/// <summary>
/// Create a simple unbound & unseeded session supporting session encryption.
/// </summary>
public AuthSession CancelSafeStartAuthSession(
TpmSe sessionType,
TpmAlgId authHash,
int nonceCallerSize = 16)
{
byte[] nonceTpm;
var EmptySalt = new byte[0];
TpmHandle hSess;
var ctx = new CancelationCtx(this, "FlushContext");
do {
_AllowErrors();
hSess = StartAuthSession(TpmRh.Null, TpmRh.Null,
GetRandomBytes(nonceCallerSize), EmptySalt,
sessionType, new SymDef(), authHash, out nonceTpm);
} while (ctx.NeedRetry());
ctx.Done();
AuthSession sess = hSess + SessionAttr.ContinueSession;
_InitializeSession(sess);
return sess;
}
} // class CancelationCtx
public bool CancelSafeFlushContext(TpmHandle h)
{
if (h == null || h.handle == 0 /*|| h.handle == TpmRh.Null*/)
return false;
var ctx = new CancelationCtx(this, "FlushContext");
do {
_AllowErrors().FlushContext(h);
} while (ctx.NeedRetry());
return ctx.Done();
}
