Question

我正在尝试使用spring-security-kerberos扩展来使用kerberos实现SSO。

我创建了一个keytab文件，尝试访问我的webapp时出现以下错误：

GSSException: Failure unspecified at GSS-API level (Mechanism level: Checksum failed)

我尝试根据this post测试我的keytab。

keytab是使用以下命令创建的：

ktpass /out http-web.keytab /mapuser testing@MYDOMAIN.COM /princ HTTP/testing@MYDOMAIN.COM /pass myPass /ptype KRB5_NT_PRINCIPAL -crypto RC4-HMAC-NT /kvno 0

我的krb5.conf如下

[libdefaults]
default_realm = MYDOMAIN.COM
permitted_enctypes =  aes256-cts arcfour-hmac-md5 aes128-cts rc4-hmac des3-cbc-sha1 des-cbc-md5 des-cbc-crc
default_tgs_enctypes = aes256-cts arcfour-hmac-md5 aes128-cts rc4-hmac des3-cbc-sha1 des-cbc-md5 des-cbc-crc
default_tkt_enctypes = aes256-cts arcfour-hmac-md5 aes128-cts rc4-hmac des3-cbc-sha1 des-cbc-md5 des-cbc-crc
kdc_timesync = 1
ccache_type = 4
forwardable = true
proxiable = true

[realms]
MYDOMAIN.COM = {
kdc = controller1.mydomain.com:88
kdc = controler2.mydomain.com:88
kdc = controller3.mydomain.com:88
admin_server = controller3.mydomain.com
default_domain = MYDOMAIN.COM
}

[domain_realm]
.mydomain.com = MYDOMAIN.COM
mydomain.com = MYDOMAIN.COM

[login]
krb4_convert = true
krb4_get_tickets = false

我收到以下错误：

 KDC has no support for encryption type (14)

我已经尝试为SPN帐户启用DES，AES-128和AES-256，但它没有解决问题。

我在这里缺少什么？

谢谢，利奥尔

Answer 1

刚刚反对KrbException＆＃34; KDC不支持enryption类型（14）＆＃34;连续几天。我访问了很多地方，包括一些深入的MSDN博客文章（来自Hongwei Sun，Sebastian Canevari）我无法提及缺乏声誉。

谢谢你提到kvno 0和dsiabling DES，它现在也适用于我。

最后归结为我用

设置了用户帐户

userAccountControl：0d66048或0x10200，匹配0b10000001000000000 或ADS_UF_DONT_EXPIRE_PASSWD（0x00010000）和ADS_UF_NORMAL_ACCOUNT（0x00000200）但未设置UF_USE_DES_KEY_ONLY（0x200000）

和

msDS-SupportedEncryptionTypes：0d16或0x10，匹配0b10000或AES256-CTS-HMAC-SHA1-96（0x10）但未设置RC4-HMAC（0x04）。

ldapsearch -h masterdc.localnet.org -D 'spn_hostname' -w '*password*' -b 'ou=Accounts,dc=localnet,dc=org' -s sub 'userPrincipalName=HTTP/hostname.localnet.org@LOCALNET.ORG' distinguishedName servicePrincipalName userPrincipalName msDS-SupportedEncryptionTypes userAccountControl
# extended LDIF
#
# LDAPv3
# base <ou=Accounts,dc=localnet,dc=org> with scope subtree
# filter: userPrincipalName=HTTP/hostname.localnet.org@LOCALNET.ORG
# requesting: distinguishedName servicePrincipalName userPrincipalName msDS-SupportedEncryptionTypes userAccountControl
#

# spn_hostname, DokSvc, Services, Accounts, localnet.org
dn: CN=spn_hostname,OU=DokSvc,OU=Services,OU=Accounts,DC=localnet,DC=org
distinguishedName: CN=spn_hostname,OU=DokSvc,OU=Services,OU=Accounts,DC=localnet,DC=org
userAccountControl: 66048
userPrincipalName: HTTP/hostname.localnet.org@LOCALNET.ORG
servicePrincipalName: HTTP/hostname.localnet.org
servicePrincipalName: HTTP/hostname.localnet.org@LOCALNET.ORG
msDS-SupportedEncryptionTypes: 16

# search result
search: 2
result: 0 Success

# numResponses: 2
# numEntries: 1

在我的/etc/krb5.conf中有了这个和以下内容我可以重复地激发＆＃34; KrbException KDC不支持enryption类型（14）＆＃34;从default_tkt_enctypes中删除rc4-hmac时。

