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      1 /*
      2  * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are met:
      6  *
      7  * Redistributions of source code must retain the above copyright notice, this
      8  * list of conditions and the following disclaimer.
      9  *
     10  * Redistributions in binary form must reproduce the above copyright notice,
     11  * this list of conditions and the following disclaimer in the documentation
     12  * and/or other materials provided with the distribution.
     13  *
     14  * Neither the name of ARM nor the names of its contributors may be used
     15  * to endorse or promote products derived from this software without specific
     16  * prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
     22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include <assert.h>
     32 #include <auth.h>
     33 #include <debug.h>
     34 
     35 /*
     36  * Initialize the authentication module
     37  */
     38 void auth_init(void)
     39 {
     40 	assert(auth_mod.name);
     41 	assert(auth_mod.init);
     42 	assert(auth_mod.verify);
     43 
     44 	INFO("Using authentication module '%s'\n", auth_mod.name);
     45 	if (auth_mod.init() != 0)
     46 		assert(0);
     47 }
     48 
     49 /*
     50  * Authenticate a certificate/image
     51  *
     52  * Return: 0 = success, Otherwise = error
     53  */
     54 int auth_verify_obj(unsigned int obj_id, uintptr_t obj_buf, size_t len)
     55 {
     56 	assert(obj_id < AUTH_NUM_OBJ);
     57 	assert(obj_buf != 0);
     58 	assert(auth_mod.verify);
     59 
     60 	return auth_mod.verify(obj_id, obj_buf, len);
     61 }
     62