/* * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 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. * * Neither the name of ARM 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; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 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 AUTH_H_ #define AUTH_H_ #include #include /* * Authentication infrastructure for Trusted Boot * * This infrastructure provides an API to access the authentication module. This * module will implement the required operations for Trusted Boot by creating an * instance of the structure 'auth_mod_t'. This instance must be called * 'auth_mod' and must provide the functions to initialize the module and * verify the authenticity of the images. */ /* Objects (images and certificates) involved in the TBB process */ enum { AUTH_BL2_IMG_CERT, AUTH_BL2_IMG, AUTH_TRUSTED_KEY_CERT, AUTH_BL30_KEY_CERT, AUTH_BL30_IMG_CERT, AUTH_BL30_IMG, AUTH_BL31_KEY_CERT, AUTH_BL31_IMG_CERT, AUTH_BL31_IMG, AUTH_BL32_KEY_CERT, AUTH_BL32_IMG_CERT, AUTH_BL32_IMG, AUTH_BL33_KEY_CERT, AUTH_BL33_IMG_CERT, AUTH_BL33_IMG, AUTH_NUM_OBJ }; /* Authentication module structure */ typedef struct auth_mod_s { /* [mandatory] Module name. Printed to the log during initialization */ const char *name; /* [mandatory] Initialize the authentication module */ int (*init)(void); /* [mandatory] This function will be called to authenticate a new * object loaded into memory. The obj_id corresponds to one of the * values in the enumeration above */ int (*verify)(unsigned int obj_id, uintptr_t obj_buf, size_t len); } auth_mod_t; /* This variable must be instantiated by the authentication module */ extern const auth_mod_t auth_mod; /* Public functions */ void auth_init(void); int auth_verify_obj(unsigned int obj_id, uintptr_t obj_buf, size_t len); #endif /* AUTH_H_ */