NAC authentication via Windows AD
Hi,
we have a Nac enviroment with users that are defined on the ACS. Also the groups are defined on this machine.
The problem is that we have to move all the users from the ACS to the domain controller, so all the users will become AD users.
In which way we have to configure the NAC enviroment to permit the authentication via Active Directory instead of Radius that runs on the ACS?
Thanks a lot!
Leonardo
You have to create a map rule if you have two or
more Roles authenticating in the same LDAP Auth Server
and not if you have two or more auth servers
If the users authenticating today in Radius Server ACS is associated with a single Role XYZ, then you can configure the LDAP Server linking users to the same Role XYZ.
You will have two providers for the same Role.
Similar Messages
-
SAP User Authentication via Windows Active Directory
The non-profit company I work for as an SAP Security Admin has been using SAP since 1999. We are currently running ECC 6.0, BI 7.0, and CRM 7.0. With fewer than 300 SAP users, we have not implemented CUA, so each of our multiple clients in these systems is managed independently.
The company recently licensed and implemented some non-SAP software to be used by all of our employees (~1200) in keeping track of & catagorizing their work time; a very handy feature of this software is that it depends upon Windows Active Directory for user authentication. Therefore, each employee logs into this time-keeping package by entering his/her standard PC userID & password. If you can log onto your PC, you can log into the time-keeping software.
That got me thinking & researching, because our SAP users - especially those who have access to three or more SAP clients - must maintain their passwords independently in each SAP client that they hope to access in the future. I'm certainly not the first person who has thought of how nice it would be to permit SAP users to log into all SAP clients across the landscape in which they have defined userIDs, using the same password that they are using to log into their PCs (i.e., the password that is stored & maintained in Windows Active Directory). My quest has led me to find presentations on this topic that typically involve modules we aren't using & very complicated configurations that we really lack the time & resources to employ; or, to third-party solution providers who claim to be certified SAP partners who would love to sell us more software to provide this convenience, usually irelated to single sign-on, LDAP, etc. The lowest pricing tier for such software usually would cover many times the number of SAP users we have to serve here - and it feels like trying to push in a tack using a sledgehammer. It is true that we have not used the same userID for our PCs that we have defined in SAP, so there would need to be some way to translate from one to the other, but our PC password rules are consistent with those we have configured in SAP clients, so it seems to me it should be very simple. Can anyone lead me to a more straightforward solution? If not, can you articulate why this has to be so complicated using SAP software when it seems so simple using relatively inexpensive timekeeping sotware?>
Gagan Deep Kaushal wrote:
> Hi Tim,
>
> Its nice to see video.
>
> Is that mean using different username on OS and SAP level still we can achieve SSO.
>
> Correct if if am wrong.
> The only thing we need to maintain SNC name.
Once installed, yes. This is all you need to maintain when users are added. You can even use LDAP if you like to sync all user info between SAP and MS AD domain, but this cannot sync the password, so using SNC authentication instead of using SAP passwords is ideal.
>
> So for user test1 i can manage name as p:test2..... ??
Yes, that is correct. The mapping is maintained using standard SAP user management, such as su01. The user in AD domain might have long account name, e.g. "firstname.verylonglastname" which is too big for use as a SAP username so you can map this long AD account name onto a SAP user called FIRSTLAST in one or more SAP clients.
>
> I think that is what Ronald is also looking, user name need not to be same.
>
> Regards,
> Gagan Deep Kaushal -
Client tools not authenticating via Windows AD after upgrade to SP4
We recently upgraded our test environment to SP4 to correct a problem we were having with Windows AD authentication from InfoView. The upgrade to SP4 and JDK 1.5 solved our InfoView problem, but our client tools (Designer, Desk, Crystal Reports) can no longer login to our test environment using Windows AD authentication.
The error message we get when trying to connect to the SP4 instance using Designer or Deski is as follows:
[repo_proxy 13] SessionFacade::openSessionLogon with user info has failed(Internal error.(hr=#0x80042a01)
Enterprise authentication continues to work as normal. My first thought was that my client tools are at the SP2 level and they are trying to connect to an SP4 instance. Therefore, I need to upgrade the client tools to the SP4 level as well in order to get Windows AD authentication to work. Is this correct, and if so what is the proper way to upgrade the client tools to SP4?
On the SAP download site you can download the SP4 Full install, but when you run it says to uninstall the existing version first which I haven't tried yet. Does the SP4 full install give the option to do a client install versus a server install like previous SP2 install?While we always recommend matching versions I have rarely seen a problem with client tools and AD using different versions. I think you may have a different issue.
If your clients were installed from a deski/designer ONLY install then you can use a client version of SP4 that is much smaller. There should also be a server version that can be installed on top of deski/designer+ client tools (this should not require an uninstall). Finally there is an integrated build which includes the full XIR2 product with SP4 built in(it sounds like you downloaded this).
If SP4 does not resolve I'd suggest opening a message with support and packet scanning the client with netmon or wireshark.
What's the error you get with crystal using AD? There was a known issue on SP3 client patch that made all clients fail with AD/LDAP.
Regards,
Tim -
I have been experiencing several issues with my MacBook Pro Retina mid 2012. My MBPR is scheduled to go into the depot. However, I am wondering if anyone may be able to shed light on a few issues as this is the third "official" time my MBPR is going back for service ("one depot" trip; "one authorized" dealer; several in-store visits).
My Bluetooth is stating that the Bluetooth Chipset is Unknown (0). I also have had Bluetooth Preferences mysteriously change on me. In addition, while Bluetooth is off there are two serial modems turning on. I have turned them off, but they continue to pop up.
In addition, when I log in, my MBPR is not remembering me and my login name is not appearing on the slate-gray screen. The name and password are blank and the following message appears in the lower left hand corner. "login window authentication login window Name edit text has keyboard focus." As a side note, I am the only user. The login issue is a recent occurrence as we just totally wiped it again via a Command + R, and I don't believe I have an accessibility setting set to anything that would cause this, but wanted to check.
Should I be concerned here? Has anyone else had issues like this? I don't want to worry if I don't have to. I have had so many issues over the course of nine months. 5-6 wipes. Airport card replaced and I am about to pull my hair out if my MBPR doesn't come back worldly like clock work this time. I just can't send my days trying to get a $2300 product to work for me any longer. No idea what is wrong with it, but it is driving me insane. Cross your fingers for me and any guidance you have or thoughts would be welcomed. Thank you. EMMA few more issues...
In Console, the following is greyed out:
User and Diagnostic reports
Com.apple.launchd.peruser.0
Com.apple.launchd.peruser.88
Com.apple.launchd.peruser.89
Com.apple.launchd.peruser.92
Com.apple.launchd.peruser.97
Com.apple.launchd.peruser.200
Com.apple.launchd.peruser.201
Com.apple.launchd.peruser.202
Com.apple.launchd.peruser.212
*[user logs are accessible]
Krb5kdc
Radius
My guest files are locked, but again I am the administrator of MBPR.
I am worried about a keystroke logged or at least, trying to rule it out.
Also:
Mdworker32(225) [and other mdworker numbers] are sandboxing; stating deny Mach-lookup
Com.apple.Powermanagement.control, etc. long attachment with those files with version: ??? (???).
Postinstall: removing applications/Microsoft Office 2011/Microsoft Outlook.app
WARNINGS in Console include:
[NSImage compositeToPoint:fromRect:operation:fraction:] is deprecated in MacOSX 19.8 and later. Please use -[NSImage drawAtPoint:fromRect:operation:fraction] instead.
There are a ton of other warnings. Before I go through this again, can someone tell me if this is normal (all of it -- above too); or if these are symptoms is a keystroke logger or hardware issues?
I ask because originally, when my computer went in for diagnostics (more than once), Apple stated the hardware was fine (other than Airport Card -- finally). However, if I've done 5-6 total wipes; created new users; do not have sharing set-up; have not played around in Terminal; and am up-to-date with versions -- and various issues KEEP COMING BACK -- I am left wondering if a keystroke logger would be possible here?!? I thought maybe a faulty logic board, but why would diagnostics be okay, then? Not trying to be hyperbole, just desperate.
Please help me rule keystroke logger out or at least, tell me so I know, so I can take appropriate action. If you think it could be the logic board with symptoms above, that would be a great too.
All I want to do is use the computer as intended, but I can't seem to get a real answer, so after nine months -- I am turning to the communities to see if anyone -- anyone at all -- can help. The last thing I can do is have the MBPR come back from the depot and the same thing occur. Any guidance or advice would be so gratefully appreciated. -
Authentication via RADIUS : MSCHAPv2 Error 691
Hello All,
I am working on setting up authentication into an Acme Packet Net-Net 3820 (SBC) via RADIUS. The accounting side of things is working just fine with no issues. The authentication side of things is another matter. I can see from a packet capture that the access-request
messages are in fact getting to the RADIUS server at which point the RADIUS server starts communicating with the domain controllers. I then see the chain of communication going back to the RADIUS and then finally back to the SBC. The problem is the response
I get back is always an access-reject message with a reason code of 16 (Authentication failed due to a user credentials mismatch. Either the user name provided does not match an existing user account or the password was incorrect). This is confirmed by looking
at the security event logs where I can see events 4625 and 6273. See the events below (Note: The names and IPs have been changed to protect the innocent):
Event ID: 6273
Network Policy Server denied access to a user.
Contact the Network Policy Server administrator for more information.
User:
Security ID:
NULL SID
Account Name:
real_username
Account Domain:
real_domain
Fully Qualified Account Name:
real_domain\real_username
Client Machine:
Security ID:
NULL SID
Account Name:
Fully Qualified Account Name:
OS-Version:
Called Station Identifier:
Calling Station Identifier:
NAS:
NAS IPv4 Address:
10.0.0.10
NAS IPv6 Address:
NAS Identifier:
radius1.real_domain
NAS Port-Type:
NAS Port:
101451540
RADIUS Client:
Client Friendly Name:
sbc1mgmt
Client IP Address:
10.0.0.10
Authentication Details:
Connection Request Policy Name:
SBC Authentication
Network Policy Name:
Authentication Provider:
Windows
Authentication Server:
RADIUS1.real_domain
Authentication Type:
MS-CHAPv2
EAP Type:
Account Session Identifier:
Logging Results:
Accounting information was written to the SQL data store and the local log file.
Reason Code:
16
Reason:
Authentication failed due to a user credentials mismatch. Either the user name provided does not map to an existing user account or the password was incorrect.
Event ID: 4625
An account failed to log on.
