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early-access version 1503

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pineappleEA
2021-03-06 01:41:47 +01:00
parent a37fdd48d5
commit 3fd627d0ba
558 changed files with 55823 additions and 15727 deletions
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59
externals/mbedtls/library/havege.c vendored
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@@ -1,8 +1,31 @@
/**
* \brief HAVEGE: HArdware Volatile Entropy Gathering and Expansion
*
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: GPL-2.0
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
*
* This file is provided under the Apache License 2.0, or the
* GNU General Public License v2.0 or later.
*
* **********
* Apache License 2.0:
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* **********
*
* **********
* GNU General Public License v2.0 or later:
*
* 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
@@ -18,7 +41,7 @@
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This file is part of mbed TLS (https://tls.mbed.org)
* **********
*/
/*
* The HAVEGE RNG was designed by Andre Seznec in 2002.
@@ -40,8 +63,19 @@
#include "mbedtls/timing.h"
#include "mbedtls/platform_util.h"
#include <limits.h>
#include <string.h>
/* If int isn't capable of storing 2^32 distinct values, the code of this
* module may cause a processor trap or a miscalculation. If int is more
* than 32 bits, the code may not calculate the intended values. */
#if INT_MIN + 1 != -0x7fffffff
#error "The HAVEGE module requires int to be exactly 32 bits, with INT_MIN = -2^31."
#endif
#if UINT_MAX != 0xffffffff
#error "The HAVEGE module requires unsigned to be exactly 32 bits."
#endif
/* ------------------------------------------------------------------------
* On average, one iteration accesses two 8-word blocks in the havege WALK
* table, and generates 16 words in the RES array.
@@ -56,7 +90,7 @@
* ------------------------------------------------------------------------
*/
#define SWAP(X,Y) { int *T = X; X = Y; Y = T; }
#define SWAP(X,Y) { unsigned *T = (X); (X) = (Y); (Y) = T; }
#define TST1_ENTER if( PTEST & 1 ) { PTEST ^= 3; PTEST >>= 1;
#define TST2_ENTER if( PTEST & 1 ) { PTEST ^= 3; PTEST >>= 1;
@@ -79,7 +113,7 @@
PTX = (PT1 >> 18) & 7; \
PT1 &= 0x1FFF; \
PT2 &= 0x1FFF; \
CLK = (int) mbedtls_timing_hardclock(); \
CLK = (unsigned) mbedtls_timing_hardclock(); \
\
i = 0; \
A = &WALK[PT1 ]; RES[i++] ^= *A; \
@@ -102,7 +136,7 @@
\
IN = (*A >> (5)) ^ (*A << (27)) ^ CLK; \
*A = (*B >> (6)) ^ (*B << (26)) ^ CLK; \
*B = IN; CLK = (int) mbedtls_timing_hardclock(); \
*B = IN; CLK = (unsigned) mbedtls_timing_hardclock(); \
*C = (*C >> (7)) ^ (*C << (25)) ^ CLK; \
*D = (*D >> (8)) ^ (*D << (24)) ^ CLK; \
\
@@ -153,19 +187,20 @@
PT1 ^= (PT2 ^ 0x10) & 0x10; \
\
for( n++, i = 0; i < 16; i++ ) \
hs->pool[n % MBEDTLS_HAVEGE_COLLECT_SIZE] ^= RES[i];
POOL[n % MBEDTLS_HAVEGE_COLLECT_SIZE] ^= RES[i];
/*
* Entropy gathering function
*/
static void havege_fill( mbedtls_havege_state *hs )
{
int i, n = 0;
int U1, U2, *A, *B, *C, *D;
int PT1, PT2, *WALK, RES[16];
int PTX, PTY, CLK, PTEST, IN;
unsigned i, n = 0;
unsigned U1, U2, *A, *B, *C, *D;
unsigned PT1, PT2, *WALK, *POOL, RES[16];
unsigned PTX, PTY, CLK, PTEST, IN;
WALK = hs->WALK;
WALK = (unsigned *) hs->WALK;
POOL = (unsigned *) hs->pool;
PT1 = hs->PT1;
PT2 = hs->PT2;