xref: /external/tpm2/HMAC_fp.h

// Copyright 2015 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// THIS CODE IS GENERATED - DO NOT MODIFY!

#ifndef TPM2_HMAC_FP_H_
#define TPM2_HMAC_FP_H_

#include "tpm_generated.h"

typedef struct {
  TPMI_DH_OBJECT handle;
  TPM2B_MAX_BUFFER buffer;
  TPMI_ALG_HASH hashAlg;
} HMAC_In;

typedef struct { TPM2B_DIGEST outHMAC; } HMAC_Out;

// Executes HMAC with request handles and parameters from
// |in| and computes response handles and parameters to |out|.
TPM_RC TPM2_HMAC(HMAC_In* in, HMAC_Out* out);

// Initializes handle fields in |target| from |request_handles|. Unmarshals
// parameter fields in |target| from |buffer|.
TPM_RC HMAC_In_Unmarshal(HMAC_In* target,
                         TPM_HANDLE request_handles[],
                         BYTE** buffer,
                         INT32* size);

// Marshals response handles and parameters from |source| to |buffer|. Computes
// and marshals the size of the parameter area (parameter_size) if |tag| ==
// TPM_ST_SESSIONS. Returns size of (parameter area + handle area) in bytes.
// Return value does not include parameter_size field.
UINT16 HMAC_Out_Marshal(HMAC_Out* source,
                        TPMI_ST_COMMAND_TAG tag,
                        BYTE** buffer,
                        INT32* size);

// Unmarshals any request parameters starting at |request_parameter_buffer|.
// Executes command. Marshals any response handles and parameters to the
// global response buffer and computes |*response_handle_buffer_size| and
// |*response_parameter_buffer_size|. If |tag| == TPM_ST_SESSIONS, marshals
// parameter_size indicating the size of the parameter area. parameter_size
// field is located between the handle area and parameter area.
TPM_RC Exec_HMAC(TPMI_ST_COMMAND_TAG tag,
                 BYTE** request_parameter_buffer,
                 INT32* request_parameter_buffer_size,
                 TPM_HANDLE request_handles[],
                 UINT32* response_handle_buffer_size,
                 UINT32* response_parameter_buffer_size);

#endif  // TPM2_HMAC_FP_H