tee/TlcTeeKeymaster4/include/tlcTeeKeymaster_if.h

/*
 * Copyright (c) 2013-2018,2020 TRUSTONIC LIMITED
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the TRUSTONIC LIMITED nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef TLCTEEKEYMASTERN_IF_H
#define TLCTEEKEYMASTERN_IF_H

#ifdef __cplusplus
extern "C" {
#endif

#include <stdint.h>
#include <stdbool.h>
#include "MobiCoreDriverApi.h"
#include "tlTeeKeymaster_Api.h"

typedef void *TEE_SessionHandle;

struct operation {
    /* I'm indexing these based on the handles chosen by the TA.  The
     * specification says that they must be unpredictable (maybe they're
     * published beyond our process?) and I don't want that responsibility
     * here.  While the number of concurrent operations is small, we can just
     * do a linear search.
     */
    keymaster_operation_handle_t handle;
    bool live;
    keymaster_algorithm_t algorithm;
    size_t final_length;
};

/**
 * Map a buffer.
 */
keymaster_error_t map_buffer(
    mcSessionHandle_t* session_handle,
    const uint8_t *buf, uint32_t buflen,
    mcBulkMap_t *bufinfo);

/**
 * Unmap a buffer.
 */
void unmap_buffer(
    mcSessionHandle_t* session_handle,
    const uint8_t *buf,
    mcBulkMap_t *bufinfo);

/**
 * Notify the trusted application and wait for response.
 */
keymaster_error_t transact(
    mcSessionHandle_t* session_handle,
    tciMessage_ptr tci);

struct TEE_Session {
    tciMessage_ptr      pTci;
    mcSessionHandle_t   sessionHandle;
    struct operation    op[MAX_SESSION_NUM];
    unsigned            live_ops;
};

/**
 * Open session to the TEE Keymaster trusted application
 *
 * @param  pSessionHandle  [out] Return pointer to the session handle
 *
 * @return Zero, or negative @c errno value
 */
int TEE_Open(
    TEE_SessionHandle                 *sessionHandle);

/**
 * Close session to the TEE Keymaster trusted application
 *
 * @param  sessionHandle  [in] Session handle
 */
void TEE_Close(
    TEE_SessionHandle sessionHandle);

keymaster_error_t TEE_Configure(
    TEE_SessionHandle session_handle,
    const keymaster_key_param_set_t* params);

keymaster_error_t TEE_AddRngEntropy(
    TEE_SessionHandle session_handle,
    const uint8_t* data,
    uint32_t dataLength);

keymaster_error_t TEE_GenerateKey(
    TEE_SessionHandle session_handle,
    const keymaster_key_param_set_t* params,
    keymaster_key_blob_t* key_blob,
    keymaster_key_characteristics_t* characteristics);

keymaster_error_t TEE_GetKeyCharacteristics(
    TEE_SessionHandle session_handle,
    const keymaster_key_blob_t* key_blob,
    const keymaster_blob_t* client_id,
    const keymaster_blob_t* app_data,
    keymaster_key_characteristics_t* characteristics);

keymaster_error_t TEE_ImportKey(
    TEE_SessionHandle session_handle,
    const keymaster_key_param_set_t* params,
    keymaster_key_format_t key_format,
    const keymaster_blob_t* key_data,
    keymaster_key_blob_t* key_blob,
    keymaster_key_characteristics_t* characteristics);

keymaster_error_t TEE_ExportKey(
    TEE_SessionHandle session_handle,
    keymaster_key_format_t export_format,
    const keymaster_key_blob_t* key_to_export,
    const keymaster_blob_t* client_id,
    const keymaster_blob_t* app_data,
    keymaster_blob_t* export_data);

keymaster_error_t TEE_AttestKey(
    TEE_SessionHandle session_handle,
    const keymaster_key_blob_t* key_to_attest,
    const keymaster_key_param_set_t* attest_params,
    keymaster_cert_chain_t* cert_chain);

keymaster_error_t TEE_UpgradeKey(
    TEE_SessionHandle session_handle,
    const keymaster_key_blob_t* key_to_upgrade,
    const keymaster_key_param_set_t* upgrade_params,
    keymaster_key_blob_t* upgraded_key);

keymaster_error_t TEE_Begin(
    TEE_SessionHandle session_handle,
    keymaster_purpose_t purpose,
    const keymaster_key_blob_t* key,
    const keymaster_key_param_set_t* params,
    const keymaster_hw_auth_token_t *auth_token,
    keymaster_key_param_set_t* out_params,
    keymaster_operation_handle_t* operation_handle);

keymaster_error_t TEE_Update(
    TEE_SessionHandle session_handle,
    keymaster_operation_handle_t operation_handle,
    const keymaster_key_param_set_t* params,
    const keymaster_blob_t* input,
    const keymaster_hw_auth_token_t *auth_token,
    size_t* input_consumed,
    keymaster_key_param_set_t* out_params,
    keymaster_blob_t* output);

keymaster_error_t TEE_Finish(
    TEE_SessionHandle session_handle,
    keymaster_operation_handle_t operation_handle,
    const keymaster_key_param_set_t* params,
    const keymaster_blob_t* input,
    const keymaster_blob_t* signature,
    const keymaster_hw_auth_token_t *auth_token,
    keymaster_key_param_set_t* out_params,
    keymaster_blob_t* output);

keymaster_error_t TEE_Abort(
    TEE_SessionHandle session_handle,
    keymaster_operation_handle_t operation_handle);

keymaster_error_t TEE_ImportWrappedKey(
    TEE_SessionHandle session_handle,
    const keymaster_blob_t* wrapped_key_data,
    const keymaster_key_blob_t* wrapping_key_blob,
    const uint8_t* masking_key,
    const keymaster_key_param_set_t* unwrapping_params,
    uint64_t password_sid,
    uint64_t biometric_sid,
    keymaster_key_blob_t* key_blob,
    keymaster_key_characteristics_t* key_characteristics);

keymaster_error_t TEE_GetHmacSharingParameters(
    TEE_SessionHandle session_handle,
    keymaster_hmac_sharing_parameters_t* out_params);

keymaster_error_t TEE_ComputeSharedMac(
    TEE_SessionHandle session_handle,
    const keymaster_hmac_sharing_parameters_set_t* sharing_params,
    keymaster_blob_t *sharing_check);

keymaster_error_t TEE_VerifyAuthorization(
    TEE_SessionHandle session_handle,
    keymaster_operation_handle_t operation_handle,
    const keymaster_key_param_set_t* parameters_to_verify,
    const keymaster_hw_auth_token_t* hw_auth_token,
    keymaster_verification_token_t* verification_token);

keymaster_error_t TEE_DestroyAttestationIds(
    TEE_SessionHandle session_handle);

keymaster_error_t TEE_EarlyBootEnded(
    TEE_SessionHandle session_handle);

#ifdef __cplusplus
}
#endif

#endif /* TLCTEEKEYMASTERN_IF_H */