public int StartAuth(Device device, Key parentKey, TPM2_Alg algMode)
{
int rc;
/* Algorithm modes: With parameter encryption use CFB or XOR.
* For HMAC only (no parameter encryption) use NULL. */
if (algMode != TPM2_Alg.NULL &&
algMode != TPM2_Alg.CFB &&
algMode != TPM2_Alg.XOR)
{
return((int)Status.BAD_FUNC_ARG);
}
/* Start an authenticated session (salted / unbound) with
* parameter encryption */
rc = device.StartSession(this, parentKey, IntPtr.Zero,
(byte)SE.HMAC, (int)algMode);
if (rc == (int)Status.TPM_RC_SUCCESS)
{
/* Set session for authorization of the primary key */
rc = device.SetAuthSession(this, this.sessionIdx,
(byte)(SESSION_mask.decrypt | SESSION_mask.encrypt |
SESSION_mask.continueSession));
}
if (rc != (int)Status.TPM_RC_SUCCESS)
{
throw new WolfTpm2Exception("StartAuth", rc);
}
return(rc);
}
public int GetKeyTemplate_ECC(ulong objectAttributes, TPM2_ECC curve,
TPM2_Alg sigScheme)
{
int rc = wolfTPM2_GetKeyTemplate_ECC(template,
objectAttributes,
(uint)curve,
(uint)sigScheme);
if (rc != (int)Status.TPM_RC_SUCCESS)
{
throw new WolfTpm2Exception(
"wolfTPM2_GetKeyTemplate_ECC", rc);
}
return(rc);
}
public int GetKeyTemplate_Symmetric(int keyBits,
TPM2_Alg algMode,
bool isSign,
bool isDecrypt)
{
int rc = wolfTPM2_GetKeyTemplate_Symmetric(template,
keyBits,
(uint)algMode,
isSign ? 1 : 0,
isDecrypt ? 1 : 0);
if (rc != (int)Status.TPM_RC_SUCCESS)
{
throw new WolfTpm2Exception(
"wolfTPM2_GetKeyTemplate_Symmetric", rc);
}
return(rc);
}
