b1952cbb9d
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: I5e2768ba499f1e008c9b68feae68b368cedaaa39
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 18792314d7
Original-Change-Id: I50cbeda4de17ccf2fc5efc1fe04f6b1a31ec268c
Original-Signed-off-by: Robbie Zhang <robbie.zhang@intel.com>
Original-Reviewed-on: https://review.coreboot.org/18362
Original-Tested-by: build bot (Jenkins)
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/445138
27 lines
817 B
C
27 lines
817 B
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2017 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _RANDOM_H_
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#define _RANDOM_H_
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#include <stdint.h>
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/*
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* Generates a 32/64 bit random number respectively.
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* return 0 on success and -1 on error.
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*/
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int get_random_number_32(uint32_t *rand);
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int get_random_number_64(uint64_t *rand);
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#endif /* _RANDOM_H_ */
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