Subject:
Security ID:
SYSTEM
Account Name:
RADIUS1$
Account Domain:
REAL_DOMAIN
Logon ID:
0x3E7
Logon Type: 3
Account For Which Logon Failed:
Security ID:
NULL SID
Account Name:
real_username
Account Domain:
REAL_DOMAIN
Failure Information:
Failure Reason:
Unknown user name or bad password.
Status:
0xC000006D
Sub Status:
0xC000006A
Process Information:
Caller Process ID:
0x2cc
Caller Process Name:
C:\Windows\System32\svchost.exe
Network Information:
Workstation Name:
Source Network Address:
Source Port:
Detailed Authentication Information:
Logon Process:
IAS
Authentication Package:
MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
Transited Services:
Package Name (NTLM only):
Key Length:
0
This event is generated when a logon request fails. It is generated on the computer where access was attempted.
The Subject fields indicate the account on the local system which requested the logon. This is most commonly a service such as the Server service, or a local process such as Winlogon.exe or Services.exe.
The Logon Type field indicates the kind of logon that was requested. The most common types are 2 (interactive) and 3 (network).
The Process Information fields indicate which account and process on the system requested the logon.
The Network Information fields indicate where a remote logon request originated. Workstation name is not always available and may be left blank in some cases.
The authentication information fields provide detailed information about this specific logon request.
- Transited services indicate which intermediate services have participated in this logon request.
- Package name indicates which sub-protocol was used among the NTLM protocols.
- Key length indicates the length of the generated session key. This will be 0 if no session key was requested.
So at first glance it would seem that the issue is merely a case of an invalid username or mismatched password. This is further confirmed in the packet capture where I can see the MSCHAPv2 response has an error code of 691 (Access denied because username or
password, or both, are not valid on the domain). The thing is I know I am using a valid username and I have tried many usernames including new ones I created just for troubleshooting. I don't know how many times I have reset the password in an attempt to ensure
it is not a mismatch password. I have even made sure to use passwords that are fairly short and contain only letters to ensure there was no terminal encoding issues (we connect to the SBC via SSH clients). I have also done this same thing with the shared secret
used during communication between the SBC and the RADIUS server. I have tried prefixing the username with the domain name at login (though I don't think that should be necessary). I have also tried using the full UPN of the user to login. I have tried several
RADIUS testing clients (NTRadPing, RadiusTest, etc.), but they either don't support MSCHAPv2 or only support EAP-MSCHAPv2. I have even created my own client using PHP's PECL RADIUS module. Still it always seems to fail with the MSCHAPv2 authentication with
an error code of 691. Does anyone have any ideas as to why I always get an invalid username or bad password response when I have done everything possible to ensure that is not the case?
Here are the specs for our RADIUS configuration:
Windows Server 2012 R2
SQL Server 2012 Back End Database for accounting.
The server has been authorized on the domain and is a member of the "RAS and IAS Servers" group. For which that group does have access to the accounts we are testing with.
The accounts we are testing with do have the "Control access through NPS Network Policy" option checked under their "Dial-in" property tab.
RADIUS clients configured to simply match on the IP address which you can see from the events above that it is applying the client friendly name.
Connection Request Policy: The "SBC Authenication" policy is being applied as seen above. The only condition is a regex expression that does successfully match the friendly name.
Network Policy: As seen in events above, none are getting applied. For troubleshooting purposes I have created a Network Policy that is set to "1" for the processing order and its only condition is a Day and Time Restriction currently set to any
time, any day.
The authentication method is set to only MSCHAPv2 or MSCHAPv2 (User can change password after it has expired). I have tried adding this to just the Network Policy and I have also tried adding this to the Connection Request Policy and setting it to override
the authentication method of the Network Policy.
We do have other RADIUS servers in our domain that use PEAP to authenticate wireless clients and they all work fine. However, we need this to work with MSCHAPv2 only (No EAP).
All other configurations are set to the defaults.
The only other things of note to consider is the fact that in the events above you can see that the Security ID is "NULL SID". Now I know this is common especially among failed logons but given that this issue is stating an invalid username or
bad password, perhaps it matters in this case. Also, this server has been rebuilt using the same computer account in Active Directory. I do not know if it would have worked before the rebuild. Essentially we built this server and only got as far as authorizing
the server to the domain and adding SQL when we decided to separate out the SQL role onto another server. Rather than uninstalling SQL we just rebuilt the machine. However, before reinstalling Windows I did do a reset on the computer account. I don't think
this should matter but thought I would point it out if there is some weird quirk where reusing the same SID of a previously authorized NPS server would cause an issue.
All in all it is a fairly basic setup and hopefully I have provided enough information for someone to get an idea of what might be going on. I hope this was the right forum to post this too, I figured there would be a higher number of RADIUS experts here than
any of the other categories. Apologies if my understanding of this seems a bit basic, after all, when it comes to RADIUS servers I guess you could say I'm the new guy here.Update 1:
In an attempt to further troubleshoot this issue I have tried bringing up additional servers for testing. Here are the additional tests I have performed.
Multiple Domains
I have now tried this in 3 different isolated domains. Both our test and production domains as well as my private home domain which has very little in the way of customizations aside from the modifications made for Exchange and ConfigMgr. All have the same
results described above.
VPN Service
Using Windows Server 2012 R2 we brought up a separate server to run a standard VPN setup. The intent was to see if we could use RADIUS authentication with the VPN and if that worked we would know the issue is with the SBCs. However, before we could even
configure it to use RADIUS we just attempted to make sure it worked with standard Windows Authentication on the local VPN server. Interestingly, it too fails with the same events getting logged as the RADIUS servers. The client machine being a Windows 8.1
workstation. Again I point out that we have working RADIUS servers used specifically for our wireless environment. The only difference between those RADIUS servers and the ones I am having problems with is that the working wireless servers are using PEAP instead
of MSCHAPv2.
FreeRADIUS
Now I'm no Linux guru but I believe I have it up and running. I am able to use ntlm_auth to authenticate users when logged on to the console. However, when the radiusd service tries to use ntlm_auth to do essentially the same thing it fails and returns the
same message I've been getting with the Windows server (E=691). I have the radiusd service running in debug mode so I can see more of what is going on. I can post the debug info I am getting if requested. The lines I am seeing of particular interest however
are as follows:
(1) ERROR: mschap : Program returned code (1) and output 'Logon failure (0xc000006d)'
(1) mschap : External script failed.
(1) ERROR: mschap : External script says: Logon Failure (0xc000006d)
(1) ERROR: mschap : MS-CHAP2-Response is incorrect
The thing to note here is that while we are essentially still getting a "wrong password" message, the actual status code (0xc000006d) is slightly different than what I was getting on the Windows Servers which was (0xc000006a). From this document
you can see what these codes mean:
NTSTATUS values . The good thing about this FreeRADIUS server is that I can see all of the challenge responses when it is in debug mode. So if I can wrap my head around how a MSCHAPv2 response is computed I can compare it to see if this is simply a miscomputed
challenge response. Update: Was just noticing that the 6a code is just the sub-status code for the 6d code. So nothing different from the Windows Servers, I still wonder if there is a computation error with the challenge responses though.
Currently, I am working on bringing up a Windows Server 2008 R2 instance of a RADIUS server to see if that helps at all. However, I would be surprised if something with the service broke between W2K8 R2 and W2K12 R2 without anyone noticing until now. If this
doesn't work I may have to open a case with Microsoft. Update: Same results with W2K8 R2. -
Sshd authentication via pam_userdb
Hello
I would like to configure ssh to authenticate against a database file which I've created.
This is what I have done so far:
1. Generate the database file out of a text file:
db_load -T -t hash -f logins.txt /etc/vpasswd.db
I have modified /etc/pam.d/sshd to be the below:
%PAM-1.0
auth requisite pam_securetty.so #Disable remote root
auth sufficient pam_unix.so
auth sufficient pam_userdb.so db=/etc/vpasswd crypt=hash use_first_pass
auth required pam_nologin.so
auth required pam_env.so
account sufficient pam_unix.so
account sufficient pam_userdb.so db=/etc/vpasswd crypt=hash use_first_pass
account required pam_time.so
password required pam_unix.so
session required pam_unix_session.so
session required pam_limits.so
When I log is as a user specified in the database file the following logs are returned:
Apr 1 00:29:47 dopey sshd[13778]: Failed none for invalid user testuser from 57.62.62.102 port 31794 ssh2
Apr 1 00:29:52 dopey sshd[13778]: Failed password for invalid user testuser from 57.62.62.102 port 31794 ssh2
Apr 1 00:29:55 dopey sshd[13778]: Failed password for invalid user testuser from 57.62.62.102 port 31794 ssh2
What I'd like to happen is if the user exists as a Linux account then let them in as normal, but if not then check the vpasswd.db database file.
Can anyone point me in the right direction? Is it possible to configure this?
Thanks
- eskay
Last edited by eskay (2009-04-01 03:18:55)It looks like RADIUS authentication via the PAM module does work. We compiled the pam_radius module using the -bundle option to the linker. That seems to have fixed it. The link line ends up being
gcc -bundle pamradiusauth.o md5.o -lpam -o pamradiusauth.so
We'll send these simple changes to the pam radius developers.
What this has allowed us to do is use RADIUS authentication for logging in remotely via ssh. However, we have yet to figure out how to get the main login "window" for OS X to allow PAM to be used.
Pete -
ACS configuration for NAC authentication
Hello,
I've been trying to configure my ACS server to allow user authentication via the cisco NAM, but it does not seem to work anytime i try to log in with my configured username/password on the ACS server.
I need someone to guide me through how to get this resolved.
Regards,I am assuming you are having the NAM authenticate NAC Agent login requests against ACS.
This can be done via RADIUS or LDAP.
Check out the Cisco NAC Chalk Talks, particularly 'Configuring Authentication, Roles, and SSO'
Chalk Talk Series
http://www.cisco.com/en/US/prod/collateral/vpndevc/ps5707/ps8418/ps6128/prod_presentation0900aecd80549168.html -
How Can I Receive (Non BT) Email Via 'Windows Live...
We've recently got BT Infinity, and I want to send and receive Emails from various Email providers via Windows Live Mail. Before, all I had to do was go into Windows Live Mail and set the incoming servers to whatever the Email providers was, and the outgoing servers as "relay.plus.net" and everything just worked. I've tried setting the outgoing servers to "mail.btinternet.com", but I still cannot send anything.