的/etc/krb5.conf：

[logging]
  default = FILE:/var/log/krb5libs.log
  kdc = FILE:/var/log/krb5kdc.log
  admin_server = FILE:/var/log/kadmind.log
[libdefaults]
  default_realm = LOCALNET.DE
  default_tkt_enctypes = aes256-cts
  default_tgs_enctypes = aes256-cts
  permitted_enctypes = aes256-cts
[realms]
LOCALNET.ORG = {
  kdc = masterdc.localnet.org:88
  admin_server = masterdc.localnet.org
  default_domain = LOCALNET.ORG
}
[domain_realm]
  .localnet.org = LOCALNET.ORG
  localnet.org = LOCALNET.ORG
[appdefaults]
  autologin = true
  forward = true
  forwardable = true
  encrypt = true

但是，如果您将其更改为default_tkt_enctypes = aes256-cts rc4-hmac，则会成功。

请注意，您也可以省略在/etc/krb5.conf中指定default_tkt_enctypes指令，以使其正常工作。

Using builtin default etypes for default_tkt_enctypes
default etypes for default_tkt_enctypes: 18 17 16 23.

因此，Windows Server 2008 SP2 Active Directory在预身份验证阶段明确要求RC4-HMAC：

         PA-ETYPE-INFO2 etype = 23, salt = null, s2kparams = null

我已在JDK的jre / lib / security文件夹中更新了JCE 1.8.0策略文件，以便支持AES256。

亲切的问候，斯蒂芬

在

下指定了enctype

Kerberos参数 http://www.iana.org/assignments/kerberos-parameters/kerberos-parameters.xhtml

etype   encryption type     Reference
1   des-cbc-crc     [RFC3961]
3   des-cbc-md5     [RFC3961]
17  aes128-cts-hmac-sha1-96     [RFC3962]
18  aes256-cts-hmac-sha1-96     [RFC3962]
23  rc4-hmac    [RFC4757]

失败：

java -cp /somepath/krb5.jar -Dsun.security.krb5.debug=true sun.security.krb5.internal.tools.Kinit -k -t /somepath/spn_hostname.keytab HTTP/hostname.localnet.org@LOCALNET.ORG
>>>KinitOptions cache name is /tmp/krb5cc_723
Principal is HTTP/hostname.localnet.org@LOCALNET.ORG
>>> Kinit using keytab
>>> Kinit keytab file name: /somepath/spn_hostname.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 LOCALNET.ORG
>>> Creating KrbAsReq
>>> KrbKdcReq local addresses for hostname.localnet.org are:

        hostname.localnet.org/192.168.1.2
IPv4 address
>>> KdcAccessibility: reset
>>> KeyTabInputStream, readName(): LOCALNET.ORG
>>> KeyTabInputStream, readName(): HTTP
>>> KeyTabInputStream, readName(): hostname.localnet.org
>>> KeyTab: load() entry length: 64; type: 1
>>> KeyTabInputStream, readName(): LOCALNET.ORG
>>> KeyTabInputStream, readName(): HTTP
>>> KeyTabInputStream, readName(): hostname.localnet.org
>>> KeyTab: load() entry length: 64; type: 3
>>> KeyTabInputStream, readName(): LOCALNET.ORG
>>> KeyTabInputStream, readName(): HTTP
>>> KeyTabInputStream, readName(): hostname.localnet.org
>>> KeyTab: load() entry length: 72; type: 23
>>> KeyTabInputStream, readName(): LOCALNET.ORG
>>> KeyTabInputStream, readName(): HTTP
>>> KeyTabInputStream, readName(): hostname.localnet.org
>>> KeyTab: load() entry length: 88; type: 18
>>> KeyTabInputStream, readName(): LOCALNET.ORG
>>> KeyTabInputStream, readName(): HTTP
>>> KeyTabInputStream, readName(): hostname.localnet.org
>>> KeyTab: load() entry length: 72; type: 17
Looking for keys for: HTTP/hostname.localnet.org@LOCALNET.ORG
Added key: 17version: 0
Added key: 18version: 0
Added key: 23version: 0
Found unsupported keytype (3) for HTTP/hostname.localnet.org@LOCALNET.ORG
Found unsupported keytype (1) for HTTP/hostname.localnet.org@LOCALNET.ORG
default etypes for default_tkt_enctypes: 18.
>>> KrbAsReq creating message
>>> KrbKdcReq send: kdc=masterdc.localnet.org UDP:88, timeout=30000, number of retries =3, #bytes=216
>>> KDCCommunication: kdc=masterdc.localnet.org UDP:88, timeout=30000,Attempt =1, #bytes=216
>>> KrbKdcReq send: #bytes read=194
>>>Pre-Authentication Data:
         PA-DATA type = 19
         PA-ETYPE-INFO2 etype = 18, salt = LOCALNET.ORGHTTPhostname.localnet.org, s2kparams = null

