1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
/*
* Non-physical true random number generator based on timing jitter.
*
* Copyright Stephan Mueller <smueller@chronox.de>, 2013 - 2019
*
* License
* =======
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 2. 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.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* ALTERNATIVELY, this product may be distributed under the terms of
* the GNU General Public License, in which case the provisions of the GPL are
* required INSTEAD OF the above restrictions. (This clause is
* necessary due to a potential bad interaction between the GPL and
* the restrictions contained in a BSD-style copyright.)
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
* WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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 NOT ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
/* Adapted for VeraCrypt */
#pragma once
#include "Common/Tcdefs.h"
#include "misc.h"
#include "cpu.h"
#include <stdlib.h>
#include <string.h>
#ifdef _MSC_VER
typedef uint64 uint64_t;
typedef int64 int64_t;
#ifndef _UEFI
#define CONFIG_CRYPTO_CPU_JITTERENTROPY_SECURE_MEMORY
#endif
#ifndef _UEFI
typedef SSIZE_T ssize_t;
#else
#if CRYPTOPP_BOOL_X64
typedef int64 ssize_t;
#else
typedef int32 ssize_t;
#endif
#endif
static VC_INLINE void jent_get_nstime(uint64 *out)
{
#ifdef _M_ARM64
LARGE_INTEGER v = { 0 };
#ifdef TC_WINDOWS_DRIVER
v = KeQueryPerformanceCounter(NULL);
#else
QueryPerformanceCounter(&v);
#endif
* out = v.QuadPart;
#else
*out = __rdtsc();;
#endif
}
#else
#if CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X64
/* taken from Linux kernel */
#if CRYPTOPP_BOOL_X64
#define DECLARE_ARGS(val, low, high) unsigned low, high
#define EAX_EDX_VAL(val, low, high) ((low) | ((uint64)(high) << 32))
#define EAX_EDX_RET(val, low, high) "=a" (low), "=d" (high)
#else
#define DECLARE_ARGS(val, low, high) unsigned long long val
#define EAX_EDX_VAL(val, low, high) (val)
#define EAX_EDX_RET(val, low, high) "=A" (val)
#endif
VC_INLINE void jent_get_nstime(uint64 *out)
{
DECLARE_ARGS(val, low, high);
asm volatile("rdtsc" : EAX_EDX_RET(val, low, high));
*out = EAX_EDX_VAL(val, low, high);
}
#else
#include <time.h>
VC_INLINE void jent_get_nstime(uint64 *out)
{
/* we could use CLOCK_MONOTONIC(_RAW), but with CLOCK_REALTIME
* we get some nice extra entropy once in a while from the NTP actions
* that we want to use as well... though, we do not rely on that
* extra little entropy */
uint64_t tmp = 0;
struct timespec time;
if (clock_gettime(CLOCK_REALTIME, &time) == 0)
{
tmp = time.tv_sec;
tmp = tmp << 32;
tmp = tmp | time.tv_nsec;
}
*out = tmp;
}
#endif
#endif
#ifdef _MSC_VER
static
#endif
VC_INLINE void *jent_zalloc(size_t len)
{
void *tmp = NULL;
tmp = TCalloc(len);
if(NULL != tmp)
{
memset(tmp, 0, len);
#if defined(_WIN32) && !defined(TC_WINDOWS_DRIVER) && !defined(_UEFI)
VirtualLock (tmp, len);
#endif
}
return tmp;
}
#ifdef _MSC_VER
static
#endif
VC_INLINE void jent_zfree(void *ptr, unsigned int len)
{
if (len % 8)
burn(ptr, len);
else
FAST_ERASE64(ptr, len);
#if defined(_WIN32) && !defined(TC_WINDOWS_DRIVER) && !defined(_UEFI)
VirtualUnlock (ptr, len);
#endif
TCfree(ptr);
}
#ifdef _MSC_VER
static
#endif
VC_INLINE int jent_fips_enabled(void)
{
return 1;
}
/* --- helpers needed in user space -- */
#define rol64(x,n) rotl64(x,n)
|