The instructions I've found so far, are for logging into BT Yahoo Mail and 'verifying' Email addresses. But we don't have BT Yahoo, the only BT Email we can access is BT Mail via the BT website. This has a different interface.
Could someone give me a step by step guide how to do this and tell me exactly what I'm meant to be putting in my Windows Live Mail account settings?
An example of the error message I get is as below
The message could not be sent because the server rejected the sender's e-mail address. The sender's e-mail address was '[email protected]'.
Subject 'TEST'
Server Error: 530
Server Response: 530 authentication required - Your email could not be sent. To fix this you must make a simple change to your email client (known as SMTP authentication). For advice visit http://www.bt.com/smtp
Server: 'mail.btinternet.com'
Windows Live Mail Error ID: 0x800CCC78
Protocol: SMTP
Port: 25
Secure(SSL): NoCheck you have the correct settings as per this link
http://bt.custhelp.com/app/answers/detail/a_id/44917/kw/bt%20mail/c/346,6588,6591 -
How do I STOP receiving Email notifications on my iPhone, notifying me about every time I login regularly, to iCloud etc via windows computers? Ta.
go>setting>notifications>mail>turn allow notifications off
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I am having problems importing to my Ipod nano via windows 8. I usually do this from a windows 7 computer and have had no problems; hoever in windows 8 I can only see items purchased in the Itunes store. I do not have access to my entire library, which includes song uploaded from CDs and some videos. As a result, I'm having problems uploading any new items from CDs or DVDs. The computer with windows 8 is an authorized computer, so I don't understand why I'm having the problem.
Hello APVzW, we absolutely want the best path to resolution. My apologies for multiple attempts of replacing the device. We'd like to verify the order information and see if we can locate the tracking number. Please send a direct message with the order number so we can dive deeper. Here's steps to send a direct message: http://vz.to/1b8XnPy We look forward to hearing from you soon.
WiltonA_VZW
VZW Support
Follow us on twitter @VZWSupport -
Can't access photos via windows, everything else works iTunes, external software etc.
Hello,
Since I installed Windows 8.1 I have quite big problem, can't access photos via windows explorer. iTunes and other software can see phone and works completely fine.
There is error 28 in device manager.
Tried uninstalling all services including iTunes itself and got latest iTunes today and still no luck.
Anybody knows solution to this ?
(iPhone 4S iOS 7.0.4)Is it just me, who got this issue ?
-
I recently bought an Ipod touch 2nd gen, (Ebay). It's in great shape and seemed to be wiped clean.
When I connect (via windows computer) to Itunes with usb cord the Ipod icon shows, but the only function you can do is eject. When its in the upper right hand corner and you click on it all you get is a done button, when it's in the side bar right click and your only option is eject, left click has no effect. If I go to "file">devices it's as if there are no devices connected.
I purchased a song with Itunes on the Ipod itself, and it transferred to my library on the computer automatically .
I have an Iphone 5 and a nano that are still functioning with Itunes thru computer so I'm thinking the issue is with the Ipod touch. I've reset it several times, rebooted it, with no change.
nothing on the internet has helped, I called tech support and got disconnected. Should I take it to a retail store? I just don't know where to go next, I'm of course willing to pay for tech or repair. looking for suggestions.Try:
- iOS: Not responding or does not turn on
- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
- Try on another computer
- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar -
My iPhone 5 is no longer visible to my PC via Windows Explorer
My iPhone 5 (running iOS 8.02) is no longer visible to my PC (running Windows 7) via Windows Explorer. In the past, I have been able to see the phone listed as a Device in Windows Explorer when connected via USB cable, and could navigate to the DCIM folder to see and copy photos just like any other hard driver.
Since installing iOS 8.02, the phone no longer appears in Windows Explorer.
If this is no longer possible, how can I transfer photos from iPhone to PC? I have tried clicking around in iTunes, but can't find any relevant functionality there, either - am I missing something?You're welcome. There are many blurred lines with respect to iOS 8 photo management -- i.e. is the photo actually on the device, or only in iCloud? If it is in iCloud only, and you put it into an album on the iPhone, does it get downloaded to the device and is it still full resolution?
Part of the problem may be that there are still some unfinished things with respect to photos. The "iCloud Photo Library" feature seen in pre-iOS 8 release is still in beta form, so whenever that gets full release there could be some sense in all this. There's also the pending replacement of iPhoto and Aperture on the Mac platform, slated to be replaced by a new "Photo" app, so that may play into the big picture on photo management.
But for the time being, I don't feel that the changes to photo management in iOS 8/ iCloud have been for the better. I can only hope that we get a more elegant photo management process with these pending changes. -
SChannel Fails Authentication on Windows Server 2008 R2 Using TLS1
I am trying to use SChannel to secure a socket connection. I modified the example at
https://msdn.microsoft.com/en-us/library/windows/desktop/aa380537(v=vs.85).aspx, converting it from Negotiate to SChannel. Following the specs for the SSPI APIs I was able the get a Client & Server connection authenticated on Windows 7.
However, when I try running the same programs on Windows Server 2008 R2, either the Client side or Server side fails, depending on how I select the security protocol.
Here is the modified example code, details about my results follow the code.
Client.cpp
// Client-side program to establish an SSPI socket connection
// with a server and exchange messages.
// Define macros and constants.
#include "StdAfx.h"
#include <windows.h>
#include <winsock.h>
#include <stdio.h>
#include <stdlib.h>
#include "SspiExample.h"
#include <string>
#include <iostream>
CredHandle g_hCred;
SecHandle g_hCtext;
#define SSPI_CLIENT "SChannelClient:" __FUNCTION__
void main(int argc, char * argv[])
SOCKET Client_Socket;
BYTE Data[BIG_BUFF];
PCHAR pMessage;
WSADATA wsaData;
SECURITY_STATUS ss;
DWORD cbRead;
ULONG cbHeader;
ULONG cbMaxMessage;
ULONG cbTrailer;
SecPkgContext_StreamSizes SecPkgSizes;
SecPkgContext_PackageInfo SecPkgPkgInfo;
SecPkgContext_ConnectionInfo ConnectionInfo;
BOOL DoAuthentication (SOCKET s, WCHAR * pCertName);
char Server[512] = {0};
WCHAR CertName[512] = {0};
// Validate cmd line parameters
if ( argc != 3 )
LOGA ( ( __log_buf, SSPI_CLIENT " required parameters ServerName & CertName not entered.\n"));
LOGA( ( __log_buf, SSPI_CLIENT " Abort and start over with required parameters.\n") );
std::cin.get();
else
// argv[1] - ServerName - the name of the computer running the server sample.
// argv[2] - TargetName the common name of the certificate provided
// by the target server program.
memcpy(Server, argv[1], strlen(argv[1]));
size_t sizCN;
mbstowcs_s(&sizCN, CertName, strlen(argv[2])+1, argv[2], _TRUNCATE);
LOGA ( ( __log_buf, SSPI_CLIENT " input parameters - ServerName %s CertName %ls.\n", Server, CertName ));
// Initialize the socket and the SSP security package.
if(WSAStartup (0x0101, &wsaData))
MyHandleError( __FUNCTION__ " Could not initialize winsock ");
// Connect to a server.
SecInvalidateHandle( &g_hCtext );
if (!ConnectAuthSocket (
&Client_Socket,
&g_hCred,
&g_hCtext,
Server,
CertName))
MyHandleError( __FUNCTION__ " Authenticated server connection ");
LOGA ( ( __log_buf, SSPI_CLIENT " connection authenticated.\n"));
// An authenticated session with a server has been established.
// Receive and manage a message from the server.
// First, find and display the name of the SSP,
// the transport protocol supported by the SSP,
// and the size of the header, maximum message, and
// trailer blocks for this SSP.
ss = QueryContextAttributes(
&g_hCtext,
SECPKG_ATTR_PACKAGE_INFO,
&SecPkgPkgInfo );
if (!SEC_SUCCESS(ss))
LOGA ( ( __log_buf, SSPI_CLIENT "QueryContextAttributes failed: 0x%08x\n", ss));
MyHandleError( __FUNCTION__ " QueryContextAttributes failed.\n");
else
LOGA ( ( __log_buf, SSPI_CLIENT " Package Name: %ls\n", SecPkgPkgInfo.PackageInfo->Name));
// Free the allocated buffer.
FreeContextBuffer(SecPkgPkgInfo.PackageInfo);
ss = QueryContextAttributes(
&g_hCtext,
SECPKG_ATTR_STREAM_SIZES,
&SecPkgSizes );
if (!SEC_SUCCESS(ss))
LOGA ( ( __log_buf, SSPI_CLIENT " QueryContextAttributes failed: 0x%08x\n", ss));
MyHandleError( __FUNCTION__ " Query context ");
cbHeader = SecPkgSizes.cbHeader;
cbMaxMessage = SecPkgSizes.cbMaximumMessage;
cbTrailer = SecPkgSizes.cbTrailer;
LOGA ( ( __log_buf, SSPI_CLIENT " cbHeader %u, cbMaxMessage %u, cbTrailer %u\n", cbHeader, cbMaxMessage, cbTrailer ));
ss = QueryContextAttributes(
&g_hCtext,
SECPKG_ATTR_CONNECTION_INFO,
&ConnectionInfo );
if (!SEC_SUCCESS(ss))
LOGA ( ( __log_buf, SSPI_CLIENT " QueryContextAttributes failed: 0x%08x\n", ss));
MyHandleError( __FUNCTION__ " Query context ");
switch(ConnectionInfo.dwProtocol)
case SP_PROT_TLS1_CLIENT:
LOGA ( ( __log_buf, SSPI_CLIENT " Protocol: TLS1\n"));
break;
case SP_PROT_SSL3_CLIENT:
LOGA ( ( __log_buf, SSPI_CLIENT " Protocol: SSL3\n"));
break;
case SP_PROT_PCT1_CLIENT:
LOGA ( ( __log_buf, SSPI_CLIENT " Protocol: PCT\n"));
break;
case SP_PROT_SSL2_CLIENT:
LOGA ( ( __log_buf, SSPI_CLIENT " Protocol: SSL2\n"));
break;
default:
LOGA ( ( __log_buf, SSPI_CLIENT " Unknown Protocol: 0x%x\n", ConnectionInfo.dwProtocol));
switch(ConnectionInfo.aiCipher)
case CALG_RC4:
LOGA ( ( __log_buf, SSPI_CLIENT " Cipher: RC4\n");)
break;
case CALG_3DES:
LOGA ( ( __log_buf, SSPI_CLIENT " Cipher: Triple DES\n"));
break;
case CALG_RC2:
LOGA ( ( __log_buf, SSPI_CLIENT " Cipher: RC2\n"));
break;
case CALG_DES:
case CALG_CYLINK_MEK:
LOGA ( ( __log_buf, SSPI_CLIENT " Cipher: DES\n"));
break;
case CALG_SKIPJACK:
LOGA ( ( __log_buf, SSPI_CLIENT " Cipher: Skipjack\n"));
break;
case CALG_AES_256:
LOGA ( ( __log_buf, SSPI_CLIENT " Cipher: AES 256\n"));
break;
default:
LOGA ( ( __log_buf, SSPI_CLIENT " Unknown Cipher: 0x%x\n", ConnectionInfo.aiCipher));
LOGA ( ( __log_buf, SSPI_CLIENT " Cipher strength: %d\n", ConnectionInfo.dwCipherStrength));
switch(ConnectionInfo.aiHash)
case CALG_MD5:
LOGA ( ( __log_buf, SSPI_CLIENT " Hash: MD5\n"));
break;
case CALG_SHA:
LOGA ( ( __log_buf, SSPI_CLIENT " Hash: SHA\n"));
break;
default:
LOGA ( ( __log_buf, SSPI_CLIENT " Unknown Hash: 0x%x\n", ConnectionInfo.aiHash));
LOGA ( ( __log_buf, SSPI_CLIENT " Hash strength: %d\n", ConnectionInfo.dwHashStrength));
switch(ConnectionInfo.aiExch)
case CALG_RSA_KEYX:
case CALG_RSA_SIGN:
LOGA ( ( __log_buf, SSPI_CLIENT " Key exchange: RSA\n"));
break;
case CALG_KEA_KEYX:
LOGA ( ( __log_buf, SSPI_CLIENT " Key exchange: KEA\n"));
break;
case CALG_DH_EPHEM:
LOGA ( ( __log_buf, SSPI_CLIENT " Key exchange: DH Ephemeral\n"));
break;
default:
LOGA ( ( __log_buf, SSPI_CLIENT " Unknown Key exchange: 0x%x\n", ConnectionInfo.aiExch));
LOGA ( ( __log_buf, SSPI_CLIENT " Key exchange strength: %d\n", ConnectionInfo.dwExchStrength));
// Decrypt and display the message from the server.