>>>Pre-Authentication Data:
         PA-DATA type = 2
         PA-ENC-TIMESTAMP
>>>Pre-Authentication Data:
         PA-DATA type = 16

>>>Pre-Authentication Data:
         PA-DATA type = 15

>>> KdcAccessibility: remove masterdc.localnet.org:88
>>> KDCRep: init() encoding tag is 126 req type is 11
>>>KRBError:
         sTime is Tue Jan 17 18:49:14 CET 2017 1484675354000
         suSec is 822386
         error code is 25
         error Message is Additional pre-authentication required
         sname is krbtgt/LOCALNET.ORG@LOCALNET.ORG
         eData provided.
         msgType is 30
>>>Pre-Authentication Data:
         PA-DATA type = 19
         PA-ETYPE-INFO2 etype = 18, salt = LOCALNET.ORGHTTPhostname.localnet.org, s2kparams = null

>>>Pre-Authentication Data:
         PA-DATA type = 2
         PA-ENC-TIMESTAMP
>>>Pre-Authentication Data:
         PA-DATA type = 16

>>>Pre-Authentication Data:
         PA-DATA type = 15

KrbAsReqBuilder: PREAUTH FAILED/REQ, re-send AS-REQ
default etypes for default_tkt_enctypes: 18.
Looking for keys for: HTTP/hostname.localnet.org@LOCALNET.ORG
Added key: 17version: 0
Added key: 18version: 0
Added key: 23version: 0
Found unsupported keytype (3) for HTTP/hostname.localnet.org@LOCALNET.ORG
Found unsupported keytype (1) for HTTP/hostname.localnet.org@LOCALNET.ORG
Looking for keys for: HTTP/hostname.localnet.org@LOCALNET.ORG
Added key: 17version: 0
Added key: 18version: 0
Added key: 23version: 0
Found unsupported keytype (3) for HTTP/hostname.localnet.org@LOCALNET.ORG
Found unsupported keytype (1) for HTTP/hostname.localnet.org@LOCALNET.ORG
default etypes for default_tkt_enctypes: 18.
>>> EType: sun.security.krb5.internal.crypto.Aes256CtsHmacSha1EType
>>> KrbAsReq creating message
>>> KrbKdcReq send: kdc=masterdc.localnet.org UDP:88, timeout=30000, number of retries =3, #bytes=305
>>> KDCCommunication: kdc=masterdc.localnet.org UDP:88, timeout=30000,Attempt =1, #bytes=305
>>> KrbKdcReq send: #bytes read=93
>>> KdcAccessibility: remove masterdc.localnet.org:88
>>> KDCRep: init() encoding tag is 126 req type is 11
>>>KRBError:
         sTime is Tue Jan 17 18:49:14 CET 2017 1484675354000
         suSec is 25186
         error code is 14
         error Message is KDC has no support for encryption type
         sname is krbtgt/LOCALNET.ORG@LOCALNET.ORG
         msgType is 30
Exception: krb_error 14 KDC has no support for encryption type (14) KDC has no support for encryption type
KrbException: KDC has no support for encryption type (14)
        at sun.security.krb5.KrbAsRep.<init>(Unknown Source)
        at sun.security.krb5.KrbAsReqBuilder.send(Unknown Source)
        at sun.security.krb5.KrbAsReqBuilder.action(Unknown Source)
        at sun.security.krb5.internal.tools.Kinit.<init>(Unknown Source)
        at sun.security.krb5.internal.tools.Kinit.main(Unknown Source)
Caused by: KrbException: Identifier doesn't match expected value (906)
        at sun.security.krb5.internal.KDCRep.init(Unknown Source)
        at sun.security.krb5.internal.ASRep.init(Unknown Source)
        at sun.security.krb5.internal.ASRep.<init>(Unknown Source)
        ... 5 more

