This file is used by vgo (go get -u golang.org/x/vgo) and will be understood by Go 1.11 and later too. Normally a go.mod file lists required dependencies of a module (think repository), but this module has no required dependencies, so the file only gives the module path. Defining the module path ensures that clients import the package under its canonical name, not under alternate casings such as import "github.com/thomsonREUTERSeIkOn/go-ntlm" which would otherwise work (since GitHub answers to that path). Having a go.mod file also makes it possible to work on this repository outside GOPATH when using vgo or Go 1.11. That is, the go.mod file makes it possible to git clone https://github.com/ThomsonReutersEikon/go-ntlm cd go-ntlm vgo build ./... vgo test ./... from anywhere, not just inside GOPATH.
NTLM Implementation for Go
This is a native implementation of NTLM for Go that was implemented using the Microsoft MS-NLMP documentation available at http://msdn.microsoft.com/en-us/library/cc236621.aspx. The library is currently in use and has been tested with connectionless NTLMv1 and v2 with and without extended session security.
Usage Notes
Currently the implementation only supports connectionless (datagram) oriented NTLM. We did not need connection oriented NTLM for our usage and so it is not implemented. However it should be extremely straightforward to implement connection oriented NTLM as all the operations required are present in the library. The major missing piece is the negotiation of capabilities between the client and the server, for our use we hardcoded a supported set of negotiation flags.
Sample Usage as NTLM Client
import "github.com/ThomsonReutersEikon/go-ntlm/ntlm"
session, err = ntlm.CreateClientSession(ntlm.Version2, ntlm.ConnectionlessMode)
session.SetUserInfo("someuser","somepassword","somedomain")
negotiate := session.GenerateNegotiateMessage()
<send negotiate to server>
challenge, err := ntlm.ParseChallengeMessage(challengeBytes)
session.ProcessChallengeMessage(challenge)
authenticate := session.GenerateAuthenticateMessage()
<send authenticate message to server>
Sample Usage as NTLM Server
session, err := ntlm.CreateServerSession(ntlm.Version1, ntlm.ConnectionlessMode)
session.SetUserInfo("someuser","somepassword","somedomain")
challenge := session.GenerateChallengeMessage()
<send challenge to client>
<receive authentication bytes>
auth, err := ntlm.ParseAuthenticateMessage(authenticateBytes)
session.ProcessAuthenticateMessage(auth)
Generating a message MAC
Once a session is created you can generate the Mac for a message using:
message := "this is some message to sign"
sequenceNumber := 100
signature, err := session.Mac([]byte(message), sequenceNumber)
License
Copyright Thomson Reuters Global Resources 2013 Apache License