if (!ReceiveBytes(
Client_Socket,
Data,
BIG_BUFF,
&cbRead))
MyHandleError( __FUNCTION__ " No response from server\n");
if (0 == cbRead)
MyHandleError(__FUNCTION__ " Zero bytes received.\n");
pMessage = (PCHAR) DecryptThis(
Data,
&cbRead,
&g_hCtext);
// Skip the header to get the decrypted message
pMessage += cbHeader;
ULONG cbMessage = cbRead-cbHeader-cbTrailer;
if ((cbMessage == strlen(TEST_MSG)) &&
!strncmp(pMessage, TEST_MSG, strlen(TEST_MSG)) )
LOGA ( ( __log_buf, SSPI_CLIENT " SUCCESS!! The message from the server is \n -> %.*s \n",
cbMessage, pMessage ))
else
LOGA ( ( __log_buf, SSPI_CLIENT " UNEXPECTED message from the server: \n -> %.*s \n",
cbMessage, pMessage ));
LOGA ( ( __log_buf, SSPI_CLIENT " rcvd msg size %u, exp size %u\n", cbMessage, strlen(TEST_MSG) ));
// Terminate socket and security package.
DeleteSecurityContext (&g_hCtext);
FreeCredentialHandle (&g_hCred);
shutdown (Client_Socket, 2);
closesocket (Client_Socket);
if (SOCKET_ERROR == WSACleanup ())
MyHandleError( __FUNCTION__ " Problem with socket cleanup ");
exit (EXIT_SUCCESS);
} // end main
// ConnectAuthSocket establishes an authenticated socket connection
// with a server and initializes needed security package resources.
BOOL ConnectAuthSocket (
SOCKET *s,
CredHandle *g_hCred,
PSecHandle phCtext,
char * pServer,
WCHAR * pCertName)
unsigned long ulAddress;
struct hostent *pHost;
SOCKADDR_IN sin;
// Lookup the server's address.
LOGA ( ( __log_buf, SSPI_CLIENT " entry.\n"));
ulAddress = inet_addr (pServer);
if (INADDR_NONE == ulAddress)
LOGA ( ( __log_buf, SSPI_CLIENT " calling gethostbyname with %s.\n", pServer ));
pHost = gethostbyname (pServer);
if (NULL == pHost)
MyHandleError(__FUNCTION__ " Unable to resolve host name ");
memcpy((char FAR *)&ulAddress, pHost->h_addr, pHost->h_length);
std::string ipAddrStr;
ipAddrStr = inet_ntoa( *(struct in_addr*)*pHost->h_addr_list);
LOGA ( ( __log_buf, __FUNCTION__ " gethostbyname - ipAddress %s, name %s.\n", ipAddrStr.c_str(), pHost->h_name ) );
// Create the socket.
*s = socket (
PF_INET,
SOCK_STREAM,
0);
if (INVALID_SOCKET == *s)
MyHandleError(__FUNCTION__ " Unable to create socket");
else
LOGA ( ( __log_buf, SSPI_CLIENT " Socket created.\n"));
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = ulAddress;
sin.sin_port = htons (g_usPort);
// Connect to the server.
if (connect (*s, (LPSOCKADDR) &sin, sizeof (sin)))
closesocket (*s);
MyHandleError( __FUNCTION__ " Connect failed ");
LOGA ( ( __log_buf, SSPI_CLIENT " Connection established.\n"));
// Authenticate the connection.
if (!DoAuthentication (*s, pCertName))
closesocket (*s);
MyHandleError( __FUNCTION__ " Authentication ");
LOGA ( ( __log_buf, SSPI_CLIENT " success.\n"));
return(TRUE);
} // end ConnectAuthSocket
BOOL DoAuthentication (SOCKET s, WCHAR * pCertName)
BOOL fDone = FALSE;
DWORD cbOut = 0;
DWORD cbIn = 0;
PBYTE pInBuf;
PBYTE pOutBuf;
if(!(pInBuf = (PBYTE) malloc(MAXMESSAGE)))
MyHandleError( __FUNCTION__ " Memory allocation ");
if(!(pOutBuf = (PBYTE) malloc(MAXMESSAGE)))
MyHandleError( __FUNCTION__ " Memory allocation ");
cbOut = MAXMESSAGE;
LOGA ( ( __log_buf, SSPI_CLIENT " 1st message.\n"));
if (!GenClientContext (
NULL,
0,
pOutBuf,
&cbOut,
&fDone,
pCertName,
&g_hCred,
&g_hCtext
LOGA ( ( __log_buf, SSPI_CLIENT " GenClientContext failed\n"));
return(FALSE);
if (!SendMsg (s, pOutBuf, cbOut ))
MyHandleError(__FUNCTION__ " Send message failed ");
while (!fDone)
if (!ReceiveMsg (
s,
pInBuf,
MAXMESSAGE,
&cbIn))
MyHandleError( __FUNCTION__ " Receive message failed ");
cbOut = MAXMESSAGE;
LOGA ( ( __log_buf, SSPI_CLIENT " Message loop.\n"));
if (!GenClientContext (
pInBuf,
cbIn,
pOutBuf,
&cbOut,
&fDone,
pCertName,
&g_hCred,
&g_hCtext))
MyHandleError( __FUNCTION__ " GenClientContext failed");
if (!SendMsg (
s,
pOutBuf,
cbOut))
MyHandleError( __FUNCTION__ " Send message failed");
LOGA ( ( __log_buf, SSPI_CLIENT " fDone %s.\n", fDone ? "Yes" : "No" ));
if (NULL != pInBuf)
free(pInBuf);
pInBuf = NULL;
if (NULL != pOutBuf)
free(pOutBuf);
pOutBuf = NULL;
LOGA ( ( __log_buf, SSPI_CLIENT " exit.\n"));
return(TRUE);
BOOL GenClientContext (
BYTE *pIn,
DWORD cbIn,
BYTE *pOut,
DWORD *pcbOut,
BOOL *pfDone,
WCHAR *pCertName,
CredHandle *g_hCred,
struct _SecHandle *g_hCtext)
SECURITY_STATUS ss;
TimeStamp Lifetime;
SecBufferDesc OutBuffDesc;
SecBuffer OutSecBuff;
SecBufferDesc InBuffDesc;
SecBuffer InSecBuff[2];
ULONG ContextAttributes;
static TCHAR lpPackageName[1024];
if( NULL == pIn )
wcscpy_s(lpPackageName, 1024 * sizeof(TCHAR), UNISP_NAME );
ss = AcquireCredentialsHandle (
NULL,
lpPackageName,
SECPKG_CRED_OUTBOUND,
NULL,
NULL,
NULL,
NULL,
g_hCred,
&Lifetime);
if (!(SEC_SUCCESS (ss)))
MyHandleError( __FUNCTION__ " AcquireCreds failed ");
// Prepare the buffers.
