| private ReadPublic ( TpmHandle objectHandle, [ name, [ qualifiedName ) : TpmPublic | ||
| objectHandle | TpmHandle | |
| name | [ | |
| qualifiedName | [ | |
| return | TpmPublic | |
TkVerified SignApproval(Tpm2 tpm, byte[] approvedPolicy, byte[] policyRef,
TpmHandle hSigKey, ISigSchemeUnion scheme = null)
{
byte[] name, qname;
TpmPublic pub = tpm.ReadPublic(hSigKey, out name, out qname);
byte[] dataToSign = Globs.Concatenate(approvedPolicy, policyRef);
byte[] aHash = CryptoLib.HashData(pub.nameAlg, dataToSign);
// Create an authorization certificate for the "approvedPolicy"
var sig = tpm.Sign(hSigKey, aHash, scheme, new TkHashcheck());
return(tpm.VerifySignature(hSigKey, aHash, sig));
}
/// <summary>
/// Returns the cached name of an entity referenced by this handle. If the
/// name is not cached yet, retrieves it from the TPM (for a transient or
/// persistent object, or NV index) or computes it (for session, PCR or
/// permanent handles).
/// </summary>
public byte[] GetName(Tpm2 tpm)
{
Ht ht = GetType();
if (_Name == null)
{
if (ht == Ht.NvIndex)
{
tpm.NvReadPublic(this, out _Name);
return(_Name);
}
if (ht == Ht.Transient || ht == Ht.Persistent)
{
byte[] qName;
tpm.ReadPublic(this, out _Name, out qName);
return(_Name);
}
}
return(GetName());
}
public byte[] GetName(Tpm2 tpm)
{
Ht ht = GetType();
if (_Name == null)
{
if (ht == Ht.NvIndex)
{
tpm.NvReadPublic(this, out _Name);
return _Name;
}
if (ht == Ht.Transient || ht == Ht.Persistent)
{
byte[] qName;
tpm.ReadPublic(this, out _Name, out qName);
return _Name;
}
}
return GetName();
}
public string GetHardwareDeviceId()
{
TpmHandle srkHandle = new TpmHandle(SRK_HANDLE);
string hardwareDeviceId = "";
Byte[] name;
Byte[] qualifiedName;
try
{
// Open the TPM
Tpm2Device tpmDevice = new TbsDevice();
tpmDevice.Connect();
var tpm = new Tpm2(tpmDevice);
// Read the URI from the TPM
TpmPublic srk = tpm.ReadPublic(srkHandle, out name, out qualifiedName);
// Dispose of the TPM
tpm.Dispose();
}
catch
{
return hardwareDeviceId;
}
// Calculate the hardware device id for this logical device
byte[] deviceId = CryptoLib.HashData(TpmAlgId.Sha256, BitConverter.GetBytes(logicalDeviceId), name);
// Produce the output string
foreach (byte n in deviceId)
{
hardwareDeviceId += n.ToString("x2");
}
return hardwareDeviceId;
}
