internal override TpmHash GetPolicyDigest(TpmAlgId hashAlg)
{
TpmCc commandCode = 0;
if (TicketType == TpmSt.AuthSecret)
{
commandCode = TpmCc.PolicySecret;
}
else if (TicketType == TpmSt.AuthSigned)
{
commandCode = TpmCc.PolicySigned;
}
else
{
Globs.Throw <ArgumentException>("Ticket type is not recognized");
return(new TpmHash(hashAlg));
}
if (ObjectName == null)
{
ObjectName = AuthorizingKey.GetName();
}
var m = new Marshaller();
m.Put(commandCode, "ordinal");
m.Put(ObjectName, "name");
// ReSharper disable once UnusedVariable
TpmHash atStart = GetNextAcePolicyDigest(hashAlg);
TpmHash firstExtend = GetNextAcePolicyDigest(hashAlg).Extend(m.GetBytes());
TpmHash secondExtend = firstExtend.Extend(PolicyRef);
return(secondExtend);
}
/// <summary>
/// Implements the first step of the policy digest update (see the PolicyUpdate()
/// method), and also used by PolicyAuthorizeNV.
/// </summary>
internal TpmHash PolicyUpdate1(TpmHash currentHash, TpmCc commandCode, byte[] name)
{
var m = new Marshaller();
m.Put(commandCode, "commandCode");
m.Put(name, "name");
return(currentHash.Extend(m.GetBytes()));
}
internal override TpmHash GetPolicyDigest(TpmAlgId hashAlg)
{
var m = new Marshaller();
m.Put(TpmCc.PolicyNvWritten, "ordinal");
byte writtenName = IsNvIndexRequiredToHaveBeenWritten ? (byte)1 : (byte)0;
m.Put(writtenName, "writtenSet");
TpmHash previous = GetNextAcePolicyDigest(hashAlg);
return(previous.Extend(m.GetBytes()));
}
internal override TpmHash GetPolicyDigest(TpmAlgId hashAlg)
{
var m = new Marshaller();
m.Put(TpmCc.PolicyDuplicationSelect, "ordinal");
if (IncludeObjectNameInPolicyHash)
{
m.Put(NameOfObject, "objectName");
}
m.Put(NameOfNewParent, "newParent");
byte includeName = IncludeObjectNameInPolicyHash ? (byte)1 : (byte)0;
m.Put(includeName, "includeObject");
TpmHash previous = GetNextAcePolicyDigest(hashAlg);
return(previous.Extend(m.GetBytes()));
}
internal override TpmHash GetPolicyDigest(TpmAlgId hashAlg)
{
var m = new Marshaller();
m.Put(OperandB, "operandB");
m.Put(Offset, "offset");
m.Put(Operation, "operation");
byte[] toHash = m.GetBytes();
byte[] args = CryptoLib.HashData(hashAlg, toHash);
m = new Marshaller();
m.Put(TpmCc.PolicyCounterTimer, "cc");
m.Put(args, "args");
TpmHash tailHash = GetNextAcePolicyDigest(hashAlg);
TpmHash hashNow = tailHash.Extend(m.GetBytes());
return(hashNow);
}
/// <summary>
/// Implements the first step of the policy digest update (see the PolicyUpdate()
/// method), and also used by PolicyAuthorizeNV.
/// </summary>
internal TpmHash PolicyUpdate1(TpmHash currentHash, TpmCc commandCode, byte[] name)
{
var m = new Marshaller();
m.Put(commandCode, "commandCode");
m.Put(name, "name");
return currentHash.Extend(m.GetBytes());
}
/// <summary>
/// Return an updated policy hash according to the TPM specification.
/// </summary>
/// <param name="?"></param>
/// <param name="currentHash"></param>
/// <param name="commandCode"></param>
/// <param name="name"></param>
/// <param name="refData"></param>
/// <returns></returns>
internal TpmHash PolicyUpdate(TpmHash currentHash, TpmCc commandCode, byte[] name, byte[] refData)
{
var m = new Marshaller();
m.Put(commandCode, "commandCode");
m.Put(name, "name");
TpmHash h1 = currentHash.Extend(m.GetBytes());
TpmHash h2 = h1.Extend(refData);
return h2;
}