OutBuffDesc.ulVersion = 0;
OutBuffDesc.cBuffers = 1;
OutBuffDesc.pBuffers = &OutSecBuff;
OutSecBuff.cbBuffer = *pcbOut;
OutSecBuff.BufferType = SECBUFFER_TOKEN;
OutSecBuff.pvBuffer = pOut;
// The input buffer is created only if a message has been received
// from the server.
if (pIn)
LOGA ( ( __log_buf, SSPI_CLIENT " Call InitializeSecurityContext with pIn supplied.\n"));
InBuffDesc.ulVersion = 0;
InBuffDesc.cBuffers = 1;
InBuffDesc.pBuffers = InSecBuff;
InSecBuff[0].cbBuffer = cbIn;
InSecBuff[0].BufferType = SECBUFFER_TOKEN;
InSecBuff[0].pvBuffer = pIn;
InSecBuff[1].pvBuffer = NULL;
InSecBuff[1].cbBuffer = 0;
InSecBuff[1].BufferType = SECBUFFER_EMPTY;
ss = InitializeSecurityContext (
g_hCred,
g_hCtext,
pCertName,
MessageAttribute,
0,
0,
&InBuffDesc,
0,
g_hCtext,
&OutBuffDesc,
&ContextAttributes,
&Lifetime);
else
LOGA ( ( __log_buf, SSPI_CLIENT " Call InitializeSecurityContext with NULL pIn.\n"));
ss = InitializeSecurityContext (
g_hCred,
NULL,
pCertName,
MessageAttribute,
0,
0,
NULL,
0,
g_hCtext,
&OutBuffDesc,
&ContextAttributes,
&Lifetime);
if (!SEC_SUCCESS (ss))
LOGA ( ( __log_buf, SSPI_CLIENT " InitializeSecurityContext failed with error 0x%08x\n", ss));
MyHandleError ( __FUNCTION__ " InitializeSecurityContext failed " );
LOGA ( ( __log_buf, SSPI_CLIENT " InitializeSecurityContext returned 0x%08x\n", ss));
// If necessary, complete the token.
if ((SEC_I_COMPLETE_NEEDED == ss)
|| (SEC_I_COMPLETE_AND_CONTINUE == ss))
ss = CompleteAuthToken (g_hCtext, &OutBuffDesc);
if (!SEC_SUCCESS(ss))
LOGA ( ( __log_buf, SSPI_CLIENT " complete failed: 0x%08x\n", ss));
return FALSE;
*pcbOut = OutSecBuff.cbBuffer;
*pfDone = !((SEC_I_CONTINUE_NEEDED == ss) ||
(SEC_I_COMPLETE_AND_CONTINUE == ss));
LOGA ( ( __log_buf, SSPI_CLIENT " Token buffer generated (%lu bytes):\n", OutSecBuff.cbBuffer));
PrintHexDump (OutSecBuff.cbBuffer, (PBYTE)OutSecBuff.pvBuffer);
return TRUE;
PBYTE DecryptThis(
PBYTE pBuffer,
LPDWORD pcbMessage,
struct _SecHandle *hCtxt)
SECURITY_STATUS ss;
SecBufferDesc BuffDesc;
SecBuffer SecBuff[4];
ULONG ulQop = 0;
// By agreement, the server encrypted the message and set the size
// of the trailer block to be just what it needed. DecryptMessage
// needs the size of the trailer block.
// The size of the trailer is in the first DWORD of the
// message received.
LOGA ( ( __log_buf, SSPI_CLIENT " data before decryption including trailer (%lu bytes):\n",
*pcbMessage));
PrintHexDump (*pcbMessage, (PBYTE) pBuffer);
// Prepare the buffers to be passed to the DecryptMessage function.
BuffDesc.ulVersion = 0;
BuffDesc.cBuffers = 4;
BuffDesc.pBuffers = SecBuff;
SecBuff[0].cbBuffer = *pcbMessage;
SecBuff[0].BufferType = SECBUFFER_DATA;
SecBuff[0].pvBuffer = pBuffer;
SecBuff[1].cbBuffer = 0;
SecBuff[1].BufferType = SECBUFFER_EMPTY;
SecBuff[1].pvBuffer = NULL;
SecBuff[2].cbBuffer = 0;
SecBuff[2].BufferType = SECBUFFER_EMPTY;
SecBuff[2].pvBuffer = NULL;
SecBuff[3].cbBuffer = 0;
SecBuff[3].BufferType = SECBUFFER_EMPTY;
SecBuff[3].pvBuffer = NULL;
ss = DecryptMessage(
hCtxt,
&BuffDesc,
0,
&ulQop);
if (!SEC_SUCCESS(ss))
LOGA ( ( __log_buf, SSPI_CLIENT " DecryptMessage failed with error 0x%08x\n", ss))
else
LOGA ( ( __log_buf, SSPI_CLIENT " DecryptMessage success? Status: 0x%08x\n", ss));
// Return a pointer to the decrypted data. The trailer data
// is discarded.
return pBuffer;
PBYTE VerifyThis(
PBYTE pBuffer,
LPDWORD pcbMessage,
struct _SecHandle *hCtxt,
ULONG cbMaxSignature)
SECURITY_STATUS ss;
SecBufferDesc BuffDesc;
SecBuffer SecBuff[2];
ULONG ulQop = 0;
PBYTE pSigBuffer;
PBYTE pDataBuffer;
// The global cbMaxSignature is the size of the signature
// in the message received.
LOGA ( ( __log_buf, SSPI_CLIENT " data before verifying (including signature):\n"));
PrintHexDump (*pcbMessage, pBuffer);
// By agreement with the server,
// the signature is at the beginning of the message received,
// and the data that was signed comes after the signature.
pSigBuffer = pBuffer;
pDataBuffer = pBuffer + cbMaxSignature;
// The size of the message is reset to the size of the data only.
*pcbMessage = *pcbMessage - (cbMaxSignature);
// Prepare the buffers to be passed to the signature verification
// function.
BuffDesc.ulVersion = 0;
BuffDesc.cBuffers = 2;
BuffDesc.pBuffers = SecBuff;
SecBuff[0].cbBuffer = cbMaxSignature;
SecBuff[0].BufferType = SECBUFFER_TOKEN;
SecBuff[0].pvBuffer = pSigBuffer;
SecBuff[1].cbBuffer = *pcbMessage;
SecBuff[1].BufferType = SECBUFFER_DATA;
SecBuff[1].pvBuffer = pDataBuffer;
ss = VerifySignature(
hCtxt,
&BuffDesc,
0,
&ulQop
if (!SEC_SUCCESS(ss))
LOGA ( ( __log_buf, SSPI_CLIENT " VerifyMessage failed with error 0x%08x\n", ss));
else
LOGA ( ( __log_buf, SSPI_CLIENT " Message was properly signed.\n"));
return pDataBuffer;
} // end VerifyThis
void PrintHexDump(
DWORD length,
PBYTE buffer)
DWORD i,count,index;
CHAR rgbDigits[]="0123456789abcdef";
CHAR rgbLine[100];
char cbLine;
for(index = 0; length;
length -= count, buffer += count, index += count)
count = (length > 16) ? 16:length;
sprintf_s(rgbLine, 100, "%4.4x ",index);
cbLine = 6;
for(i=0;i<count;i++)
rgbLine[cbLine++] = rgbDigits[buffer[i] >> 4];
rgbLine[cbLine++] = rgbDigits[buffer[i] & 0x0f];
if(i == 7)
rgbLine[cbLine++] = ':';
else
rgbLine[cbLine++] = ' ';
for(; i < 16; i++)
rgbLine[cbLine++] = ' ';
rgbLine[cbLine++] = ' ';
rgbLine[cbLine++] = ' ';
rgbLine[cbLine++] = ' ';
for(i = 0; i < count; i++)
if(buffer[i] < 32 || buffer[i] > 126)
rgbLine[cbLine++] = '.';
else
rgbLine[cbLine++] = buffer[i];
rgbLine[cbLine++] = 0;
LOGA ( ( __log_buf, SSPI_CLIENT " %s\n", rgbLine));
BOOL SendMsg (
SOCKET s,
PBYTE pBuf,
DWORD cbBuf)
if (0 == cbBuf)
return(TRUE);
// Send the size of the message.
LOGA ( ( __log_buf, SSPI_CLIENT " %lu bytes\n", cbBuf ));
if (!SendBytes (s, (PBYTE)&cbBuf, sizeof (cbBuf)))
LOGA ( ( __log_buf, SSPI_CLIENT " size failed.\n" ) );
return(FALSE);
// Send the body of the message.
if (!SendBytes (
s,
pBuf,
cbBuf))
LOGA ( ( __log_buf, SSPI_CLIENT " body failed.\n" ) );
return(FALSE);
LOGA ( ( __log_buf, SSPI_CLIENT " success\n" ) );
return(TRUE);
BOOL ReceiveMsg (
SOCKET s,
PBYTE pBuf,
DWORD cbBuf,
DWORD *pcbRead)
DWORD cbRead;
DWORD cbData;
// Receive the number of bytes in the message.
LOGA ( ( __log_buf, SSPI_CLIENT " entry.\n" ));
if (!ReceiveBytes (
s,
(PBYTE)&cbData,
sizeof (cbData),
&cbRead))
return(FALSE);
if (sizeof (cbData) != cbRead)
LOGA ( ( __log_buf, SSPI_CLIENT " failed: size of cbData %lu, bytes %lu\n", sizeof (cbData), cbRead));
return(FALSE);
// Read the full message.
if (!ReceiveBytes (
s,
pBuf,
cbData,
&cbRead))
return(FALSE);
if (cbRead != cbData)
return(FALSE);
*pcbRead = cbRead;
return(TRUE);
} // end ReceiveMessage
BOOL SendBytes (
SOCKET s,
PBYTE pBuf,
DWORD cbBuf)
PBYTE pTemp = pBuf;
int cbSent;
int cbRemaining = cbBuf;
if (0 == cbBuf)
return(TRUE);
while (cbRemaining)
LOGA ( ( __log_buf, SSPI_CLIENT " %lu bytes.\n", cbRemaining ));
cbSent = send (
s,
(const char *)pTemp,
cbRemaining,
0);
if (SOCKET_ERROR == cbSent)
LOGA ( ( __log_buf, SSPI_CLIENT " send failed: 0x%08.8X\n", GetLastError ()));
return FALSE;
pTemp += cbSent;
cbRemaining -= cbSent;
LOGA ( ( __log_buf, SSPI_CLIENT " success\n" ) );
return TRUE;
BOOL ReceiveBytes (
SOCKET s,
PBYTE pBuf,
DWORD cbBuf,
DWORD *pcbRead)
PBYTE pTemp = pBuf;
int cbRead, cbRemaining = cbBuf;
LOGA ( ( __log_buf, SSPI_CLIENT " Entry: %lu bytes.\n", cbRemaining ));
while (cbRemaining)
cbRead = recv (
s,
(char *)pTemp,
cbRemaining,
0);
LOGA ( ( __log_buf, SSPI_CLIENT " %lu bytes remaining.\n", cbRemaining ));
if (0 == cbRead)
break;
if (SOCKET_ERROR == cbRead)
LOGA ( ( __log_buf, SSPI_CLIENT " recv failed: 0x%08.8X\n", GetLastError ()));
return FALSE;
cbRemaining -= cbRead;
pTemp += cbRead;
*pcbRead = cbBuf - cbRemaining;
LOGA ( ( __log_buf, SSPI_CLIENT " success.\n" ));
return TRUE;
} // end ReceiveBytes
void MyHandleError(char *s)
DWORD err = GetLastError();
if (err)
LOGA ( ( __log_buf, SSPI_CLIENT " %s error (0x%08.8X). Exiting.\n",s, err ))
else
LOGA ( ( __log_buf, SSPI_CLIENT " %s error (no error info). Exiting.\n",s ));
exit (EXIT_FAILURE);
Server.cpp
// This is a server-side SSPI Windows Sockets program.
#include "StdAfx.h"
#include <windows.h>
#include <winsock.h>
#include <stdio.h>
#include <stdlib.h>
#include "Sspiexample.h"
#include <iostream>
CredHandle g_hcred;
struct _SecHandle g_hctxt;
static PBYTE g_pInBuf = NULL;
static PBYTE g_pOutBuf = NULL;
static DWORD g_cbMaxMessage;
static TCHAR g_lpPackageName[1024];
BOOL AcceptAuthSocket (SOCKET *ServerSocket, std::string certThumb );
#define SSPI_SERVER "SChannelServer:" __FUNCTION__
void main (int argc, char * argv[])
CHAR pMessage[200];
DWORD cbMessage;
PBYTE pDataToClient = NULL;
DWORD cbDataToClient = 0;
PWCHAR pUserName = NULL;
DWORD cbUserName = 0;
SOCKET Server_Socket;
WSADATA wsaData;
SECURITY_STATUS ss;
PSecPkgInfo pkgInfo;
SecPkgContext_StreamSizes SecPkgSizes;
SecPkgContext_PackageInfo SecPkgPkgInfo;
ULONG cbMaxMessage;
ULONG cbHeader;
ULONG cbTrailer;
std::string certThumb;
// Create a certificate if no thumbprint is supplied. Otherwise, use the provided
// thumbprint to find the certificate.
if ( (argc > 1) && (strlen( argv[1]) > 0) )
certThumb.assign(argv[1]);
else
LOGA( ( __log_buf, SSPI_SERVER " : No certificate thumbprint supplied.\n") );
LOGA( ( __log_buf, SSPI_SERVER " : Press ENTER to create a certificate, or abort and start over with a thumbprint.\n") );
std::cin.get();
certThumb.clear();
Insert code to find or create X.509 certificate.
// Set the default package to SChannel.
wcscpy_s(g_lpPackageName, 1024 * sizeof(TCHAR), UNISP_NAME);
// Initialize the socket interface and the security package.
if( WSAStartup (0x0101, &wsaData))
LOGA ( ( __log_buf, SSPI_SERVER " Could not initialize winsock: \n") );
cleanup();
ss = QuerySecurityPackageInfo (
g_lpPackageName,
&pkgInfo);
if (!SEC_SUCCESS(ss))
LOGA ( ( __log_buf, SSPI_SERVER " Could not query package info for %s, error 0x%08x\n",
g_lpPackageName, ss) );
cleanup();
g_cbMaxMessage = pkgInfo->cbMaxToken;
FreeContextBuffer(pkgInfo);
g_pInBuf = (PBYTE) malloc (g_cbMaxMessage);
g_pOutBuf = (PBYTE) malloc (g_cbMaxMessage);
if (NULL == g_pInBuf || NULL == g_pOutBuf)
LOGA ( ( __log_buf, SSPI_SERVER " Memory allocation error.\n"));
cleanup();
// Start looping for clients.
while(TRUE)
LOGA ( ( __log_buf, SSPI_SERVER " Waiting for client to connect...\n"));
// Make an authenticated connection with client.
if (!AcceptAuthSocket (&Server_Socket, certThumb ))
LOGA ( ( __log_buf, SSPI_SERVER " Could not authenticate the socket.\n"));
cleanup();
ss = QueryContextAttributes(
&g_hctxt,
SECPKG_ATTR_STREAM_SIZES,
&SecPkgSizes );
if (!SEC_SUCCESS(ss))
LOGA ( ( __log_buf, SSPI_SERVER " failed: 0x%08x\n", ss));
exit(1);
// The following values are used for encryption and signing.
cbMaxMessage = SecPkgSizes.cbMaximumMessage;
cbHeader = SecPkgSizes.cbHeader;
cbTrailer = SecPkgSizes.cbTrailer;
LOGA ( ( __log_buf, SSPI_SERVER " cbHeader %u, cbMaxMessage %u, cbTrailer %u\n", cbHeader, cbMaxMessage, cbTrailer ));
ss = QueryContextAttributes(
&g_hctxt,
SECPKG_ATTR_PACKAGE_INFO,
&SecPkgPkgInfo );
if (!SEC_SUCCESS(ss))
LOGA ( ( __log_buf, SSPI_SERVER " failed: 0x%08x\n", ss));
exit(1);
else
LOGA ( ( __log_buf, SSPI_SERVER " Package Name: %ls\n", SecPkgPkgInfo.PackageInfo->Name));
// Free the allocated buffer.
FreeContextBuffer(SecPkgPkgInfo.PackageInfo);
// Send the client an encrypted message.
strcpy_s(pMessage, sizeof(pMessage),
TEST_MSG);
cbMessage = (DWORD)strlen(pMessage);
EncryptThis (
(PBYTE) pMessage,
cbMessage,
&pDataToClient,
&cbDataToClient,
cbHeader,
cbTrailer);
// Send the encrypted data to client.
if (!SendBytes(
Server_Socket,
pDataToClient,
cbDataToClient))
LOGA ( ( __log_buf, SSPI_SERVER " send message failed. \n"));
cleanup();
LOGA ( ( __log_buf, SSPI_SERVER " %d encrypted bytes sent. \n", cbDataToClient));
if (Server_Socket)
DeleteSecurityContext (&g_hctxt);
FreeCredentialHandle (&g_hcred);
shutdown (Server_Socket, 2) ;
closesocket (Server_Socket);
Server_Socket = 0;
if (pUserName)
free (pUserName);
pUserName = NULL;
cbUserName = 0;
if(pDataToClient)
free (pDataToClient);
pDataToClient = NULL;
cbDataToClient = 0;
} // end while loop
LOGA ( ( __log_buf, SSPI_SERVER " Server ran to completion without error.\n"));
cleanup();
} // end main
BOOL AcceptAuthSocket (SOCKET *ServerSocket, std::string certThumb )
SOCKET sockListen;
SOCKET sockClient;
SOCKADDR_IN sockIn;
// Create listening socket.
sockListen = socket (
PF_INET,
SOCK_STREAM,
0);
if (INVALID_SOCKET == sockListen)
LOGA ( ( __log_buf, SSPI_SERVER " Failed to create socket: %u\n", GetLastError ()));
return(FALSE);
// Bind to local port.
sockIn.sin_family = AF_INET;
sockIn.sin_addr.s_addr = 0;
sockIn.sin_port = htons(usPort);
if (SOCKET_ERROR == bind (
sockListen,
(LPSOCKADDR) &sockIn,
sizeof (sockIn)))
LOGA ( ( __log_buf, SSPI_SERVER " bind failed: %u\n", GetLastError ()));
return(FALSE);
// Listen for client.
if (SOCKET_ERROR == listen (sockListen, 1))
LOGA ( ( __log_buf, SSPI_SERVER " Listen failed: %u\n", GetLastError ()));
return(FALSE);
else
LOGA ( ( __log_buf, SSPI_SERVER " Listening ! \n"));
// Accept client.
sockClient = accept (
sockListen,
NULL,
NULL);
if (INVALID_SOCKET == sockClient)
LOGA ( ( __log_buf, SSPI_SERVER " accept failed: %u\n",GetLastError() ) );
return(FALSE);
closesocket (sockListen);
*ServerSocket = sockClient;
return(DoAuthentication (sockClient, certThumb ));
} // end AcceptAuthSocket
BOOL DoAuthentication (SOCKET AuthSocket, std::string certThumb )
SECURITY_STATUS ss;
DWORD cbIn, cbOut;
BOOL done = FALSE;
TimeStamp Lifetime;
BOOL fNewConversation;
fNewConversation = TRUE;
PCCERT_CONTEXT pCertCtxt;
Insert code to retrieve pCertCtxt
// Build SCHANNEL_CRED structure to hold CERT_CONTEXT for call to AcquireCredentialsHandle
SCHANNEL_CRED credSchannel = {0};
credSchannel.dwVersion = SCHANNEL_CRED_VERSION;
credSchannel.grbitEnabledProtocols = SP_PROT_SSL2_SERVER | SP_PROT_TLS1_SERVER;
credSchannel.cCreds = 1;
credSchannel.paCred = &pCertCtxt;
ss = AcquireCredentialsHandle (
NULL, //pszPrincipal
g_lpPackageName, //pszPackage
SECPKG_CRED_INBOUND, //fCredentialuse
NULL, //pvLogonID
&credSchannel, //pAuthData - need SCHANNEL_CRED structure that indicates the protocol to use and the settings for various customizable channel features.
NULL, //pGetKeyFn
NULL, //pvGetKeyArgument
&g_hcred, //phCredential
&Lifetime); //ptsExpiry
if (!SEC_SUCCESS (ss))
LOGA ( ( __log_buf, SSPI_SERVER " AcquireCreds failed: 0x%08x\n", ss));
return(FALSE);
while(!done)
if (!ReceiveMsg (
AuthSocket,
g_pInBuf,
g_cbMaxMessage,
&cbIn))
return(FALSE);
cbOut = g_cbMaxMessage;
if (!GenServerContext (
g_pInBuf,
cbIn,
g_pOutBuf,
&cbOut,
&done,
fNewConversation))
LOGA ( ( __log_buf, SSPI_SERVER " GenServerContext failed.\n"));
return(FALSE);
fNewConversation = FALSE;
if (!SendMsg (
AuthSocket,
g_pOutBuf,
cbOut))
LOGA ( ( __log_buf, SSPI_SERVER " Send message failed.\n"));
return(FALSE);
return(TRUE);
} // end DoAuthentication
BOOL GenServerContext (
BYTE *pIn,
DWORD cbIn,
BYTE *pOut,
DWORD *pcbOut,
BOOL *pfDone,
BOOL fNewConversation)
SECURITY_STATUS ss;
TimeStamp Lifetime;
SecBufferDesc OutBuffDesc;
SecBuffer OutSecBuff;
SecBufferDesc InBuffDesc;
SecBuffer InSecBuff;
ULONG Attribs = 0;
// Prepare output buffers.
OutBuffDesc.ulVersion = 0;
OutBuffDesc.cBuffers = 1;
OutBuffDesc.pBuffers = &OutSecBuff;
OutSecBuff.cbBuffer = *pcbOut;
OutSecBuff.BufferType = SECBUFFER_TOKEN;
OutSecBuff.pvBuffer = pOut;
// Prepare input buffers.
