C# Signature:

[DllImport("secur32.dll", SetLastError=true)]
  static extern int AcquireCredentialsHandle(
    string pszPrincipal, //SEC_CHAR*
    string pszPackage, //SEC_CHAR* //"Kerberos","NTLM","Negotiative"
    int fCredentialUse,
    IntPtr PAuthenticationID,//_LUID AuthenticationID,//pvLogonID, //PLUID
    IntPtr pAuthData,//PVOID
    int pGetKeyFn, //SEC_GET_KEY_FN
    IntPtr pvGetKeyArgument, //PVOID
    ref SECURITY_HANDLE phCredential, //SecHandle //PCtxtHandle ref
    ref SECURITY_INTEGER ptsExpiry); //PTimeStamp //TimeStamp ref

VB Signature:

Declare Function AcquireCredentialsHandle Lib "secur32.dll" (TODO) As TODO

User-Defined Types:

None.

Notes:

None.

Tips & Tricks:

Please add some!

Sample Code:

See InitializeSecurityContext for complete sample

Alternative Managed API:

Do you know one? Please contribute it!