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Diffstat (limited to 'include/iprt/tpm.h')
| -rw-r--r-- | include/iprt/tpm.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/include/iprt/tpm.h b/include/iprt/tpm.h new file mode 100644 index 00000000..04cd475e --- /dev/null +++ b/include/iprt/tpm.h @@ -0,0 +1,156 @@ +/** @file + * IPRT Trusted Platform Module API abstracting host specific APIs. + */ + +/* + * Copyright (C) 2021-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + +#ifndef IPRT_INCLUDED_tpm_h +#define IPRT_INCLUDED_tpm_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/types.h> + +#include <iprt/formats/tpm.h> + + +RT_C_DECLS_BEGIN + +/** @defgroup grp_rt_tpm IPRT Trusted Platform Module API + * @ingroup grp_rt + * + * This API provides a uniform way to access a Trusted Platform Module across all + * supported hosts. + * + * @{ + */ + + +/** + * TPM version. + */ +typedef enum RTTPMVERSION +{ + /** The usual invalid option. */ + RTTPMVERSION_INVALID = 0, + /** TPM conforms to version 1.2 of the TCG specification. */ + RTTPMVERSION_1_2, + /** TPM conforms to version 2.0 of the TCG specification. */ + RTTPMVERSION_2_0, + /** TPM version couldn't be acquired. */ + RTTPMVERSION_UNKNOWN, + /** Usual 32bit hack. */ + RTTPMVERSION_32BIT_HACK = 0x7fffffff +} RTTPMVERSION; +/** Pointer to a TPM version. */ +typedef RTTPMVERSION *PRTTPMVERSION; + +/** TPM handle. */ +typedef struct RTTPMINT *RTTPM; +/** Pointer to a TPM handle. */ +typedef RTTPM *PRTTPM; +/** NIL TPM handle value. */ +#define NIL_RTTPM ((RTTPM)0) + + +/** Default TPM of the host. */ +#define RTTPM_ID_DEFAULT UINT32_C(0xffffffff) + +/** + * Tries to open the given TPM returning a handle. + * + * @returns IPRT status code. + * @param phTpm Where to store the handle to the TPM module on success. + * @param idTpm The TPM to open, use RTTPM_ID_DEFAULT for the default TPM of the system. + */ +RTDECL(int) RTTpmOpen(PRTTPM phTpm, uint32_t idTpm); + + +/** + * Closes the given TPM handle freeing all allocated resources. + * + * @returns IPRT status code. + * @param hTpm Handle of the TPM to close. + */ +RTDECL(int) RTTpmClose(RTTPM hTpm); + + +/** + * Returns the version of the TPM for the given handle. + * + * @returns Version implemented by the TPM. + * @param hTpm Handle of the TPM. + */ +RTDECL(RTTPMVERSION) RTTpmGetVersion(RTTPM hTpm); + + +/** + * Returns the maximum locality supported by the given TPM. + * + * @returns Maximum locality supported (0-4). + * @param hTpm Handle of the TPM. + */ +RTDECL(uint32_t) RTTpmGetLocalityMax(RTTPM hTpm); + + +/** + * Cancels a currently executed request for the given TPM handle. + * + * @returns IPRT status code. + * @param hTpm Handle of the TPM. + */ +RTDECL(int) RTTpmReqCancel(RTTPM hTpm); + + +/** + * Executes the given request on the given TPM handle. + * + * @returns IPRT status code. + * @param hTpm Handle of the TPM. + * @param bLoc The locality to use (only 0 might be supported on some hosts). + * @param pvReq The request data. + * @param cbReq Size of the request in bytes. + * @param pvResp Where to store the response data. + * @param cbRespMax Size of the response buffer. + * @param pcbResp Where to store the actual size of the response, optional. + */ +RTDECL(int) RTTpmReqExec(RTTPM hTpm, uint8_t bLoc, const void *pvReq, size_t cbReq, + void *pvResp, size_t cbRespMax, size_t *pcbResp); + + +/** @} */ + +RT_C_DECLS_END + +#endif /* !IPRT_INCLUDED_tpm_h */ + |