Tpm2Lib.AuthSession.RunPolicy C# (CSharp) Method

        public TpmRc RunPolicy(Tpm2 tpm, PolicyTree policyTree, string branchToEvaluate = null, bool allowErrors = false)
        {
            policyTree.AllowErrorsInPolicyEval = allowErrors;

            PolicyAce leafAce = null;

            // First, check that the policy is OK.
            policyTree.CheckPolicy(branchToEvaluate, ref leafAce);
            if (leafAce == null)
            {
                Globs.Throw("RunPolicy: Branch identifier " + branchToEvaluate + " does not exist");
            }

            var responseCode = TpmRc.Success;
            try
            {
                if (allowErrors)
                {
                    tpm._DisableExceptions();
                }

                tpm._InitializeSession(this);

                // Walk up the tree from the leaf..
                PolicyAce nextAce = leafAce;
                while (nextAce != null)
                {
                    responseCode = nextAce.Execute(tpm, this, policyTree);

                    if (responseCode != TpmRc.Success)
                    {
                        break;
                    }

                    // ..and continue along the path to the root
                    nextAce = nextAce.PreviousAce;
                }
            }
            finally
            {
                if (allowErrors)
                {
                    tpm._EnableExceptions();
                }
            }

            return responseCode;
        }
    } // class AuthSession