InBuffDesc.ulVersion = 0;
InBuffDesc.cBuffers = 1;
InBuffDesc.pBuffers = &InSecBuff;
InSecBuff.cbBuffer = cbIn;
InSecBuff.BufferType = SECBUFFER_TOKEN;
InSecBuff.pvBuffer = pIn;
LOGA ( ( __log_buf, SSPI_SERVER " Token buffer received (%lu bytes):\n", InSecBuff.cbBuffer));
PrintHexDump (InSecBuff.cbBuffer, (PBYTE)InSecBuff.pvBuffer);
ss = AcceptSecurityContext (
&g_hcred,
fNewConversation ? NULL : &g_hctxt,
&InBuffDesc,
Attribs,
SECURITY_NATIVE_DREP,
&g_hctxt,
&OutBuffDesc,
&Attribs,
&Lifetime);
if (!SEC_SUCCESS (ss))
LOGA ( ( __log_buf, SSPI_SERVER " AcceptSecurityContext failed: 0x%08x\n", ss));
OutputDebugStringA( "." );
return FALSE;
// Complete token if applicable.
if ((SEC_I_COMPLETE_NEEDED == ss)
|| (SEC_I_COMPLETE_AND_CONTINUE == ss))
ss = CompleteAuthToken (&g_hctxt, &OutBuffDesc);
if (!SEC_SUCCESS(ss))
LOGA ( ( __log_buf, SSPI_SERVER " complete failed: 0x%08x\n", ss));
OutputDebugStringA( "." );
return FALSE;
*pcbOut = OutSecBuff.cbBuffer;
// fNewConversation equals FALSE.
LOGA ( ( __log_buf, SSPI_SERVER " Token buffer generated (%lu bytes):\n",
OutSecBuff.cbBuffer));
PrintHexDump (
OutSecBuff.cbBuffer,
(PBYTE)OutSecBuff.pvBuffer);
*pfDone = !((SEC_I_CONTINUE_NEEDED == ss)
|| (SEC_I_COMPLETE_AND_CONTINUE == ss));
LOGA ( ( __log_buf, SSPI_SERVER " AcceptSecurityContext result = 0x%08x\n", ss));
return TRUE;
} // end GenServerContext
BOOL EncryptThis (
PBYTE pMessage,
ULONG cbMessage,
BYTE ** ppOutput,
ULONG * pcbOutput,
ULONG cbHeader,
ULONG cbTrailer)
SECURITY_STATUS ss;
SecBufferDesc BuffDesc;
SecBuffer SecBuff[4];
ULONG ulQop = 0;
// The size of the trailer (signature + padding) block is
// determined from the global cbSecurityTrailer.
LOGA ( ( __log_buf, SSPI_SERVER " Data before encryption: %s\n", pMessage));
LOGA ( ( __log_buf, SSPI_SERVER " Length of data before encryption: %d \n",cbMessage));
// Prepare buffers.
BuffDesc.ulVersion = 0;
BuffDesc.cBuffers = 4;
BuffDesc.pBuffers = SecBuff;
PBYTE pHeader;
pHeader = (PBYTE) malloc (cbHeader);
SecBuff[0].cbBuffer = cbHeader;
SecBuff[0].BufferType = SECBUFFER_STREAM_HEADER;
SecBuff[0].pvBuffer = pHeader;
SecBuff[1].cbBuffer = cbMessage;
SecBuff[1].BufferType = SECBUFFER_DATA;
SecBuff[1].pvBuffer = pMessage;
PBYTE pTrailer;
pTrailer = (PBYTE) malloc (cbTrailer);
SecBuff[2].cbBuffer = cbTrailer;
SecBuff[2].BufferType = SECBUFFER_STREAM_TRAILER;
SecBuff[2].pvBuffer = pTrailer;
SecBuff[3].cbBuffer = 0;
SecBuff[3].BufferType = SECBUFFER_EMPTY;
SecBuff[3].pvBuffer = NULL;
ss = EncryptMessage(
&g_hctxt,
ulQop,
&BuffDesc,
0);
if (!SEC_SUCCESS(ss))
LOGA ( ( __log_buf, SSPI_SERVER " EncryptMessage failed: 0x%08x\n", ss));
return(FALSE);
else
LOGA ( ( __log_buf, SSPI_SERVER " The message has been encrypted. \n"));
// Allocate a buffer to hold the encrypted data constructed from the 3 buffers.
*pcbOutput = cbHeader + cbMessage + cbTrailer;
* ppOutput = (PBYTE) malloc (*pcbOutput);
memset (*ppOutput, 0, *pcbOutput);
memcpy (*ppOutput, pHeader, cbHeader);
memcpy (*ppOutput + cbHeader, pMessage, cbMessage);
memcpy (*ppOutput + cbHeader + cbMessage, pTrailer, cbTrailer);
LOGA ( ( __log_buf, SSPI_SERVER " data after encryption including trailer (%lu bytes):\n",
*pcbOutput));
PrintHexDump (*pcbOutput, *ppOutput);
return TRUE;
} // end EncryptThis
void PrintHexDump(DWORD length, PBYTE buffer)
DWORD i,count,index;
CHAR rgbDigits[]="0123456789abcdef";
CHAR rgbLine[100];
char cbLine;
for(index = 0; length;
length -= count, buffer += count, index += count)
count = (length > 16) ? 16:length;
sprintf_s(rgbLine, 100, "%4.4x ",index);
cbLine = 6;
for(i=0;i<count;i++)
rgbLine[cbLine++] = rgbDigits[buffer[i] >> 4];
rgbLine[cbLine++] = rgbDigits[buffer[i] & 0x0f];
if(i == 7)
rgbLine[cbLine++] = ':';
else
rgbLine[cbLine++] = ' ';
for(; i < 16; i++)
rgbLine[cbLine++] = ' ';
rgbLine[cbLine++] = ' ';
rgbLine[cbLine++] = ' ';
rgbLine[cbLine++] = ' ';
for(i = 0; i < count; i++)
if(buffer[i] < 32 || buffer[i] > 126)
rgbLine[cbLine++] = '.';
else
rgbLine[cbLine++] = buffer[i];
rgbLine[cbLine++] = 0;
LOGA ( ( __log_buf, SSPI_SERVER " %s\n", rgbLine));
} // end PrintHexDump
BOOL SendMsg (
SOCKET s,
PBYTE pBuf,
DWORD cbBuf)
LOGA ( ( __log_buf, SSPI_SERVER " %lu bytes\n", cbBuf ));
if (0 == cbBuf)
return(TRUE);
// Send the size of the message.
if (!SendBytes (
s,
(PBYTE)&cbBuf,
sizeof (cbBuf)))
return(FALSE);
// Send the body of the message.
if (!SendBytes (
s,
pBuf,
cbBuf))
return(FALSE);
return(TRUE);
} // end SendMsg
BOOL ReceiveMsg (
SOCKET s,
PBYTE pBuf,
DWORD cbBuf,
DWORD *pcbRead)
DWORD cbRead;
DWORD cbData;
LOGA ( ( __log_buf, SSPI_SERVER " %lu bytes\n", cbBuf ));
// Retrieve the number of bytes in the message.
if (!ReceiveBytes (
s,
(PBYTE)&cbData,
sizeof (cbData),
&cbRead))
LOGA ( ( __log_buf, SSPI_SERVER " ReceiveBytes failed retrieving byte count.\n", cbBuf ));
return(FALSE);
if (sizeof (cbData) != cbRead)
LOGA ( ( __log_buf, SSPI_SERVER " Error: buffer size (%lu) differs from reported size (%lu)\n", sizeof(cbData), cbRead ));
return(FALSE);
// Read the full message.
if (!ReceiveBytes (
s,
pBuf,
cbData,
&cbRead))
LOGA ( ( __log_buf, SSPI_SERVER " ReceiveBytes failed.\n", cbBuf ));
return(FALSE);
if (cbRead != cbData)
LOGA ( ( __log_buf, SSPI_SERVER " Error: buffer bytes (%lu) differs from reported bytes (%lu)\n", cbData, cbRead ));
return(FALSE);
*pcbRead = cbRead;
return(TRUE);
} // end ReceiveMsg
BOOL SendBytes (
SOCKET s,
PBYTE pBuf,
DWORD cbBuf)
PBYTE pTemp = pBuf;
int cbSent, cbRemaining = cbBuf;
LOGA ( ( __log_buf, SSPI_SERVER " %lu bytes\n", cbBuf ));
if (0 == cbBuf)
return(TRUE);
while (cbRemaining)
cbSent = send (
s,
(const char *)pTemp,
cbRemaining,
0);
if (SOCKET_ERROR == cbSent)
LOGA ( ( __log_buf, SSPI_SERVER " send failed: %u\n", GetLastError ()));
return FALSE;
LOGA ( ( __log_buf, SSPI_SERVER " %lu bytes sent\n", cbSent ));
pTemp += cbSent;
cbRemaining -= cbSent;
return TRUE;
} // end SendBytes
BOOL ReceiveBytes (
SOCKET s,
PBYTE pBuf,
DWORD cbBuf,
DWORD *pcbRead)
PBYTE pTemp = pBuf;
int cbRead, cbRemaining = cbBuf;
LOGA ( ( __log_buf, SSPI_SERVER " %lu bytes\n", cbBuf ));
while (cbRemaining)
cbRead = recv (
s,
(char *)pTemp,
cbRemaining,
0);
if (0 == cbRead)
break;
if (SOCKET_ERROR == cbRead)
LOGA ( ( __log_buf, SSPI_SERVER " recv failed: %u\n", GetLastError () ) );
return FALSE;
cbRemaining -= cbRead;
pTemp += cbRead;
*pcbRead = cbBuf - cbRemaining;
return TRUE;
} // end ReceivesBytes
void cleanup()
if (g_pInBuf)
free (g_pInBuf);
g_pInBuf = NULL;
if (g_pOutBuf)
free (g_pOutBuf);
g_pOutBuf = NULL;
WSACleanup ();
exit(0);
SspiExample.h
// SspiExample.h
#include <schnlsp.h>
#include <sspi.h>
#include <windows.h>
#include <string>
BOOL SendMsg (SOCKET s, PBYTE pBuf, DWORD cbBuf);
BOOL ReceiveMsg (SOCKET s, PBYTE pBuf, DWORD cbBuf, DWORD *pcbRead);
BOOL SendBytes (SOCKET s, PBYTE pBuf, DWORD cbBuf);
BOOL ReceiveBytes (SOCKET s, PBYTE pBuf, DWORD cbBuf, DWORD *pcbRead);
void cleanup();
BOOL GenClientContext (
BYTE *pIn,
DWORD cbIn,
BYTE *pOut,
DWORD *pcbOut,
BOOL *pfDone,
WCHAR *pCertName,
CredHandle *hCred,
PSecHandle phCtext
BOOL GenServerContext (
BYTE *pIn,
DWORD cbIn,
BYTE *pOut,
DWORD *pcbOut,
BOOL *pfDone,
BOOL fNewCredential
BOOL EncryptThis (
PBYTE pMessage,
ULONG cbMessage,
BYTE ** ppOutput,
LPDWORD pcbOutput,
ULONG cbHeader,
ULONG cbTrailer
PBYTE DecryptThis(
PBYTE achData,
LPDWORD pcbMessage,
struct _SecHandle *hCtxt
BOOL
SignThis (
PBYTE pMessage,
ULONG cbMessage,
BYTE ** ppOutput,
LPDWORD pcbOutput
PBYTE VerifyThis(
PBYTE pBuffer,
LPDWORD pcbMessage,
struct _SecHandle *hCtxt,
ULONG cbMaxSignature
void PrintHexDump(DWORD length, PBYTE buffer);
BOOL ConnectAuthSocket (
SOCKET *s,
CredHandle *hCred,
PSecHandle phCtext,
char * pServer,
WCHAR * pCertName
BOOL CloseAuthSocket (SOCKET s);
BOOL DoAuthentication (SOCKET s, WCHAR * pCertName );
BOOL DoAuthentication (SOCKET s, std::string certThumb );
void MyHandleError(char *s);
#define DBG_SIZE 1024
int OutputDebug( char buff[DBG_SIZE] )
int retval;
char debugstring[DBG_SIZE+32];
retval = _snprintf_s( debugstring, DBG_SIZE+32, _TRUNCATE, " %s", buff );
OutputDebugStringA( debugstring );
return retval;
int DbgBufCopy( char *buff, const char *format, ...)
int iLen;
va_list args;
/// Call va_start to start the variable list
va_start(args, format);
/// Call _vsnprintf_s to copy debug information to the buffer
iLen = _vsnprintf_s(buff, DBG_SIZE, _TRUNCATE, format, args);
/// Call va_end to end the variable list
va_end(args);
return iLen;
#define LOGA(_format_and_args_)\
{ char __log_buf[DBG_SIZE];\
DbgBufCopy _format_and_args_;\
printf("%s", __log_buf );\
OutputDebug(__log_buf);\
#define TEST_MSG "This is your server speaking"
My initial attempt built an SCHANNEL_CRED structure following the documentation to set
grbitEnabledProtocols to 0, and let SChannel select the protocol. This worked on Windows 7, selecting TLS1. When I ran the same exe-s on 2008 R2, the Client program failed, with InitializeSecurityContext returning SEC_E_DECRYPT_FAILURE.
The failure occurred on the 2nd call, using phNewContext returned on the first call.
My next attempt set grbitEnabledProtocols to SP_PROT_TLS1_SERVER. This also worked on Win 7, but 2008R2 failed again, this time on the Server side. AcceptSecurityContext failed, returning SEC_E_ALGORITHM_MISMATCH.
TLS is a requirement for my project, but to try getting the sample to run, I next set grbitEnabledProtocols to SP_PROT_SSL2_SERVER. This did work for 2008R2, selecting SSL2, but now the Server failed on Win7 with AcceptSecurityContext returning
SEC_E_ALGORITHM_MISMATCH.
My final try was to set grbitEnabledProtocols to SP_PROT_TLS1_SERVER | SP_PROT_SSL2_SERVER, but that failed identically to the first case, with the Client on 2008R2 returning SEC_E_DECRYPT_FAILURE.
So my question is - What is required to get SChannel to select TLS regardless of the Windows version on which the programs are running?Thank you for the reference. That did provide the information I needed to get TLS working. However, the documentation is not accurate with regard to setting the registry keys and values.
The tables all show DisabledByDefault as a subkey under the protocol. They also describe a DWORD value, Enabled, as the mechanism to enable/disable a protocol.
What I found is DisabledByDefault is a DWORD value under Client/Server and it appears to be the determining factor to whether a protocol is enabled/disabled.
The only way I was able to get TLS 1.1 working is with the following path present:
HKLM SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.1\Client
Under Client, I must have DisabledByDefault set to 0. With that, the Enabled value does not need to be present.
This held true for any level of TLS.
I also found the setting of grbitEnabledProtocols in the SCHANNEL_CRED structure to be misleading. From the description at
https://msdn.microsoft.com/en-us/library/windows/desktop/aa379810(v=vs.85).aspx, I thought my Server program could set this field to 0, and SChannel would select the protocol as directed by the registry. What I found is that the structure flag must
agree with the registry setting for TLS to work. That is with the resgistry key above for TLS 1.1, I must set grbitEnabledProtocols to SP_PROT_TLS1_1.
Can you confirm the relationship between the SCHANNEL_CRED contents and registry state? -
Hi I have a current XP SP3 setup have been using in a dual boot with Windows 8.1(on separate partitions on different hard drives - I think these are SATA drives) but now am thinking of migrating my XP partition preferably as a live virtual machine
to be run as a guest via Windows 8.1 as host so I don't have to do the rebooting. Also prefer this to making a VHD of my XP so can use the existing partition allocated for it rather than taking up extra space as VHD on my windows 8 (and don't want yet
to replace my xp dual boot in case it does not work so well as vhd, as I have a lot of old educational programs my kids still use on it that I don't really want to put onto my W8.1). Will also save time if I don't have to convert it to VHD first. I
also do not want to reinstall a new XP Sp3 virtual machine from scratch for same reason - will take too long to resetup -just use existing as is.
I have used VMWare player and Virtual Box in past with an old 98SE system as a virtual VHD/VPC file but VMWare workstation is paid which may be the one I need to use a physical partition but I prefer to try freeware options first.
Will Hyper-V in Windows 8.1 (I have retail PRO version of both my XP and Windows 8.1) be able to do the same as VMWare workstation? OR is there another option to run the physical XP?
The other thing with my XP setup is that the user profiles that people login with are located on a different partition E (80GB) to my XP which is on J (100GB) and most of the programs for it run from partition D (over 120GB) and the XP boot loader resides
on a partition C (2GB) (which is not the Windows8.1 partition which becomes C only when it boots, but this C drive for XP may also be having the Windows 8 boot loader and files for that -using EasyBCD to handle boot menu of W7 type boot loader).
So I need a system that can mount these other physical partitions also alongside with my XP partition when it boots up.
So what are my options for running this XP SP3 setup via Windows 8 as a guest operating system?
Also will doing this be likely to require reactivation of my existing windows XP (retail) which means I cannot then use it again if I go back to the XP dual boot at times or in case the VM setup does not work?
Also do I need to change my XP first so that it boots off its own drive rather than the C partition - and how do I set this up then using EasyBCD or windows boot repair?HI I found I had to make physical disk offline to use in Hyper-V which I cannot do and do not want to do with all partitions - cannot choose just ones want.
So now am trying to make VM of my physical XP -and other partitions neeeded but D partition is over 127Gb so cannot use Disk2VHD.
Here is what am trying now - any other suggestions for alternate software to vmware convertor/disk2VHD maybe to do partitions over 127GB? I have posted also at VMware forums but no answer as yet.
Advice on doing a physical XPSP3 conversion to a VM for Virtual box and hyper-v ultimately
Hi I need advice as to best way to convert an existing XP Sp3 install on a physical hard drive along with other related partitions to a Virtual box VM image with aim to convert that VM image to a Hyper-V VM for use with Windows 8.1 host.
I have several C (boot ini partition), D programs, E Data, etc partitions and a current dual boot with an extra XP install I use as a backup system.
My main XP is on J drive and other XP on I drive with C drive boot ini that switches btw 2 with J set as default.
I have a D partition that is over 127 Gb so cannot use Disk2VHD which would have been easier, and it seems there is not a way to make a direct Hyper-V VM from converter but only Vmware VM?
I do not have or want to purchase as yet VMware Workstation as have W8.1 Pro that can use Hyper-V to run my XP SP3.
I seem to also have an issue with COM+ corrupted on my machine XP J drive ( It tried to reinstall the COM+ but my es.dll file won't register and I did get a failed conversion with converter when tried earlier at 94% saying VSS snapshots have
reached their limit). I think this is related to my COM+ issue which I am not sure now how to fix apart from repair install of my Xp (as I have tried repairing COM with various articles searched on google to no avail) which I may do first before
retry conversion. However my ALT XP on I drive seems to be fine with being able to browse the COM+ applications ok. SO maybe I can use that instead but it is the J drive XP I want the most (not sure if will work at reboot if I do not
hot clone it?)
I have read also the manual for converter 5.5.1 ver standalone and am not sure of a few things so if someone can guide me it would be very much appreciated.
First of all which version VM should I make image of if I later want to convert it to a Hyper-V VM image (I only have free Virtual Box latest ver, VMware Player and Hyper-V on Windows 8.1 PRo) ie: VMware workstation 10 or Vmware Player 6 or lower
ver or other? OR is there another software I should install for the conversion or later conversion to Hyper-V? I prefer to use Hyper-V over Virtual Box and Vmware Player if possible, but should these others work just as well for my Xp Sp3 existing
system as a VM in Windows 8.1? Please advise which you think is best of these?
Should I leave all configuration options off while converting and even XP licence, workgroup etc or is it most likely that I will have to reactivate my XP (retail ver) once I reboot in the VM although I am putting to run on Windows 8.1 host on exact same
hardware as my current XP in dual boot (replacing my physical copies which I don't intend to use after conversion)? Can I enter licence etc later as well?
I currently have 8 GB ram total -should I leave Xp one at max it suggests of around 3Gb ram?
I have Quad core processor -but should I make Xp Vm one dual core for when it runs on W8.1 host to allow the host some processors so can run at same time or leaving my Xp at quad core will be ok?
Network - I want to use host one as I read it is safer for obsolete XP so do I set that at start or is it better to change this later too -allowing xp to have own internet access (maybe as may need to reactivate also - don't want to call Microsoft
if can avoid it)?
If I just want to convert resulting VM to Hyper-V VM -which software to use after for this that is freeware (Virtual Box or VMware Player or Hyper-V -not sure which can do it) and do I not then install Vmware tools?
SYSPprep should I do anyway regardless of what target VM will be when configuring later, even if on same hardware machine? OR can I just boot Vm and see if boots ok first?
Anything else I should set specifically for this future use of the VM image in hyper-v?
AU
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