成功：

java -cp /home/wls0/webdav/krb5.jar -Dsun.security.krb5.debug=true sun.security.krb5.internal.tools.Kinit -k -t /somepath/spn_hostname.keytab HTTP/hostname.localnet.org@LOCALNET.ORG
>>>KinitOptions cache name is /tmp/krb5cc_723
Principal is HTTP/hostname.localnet.org@LOCALNET.ORG
>>> Kinit using keytab
>>> Kinit keytab file name: /somepath/spn_hostname.keytab
Java config name: null
Native config name: /etc/krb5.conf
Loaded from native config
>>> Kinit realm name is LOCALNET.ORG
>>> Creating KrbAsReq
>>> KrbKdcReq local addresses for hostname.localnet.org are:

        hostname.localnet.org/192.168.1.2
IPv4 address
>>> KdcAccessibility: reset
>>> KeyTabInputStream, readName(): LOCALNET.ORG
>>> KeyTabInputStream, readName(): HTTP
>>> KeyTabInputStream, readName(): hostname.localnet.org
>>> KeyTab: load() entry length: 64; type: 1
>>> KeyTabInputStream, readName(): LOCALNET.ORG
>>> KeyTabInputStream, readName(): HTTP
>>> KeyTabInputStream, readName(): hostname.localnet.org
>>> KeyTab: load() entry length: 64; type: 3
>>> KeyTabInputStream, readName(): LOCALNET.ORG
>>> KeyTabInputStream, readName(): HTTP
>>> KeyTabInputStream, readName(): hostname.localnet.org
>>> KeyTab: load() entry length: 72; type: 23
>>> KeyTabInputStream, readName(): LOCALNET.ORG
>>> KeyTabInputStream, readName(): HTTP
>>> KeyTabInputStream, readName(): hostname.localnet.org
>>> KeyTab: load() entry length: 88; type: 18
>>> KeyTabInputStream, readName(): LOCALNET.ORG
>>> KeyTabInputStream, readName(): HTTP
>>> KeyTabInputStream, readName(): hostname.localnet.org
>>> KeyTab: load() entry length: 72; type: 17
Looking for keys for: HTTP/hostname.localnet.org@LOCALNET.ORG
Added key: 17version: 0
Added key: 18version: 0
Added key: 23version: 0
Found unsupported keytype (3) for HTTP/hostname.localnet.org@LOCALNET.ORG
Found unsupported keytype (1) for HTTP/hostname.localnet.org@LOCALNET.ORG
default etypes for default_tkt_enctypes: 23 18.
>>> KrbAsReq creating message
>>> KrbKdcReq send: kdc=masterdc.localnet.org UDP:88, timeout=30000, number of retries =3, #bytes=180
>>> KDCCommunication: kdc=masterdc.localnet.org UDP:88, timeout=30000,Attempt =1, #bytes=180
>>> KrbKdcReq send: #bytes read=201
>>>Pre-Authentication Data:
         PA-DATA type = 19
         PA-ETYPE-INFO2 etype = 18, salt = LOCALNET.ORGHTTPhostname.localnet.org, s2kparams = null
         PA-ETYPE-INFO2 etype = 23, salt = null, s2kparams = null

>>>Pre-Authentication Data:
         PA-DATA type = 2
         PA-ENC-TIMESTAMP
>>>Pre-Authentication Data:
         PA-DATA type = 16

>>>Pre-Authentication Data:
         PA-DATA type = 15

>>> KdcAccessibility: remove masterdc.localnet.org
>>> KDCRep: init() encoding tag is 126 req type is 11
>>>KRBError:
         sTime is Tue Jan 17 19:11:56 CET 2017 1484676716000
         suSec is 116308
         error code is 25
         error Message is Additional pre-authentication required
         sname is krbtgt/LOCALNET.ORG@LOCALNET.ORG
         eData provided.
         msgType is 30
>>>Pre-Authentication Data:
         PA-DATA type = 19
         PA-ETYPE-INFO2 etype = 18, salt = LOCALNET.ORGHTTPhostname.localnet.org, s2kparams = null
         PA-ETYPE-INFO2 etype = 23, salt = null, s2kparams = null

