dev26.devdevelopment.com@DEVDEVELOPMENT.COM
>>>KinitOptions cache name is C:\Users\devtcadmin\krb5cc_devtcadmin
Principal is HTTP/dev26.devdevelopment.com@DEVDEVELOPMENT.COM
>>> Kinit using keytab
>>> Kinit keytab file name: C:\Program Files\Apache Software Foundation\Tomcat 8.5\conf\tomcat_ad.keytab
Java config name: null
LSA: Found Ticket
LSA: Made NewWeakGlobalRef
LSA: Found PrincipalName
LSA: Made NewWeakGlobalRef
LSA: Found DerValue
LSA: Made NewWeakGlobalRef
LSA: Found EncryptionKey
LSA: Made NewWeakGlobalRef
LSA: Found TicketFlags
LSA: Made NewWeakGlobalRef
LSA: Found KerberosTime
LSA: Made NewWeakGlobalRef
LSA: Found String
LSA: Made NewWeakGlobalRef
LSA: Found DerValue constructor
LSA: Found Ticket constructor
LSA: Found PrincipalName constructor
LSA: Found EncryptionKey constructor
LSA: Found TicketFlags constructor
LSA: Found KerberosTime constructor
LSA: Finished OnLoad processing
Native config name: C:\Windows\krb5.ini
Loaded from native config
>>> Kinit realm name is DEVDEVELOPMENT.COM
>>> Creating KrbAsReq
>>> KrbKdcReq local addresses for dev26 are:

        dev26/192.168.1.229
IPv4 address

        dev26/fe80:0:0:0:78ae:388f:4f63:3717%11
IPv6 address
>>> KdcAccessibility: reset
Looking for keys for: HTTP/dev26.devdevelopment.com@DEVDEVELOPMENT.COM
Using builtin default etypes for default_tkt_enctypes
default etypes for default_tkt_enctypes: 18 17 16 23.
Exception: krb_error 0 Do not have keys of types listed in default_tkt_enctypes available; only have keys of following type:  No error
KrbException: Do not have keys of types listed in default_tkt_enctypes available; only have keys of following type:
        at sun.security.krb5.internal.crypto.EType.getDefaults(EType.java:280)
        at sun.security.krb5.KrbAsReqBuilder.build(KrbAsReqBuilder.java:261)
        at sun.security.krb5.KrbAsReqBuilder.send(KrbAsReqBuilder.java:315)
        at sun.security.krb5.KrbAsReqBuilder.action(KrbAsReqBuilder.java:361)
        at sun.security.krb5.internal.tools.Kinit.<init>(Kinit.java:219)
        at sun.security.krb5.internal.tools.Kinit.main(Kinit.java:113)

在注释了C：\ Windows \ krb5.ini文件中的这些行后，为什么上述命令有效？为什么在调试模式下kinit命令会输出上述异常？

Answer 1

我以前看过 尝试这个。将密钥表复制到C：\ Program Files \ Java \ jdk1.8.0_121 \ bin目录，然后从该目录中使用下面显示的更简单的命令重试。您不需要将Kerberos领域附加到SPN，因为您已经在krb5.conf中定义了领域，因此我将其删除。

kinit -k -t tomcat_ad.keytab HTTP/dev26.devdevelopment.com

如果仍然不起作用，请确保您确实在\ lib \ security目录中确实具有无限强度的JCE jar文件。尽管您说过做到了，但是Java JRE升级可以覆盖它们。

编辑：在AD用户帐户devtcadmin的“ 帐户”选项卡上，确保选中“ 此帐户支持Kerberos AES 256位加密 ” 框。

如果仍然无法使用，请在Windows 7计算机上的C：\ Windows \ krb5.conf中，注释掉下面的四行，如图所示。不需要它们是因为Kerberos仍将使用尽可能高的加密类型，并且在Windows 7/2008及更高版本中，默认情况下使用TCP，因此您无需设置UDP首选项限制。

#default_tkt_enctypes=aes256-cts-hmac-shal-96
#default_tgs_enctypes=aes256-cts-hmac-shal-96
#permitted_enctypes=aes256-cts-hmac-shal-96
#udp_preference_limit=1

快速浏览一下我的TechNet文章，以获取有关此内容的进一步参考：Kerberos Keytabs –解释