18792314d7
Using x86 RDRAND instruction, two functions are supplied to generate a 32bit or 64bit number. One potential usage is the sealing key generation for SGX. BUG=chrome-os-partner:62438 BRANCH=NONE TEST=Tested on Eve to generate a 64bit random number. Change-Id: I50cbeda4de17ccf2fc5efc1fe04f6b1a31ec268c Signed-off-by: Robbie Zhang <robbie.zhang@intel.com> Reviewed-on: https://review.coreboot.org/18362 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
27 lines
817 B
C
27 lines
817 B
C
/*
|
|
* This file is part of the coreboot project.
|
|
*
|
|
* Copyright 2017 Intel Corporation.
|
|
*
|
|
* 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; version 2 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.
|
|
*/
|
|
#ifndef _RANDOM_H_
|
|
#define _RANDOM_H_
|
|
|
|
#include <stdint.h>
|
|
|
|
/*
|
|
* Generates a 32/64 bit random number respectively.
|
|
* return 0 on success and -1 on error.
|
|
*/
|
|
int get_random_number_32(uint32_t *rand);
|
|
int get_random_number_64(uint64_t *rand);
|
|
|
|
#endif /* _RANDOM_H_ */
|