>>>Pre-Authentication Data:
         PA-DATA type = 2
         PA-ENC-TIMESTAMP
>>>Pre-Authentication Data:
         PA-DATA type = 16

>>>Pre-Authentication Data:
         PA-DATA type = 15

KrbAsReqBuilder: PREAUTH FAILED/REQ, re-send AS-REQ
default etypes for default_tkt_enctypes: 23 18.
Looking for keys for: HTTP/hostname.localnet.org@LOCALNET.ORG
Added key: 17version: 0
Added key: 18version: 0
Added key: 23version: 0
Found unsupported keytype (3) for HTTP/hostname.localnet.org@LOCALNET.ORG
Found unsupported keytype (1) for HTTP/hostname.localnet.org@LOCALNET.ORG
Looking for keys for: HTTP/hostname.localnet.org@LOCALNET.ORG
Added key: 17version: 0
Added key: 18version: 0
Added key: 23version: 0
Found unsupported keytype (3) for HTTP/hostname.localnet.org@LOCALNET.ORG
Found unsupported keytype (1) for HTTP/hostname.localnet.org@LOCALNET.ORG
default etypes for default_tkt_enctypes: 23 18.
>>> EType: sun.security.krb5.internal.crypto.Aes256CtsHmacSha1EType
>>> KrbAsReq creating message
>>> KrbKdcReq send: kdc=masterdc.localnet.org UDP:88, timeout=30000, number of retries =3, #bytes=269
>>> KDCCommunication: kdc=masterdc.localnet.org UDP:88, timeout=30000,Attempt =1, #bytes=269
>>> KrbKdcReq send: #bytes read=94
>>> KrbKdcReq send: kdc=masterdc.localnet.org TCP:88, timeout=30000, number of retries =3, #bytes=269
>>> KDCCommunication: kdc=masterdc.localnet.org TCP:88, timeout=30000,Attempt =1, #bytes=269
>>>DEBUG: TCPClient reading 1615 bytes
>>> KrbKdcReq send: #bytes read=1615
>>> KdcAccessibility: remove masterdc.localnet.org
Looking for keys for: HTTP/hostname.localnet.org@LOCALNET.ORG
Added key: 17version: 0
Added key: 18version: 0
Added key: 23version: 0
Found unsupported keytype (3) for HTTP/hostname.localnet.org@LOCALNET.ORG
Found unsupported keytype (1) for HTTP/hostname.localnet.org@LOCALNET.ORG
>>> EType: sun.security.krb5.internal.crypto.Aes256CtsHmacSha1EType
>>> KrbAsRep cons in KrbAsReq.getReply HTTP/hostname.localnet.org
New ticket is stored in cache file /tmp/krb5cc_723

PS：您可能希望从Windows JDK中提取Kerberos 5工具，因为Oracle已从JDK 1.6开始删除它。这为您提供了在Linux平台上使用参数（-Dsun.security.krb5.debug = true）的额外调试输出。

mkdir sun.security.krb5
cd sun.security.krb5
"C:\Oracle\Java\jdk1.8.0_112\bin\jar.exe" -xf C:\Oracle\Java\jre1.8.0_112\lib\rt.jar sun\security\krb5
"C:\Oracle\Java\jdk1.8.0_112\bin\jar.exe" -cf krb5.jar sun\security\krb5
dir

这适用于JDK-6910497：Kinit类缺失 http://bugs.java.com/bugdatabase/view_bug.do?bug_id=6910497

Answer 2

终于搞定了：在为Oracle JDK 6实施kerberos身份验证时，应该使用RC4-HMAC加密，因此应该为用户帐户禁用DES和AES支持。

为什么我首先检查它们是另一个故事......

Answer 3

我的解决方案是通过帐户选项卡上的 Active Directory 用户和计算机工具检查 AD 用户的这两个选项：

Answer 4

在我的案例中有什么帮助是开关

# default_tkt_enctypes = ...
# default_tgs_enctypes = ...
# permitted_enctypes   = ...

我在krb5.conf中评论了所有这些：

super.init(collection: FUIArray.init(query: query), populateCell: populateCell)

我猜这是rc4-hmac编码的默认设置，它是最兼容的。

我的SPN帐户中的Active Directory不需要任何特殊设置。

Windows Server 2008，Weblogic 10.3.6，Oracle JDK 1.7

KDC不支持加密类型（14）

4 个答案: