MultiTech / CyaSSL

A library for setting up Secure Socket Layer (SSL) connections and verifying remote hosts using certificates. Contains only the source files for mbed platform implementation of the library.

Dependents:   HTTPClient-SSL HTTPClient-SSL HTTPClient-SSL HTTPClient-SSL

ctaocrypt/src/misc.c@6:cf58d49e1a86, 2015-03-23 (annotated)

Committer:
Mike Fiore
Date:
Mon Mar 23 16:51:07 2015 -0500
Revision:
6:cf58d49e1a86
Parent:
0:b86d15c6ba29 
fix whitespace in sha512.c

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Vanger 0:b86d15c6ba29 1 /* misc.c
Vanger 0:b86d15c6ba29 2 *
Vanger 0:b86d15c6ba29 3 * Copyright (C) 2006-2014 wolfSSL Inc.
Vanger 0:b86d15c6ba29 4 *
Vanger 0:b86d15c6ba29 5 * This file is part of CyaSSL.
Vanger 0:b86d15c6ba29 6 *
Vanger 0:b86d15c6ba29 7 * CyaSSL is free software; you can redistribute it and/or modify
Vanger 0:b86d15c6ba29 8 * it under the terms of the GNU General Public License as published by
Vanger 0:b86d15c6ba29 9 * the Free Software Foundation; either version 2 of the License, or
Vanger 0:b86d15c6ba29 10 * (at your option) any later version.
Vanger 0:b86d15c6ba29 11 *
Vanger 0:b86d15c6ba29 12 * CyaSSL is distributed in the hope that it will be useful,
Vanger 0:b86d15c6ba29 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
Vanger 0:b86d15c6ba29 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Vanger 0:b86d15c6ba29 15 * GNU General Public License for more details.
Vanger 0:b86d15c6ba29 16 *
Vanger 0:b86d15c6ba29 17 * You should have received a copy of the GNU General Public License
Vanger 0:b86d15c6ba29 18 * along with this program; if not, write to the Free Software
Vanger 0:b86d15c6ba29 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
Vanger 0:b86d15c6ba29 20 */
Vanger 0:b86d15c6ba29 21
Vanger 0:b86d15c6ba29 22 #ifdef HAVE_CONFIG_H
Vanger 0:b86d15c6ba29 23 #include <config.h>
Vanger 0:b86d15c6ba29 24 #endif
Vanger 0:b86d15c6ba29 25
Vanger 0:b86d15c6ba29 26 #include <cyassl/ctaocrypt/settings.h>
Vanger 0:b86d15c6ba29 27
Vanger 0:b86d15c6ba29 28 #include <cyassl/ctaocrypt/misc.h>
Vanger 0:b86d15c6ba29 29
Vanger 0:b86d15c6ba29 30 /* inlining these functions is a huge speed increase and a small size decrease,
Vanger 0:b86d15c6ba29 31 because the functions are smaller than function call setup/cleanup, e.g.,
Vanger 0:b86d15c6ba29 32 md5 benchmark is twice as fast with inline. If you don't want it, then
Vanger 0:b86d15c6ba29 33 define NO_INLINE and compile this file into cyassl, otherwise it's used as
Vanger 0:b86d15c6ba29 34 a source header
Vanger 0:b86d15c6ba29 35 */
Vanger 0:b86d15c6ba29 36
Vanger 0:b86d15c6ba29 37 #ifdef NO_INLINE
Vanger 0:b86d15c6ba29 38 #define STATIC
Vanger 0:b86d15c6ba29 39 #else
Vanger 0:b86d15c6ba29 40 #define STATIC static
Vanger 0:b86d15c6ba29 41 #endif
Vanger 0:b86d15c6ba29 42
Vanger 0:b86d15c6ba29 43
Vanger 0:b86d15c6ba29 44 #ifdef INTEL_INTRINSICS
Vanger 0:b86d15c6ba29 45
Vanger 0:b86d15c6ba29 46 #include <stdlib.h> /* get intrinsic definitions */
Vanger 0:b86d15c6ba29 47
Vanger 0:b86d15c6ba29 48 /* for non visual studio probably need no long version, 32 bit only
Vanger 0:b86d15c6ba29 49 * i.e., _rotl and _rotr */
Vanger 0:b86d15c6ba29 50 #pragma intrinsic(_lrotl, _lrotr)
Vanger 0:b86d15c6ba29 51
Vanger 0:b86d15c6ba29 52 STATIC INLINE word32 rotlFixed(word32 x, word32 y)
Vanger 0:b86d15c6ba29 53 {
Vanger 0:b86d15c6ba29 54 return y ? _lrotl(x, y) : x;
Vanger 0:b86d15c6ba29 55 }
Vanger 0:b86d15c6ba29 56
Vanger 0:b86d15c6ba29 57 STATIC INLINE word32 rotrFixed(word32 x, word32 y)
Vanger 0:b86d15c6ba29 58 {
Vanger 0:b86d15c6ba29 59 return y ? _lrotr(x, y) : x;
Vanger 0:b86d15c6ba29 60 }
Vanger 0:b86d15c6ba29 61
Vanger 0:b86d15c6ba29 62 #else /* generic */
Vanger 0:b86d15c6ba29 63
Vanger 0:b86d15c6ba29 64 STATIC INLINE word32 rotlFixed(word32 x, word32 y)
Vanger 0:b86d15c6ba29 65 {
Vanger 0:b86d15c6ba29 66 return (x << y) | (x >> (sizeof(y) * 8 - y));
Vanger 0:b86d15c6ba29 67 }
Vanger 0:b86d15c6ba29 68
Vanger 0:b86d15c6ba29 69
Vanger 0:b86d15c6ba29 70 STATIC INLINE word32 rotrFixed(word32 x, word32 y)
Vanger 0:b86d15c6ba29 71 {
Vanger 0:b86d15c6ba29 72 return (x >> y) | (x << (sizeof(y) * 8 - y));
Vanger 0:b86d15c6ba29 73 }
Vanger 0:b86d15c6ba29 74
Vanger 0:b86d15c6ba29 75 #endif
Vanger 0:b86d15c6ba29 76
Vanger 0:b86d15c6ba29 77
Vanger 0:b86d15c6ba29 78 STATIC INLINE word32 ByteReverseWord32(word32 value)
Vanger 0:b86d15c6ba29 79 {
Vanger 0:b86d15c6ba29 80 #ifdef PPC_INTRINSICS
Vanger 0:b86d15c6ba29 81 /* PPC: load reverse indexed instruction */
Vanger 0:b86d15c6ba29 82 return (word32)__lwbrx(&value,0);
Vanger 0:b86d15c6ba29 83 #elif defined(KEIL_INTRINSICS)
Vanger 0:b86d15c6ba29 84 return (word32)__rev(value);
Vanger 0:b86d15c6ba29 85 #elif defined(FAST_ROTATE)
Vanger 0:b86d15c6ba29 86 /* 5 instructions with rotate instruction, 9 without */
Vanger 0:b86d15c6ba29 87 return (rotrFixed(value, 8U) & 0xff00ff00) |
Vanger 0:b86d15c6ba29 88 (rotlFixed(value, 8U) & 0x00ff00ff);
Vanger 0:b86d15c6ba29 89 #else
Vanger 0:b86d15c6ba29 90 /* 6 instructions with rotate instruction, 8 without */
Vanger 0:b86d15c6ba29 91 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
Vanger 0:b86d15c6ba29 92 return rotlFixed(value, 16U);
Vanger 0:b86d15c6ba29 93 #endif
Vanger 0:b86d15c6ba29 94 }
Vanger 0:b86d15c6ba29 95
Vanger 0:b86d15c6ba29 96
Vanger 0:b86d15c6ba29 97 STATIC INLINE void ByteReverseWords(word32* out, const word32* in,
Vanger 0:b86d15c6ba29 98 word32 byteCount)
Vanger 0:b86d15c6ba29 99 {
Vanger 0:b86d15c6ba29 100 word32 count = byteCount/(word32)sizeof(word32), i;
Vanger 0:b86d15c6ba29 101
Vanger 0:b86d15c6ba29 102 for (i = 0; i < count; i++)
Vanger 0:b86d15c6ba29 103 out[i] = ByteReverseWord32(in[i]);
Vanger 0:b86d15c6ba29 104
Vanger 0:b86d15c6ba29 105 }
Vanger 0:b86d15c6ba29 106
Vanger 0:b86d15c6ba29 107
Vanger 0:b86d15c6ba29 108 #ifdef WORD64_AVAILABLE
Vanger 0:b86d15c6ba29 109
Vanger 0:b86d15c6ba29 110
Vanger 0:b86d15c6ba29 111 STATIC INLINE word64 rotlFixed64(word64 x, word64 y)
Vanger 0:b86d15c6ba29 112 {
Vanger 0:b86d15c6ba29 113 return (x << y) | (x >> (sizeof(y) * 8 - y));
Vanger 0:b86d15c6ba29 114 }
Vanger 0:b86d15c6ba29 115
Vanger 0:b86d15c6ba29 116
Vanger 0:b86d15c6ba29 117 STATIC INLINE word64 rotrFixed64(word64 x, word64 y)
Vanger 0:b86d15c6ba29 118 {
Vanger 0:b86d15c6ba29 119 return (x >> y) | (x << (sizeof(y) * 8 - y));
Vanger 0:b86d15c6ba29 120 }
Vanger 0:b86d15c6ba29 121
Vanger 0:b86d15c6ba29 122
Vanger 0:b86d15c6ba29 123 STATIC INLINE word64 ByteReverseWord64(word64 value)
Vanger 0:b86d15c6ba29 124 {
Vanger 0:b86d15c6ba29 125 #ifdef CTAOCRYPT_SLOW_WORD64
Vanger 0:b86d15c6ba29 126 return (word64)(ByteReverseWord32((word32)value)) << 32 |
Vanger 0:b86d15c6ba29 127 ByteReverseWord32((word32)(value>>32));
Vanger 0:b86d15c6ba29 128 #else
Vanger 0:b86d15c6ba29 129 value = ((value & W64LIT(0xFF00FF00FF00FF00)) >> 8) |
Vanger 0:b86d15c6ba29 130 ((value & W64LIT(0x00FF00FF00FF00FF)) << 8);
Vanger 0:b86d15c6ba29 131 value = ((value & W64LIT(0xFFFF0000FFFF0000)) >> 16) |
Vanger 0:b86d15c6ba29 132 ((value & W64LIT(0x0000FFFF0000FFFF)) << 16);
Vanger 0:b86d15c6ba29 133 return rotlFixed64(value, 32U);
Vanger 0:b86d15c6ba29 134 #endif
Vanger 0:b86d15c6ba29 135 }
Vanger 0:b86d15c6ba29 136
Vanger 0:b86d15c6ba29 137
Vanger 0:b86d15c6ba29 138 STATIC INLINE void ByteReverseWords64(word64* out, const word64* in,
Vanger 0:b86d15c6ba29 139 word32 byteCount)
Vanger 0:b86d15c6ba29 140 {
Vanger 0:b86d15c6ba29 141 word32 count = byteCount/(word32)sizeof(word64), i;
Vanger 0:b86d15c6ba29 142
Vanger 0:b86d15c6ba29 143 for (i = 0; i < count; i++)
Vanger 0:b86d15c6ba29 144 out[i] = ByteReverseWord64(in[i]);
Vanger 0:b86d15c6ba29 145
Vanger 0:b86d15c6ba29 146 }
Vanger 0:b86d15c6ba29 147
Vanger 0:b86d15c6ba29 148 #endif /* WORD64_AVAILABLE */
Vanger 0:b86d15c6ba29 149
Vanger 0:b86d15c6ba29 150
Vanger 0:b86d15c6ba29 151 STATIC INLINE void XorWords(cyassl_word* r, const cyassl_word* a, word32 n)
Vanger 0:b86d15c6ba29 152 {
Vanger 0:b86d15c6ba29 153 word32 i;
Vanger 0:b86d15c6ba29 154
Vanger 0:b86d15c6ba29 155 for (i = 0; i < n; i++) r[i] ^= a[i];
Vanger 0:b86d15c6ba29 156 }
Vanger 0:b86d15c6ba29 157
Vanger 0:b86d15c6ba29 158
Vanger 0:b86d15c6ba29 159 STATIC INLINE void xorbuf(void* buf, const void* mask, word32 count)
Vanger 0:b86d15c6ba29 160 {
Vanger 0:b86d15c6ba29 161 if (((cyassl_word)buf | (cyassl_word)mask | count) % CYASSL_WORD_SIZE == 0)
Vanger 0:b86d15c6ba29 162 XorWords( (cyassl_word*)buf,
Vanger 0:b86d15c6ba29 163 (const cyassl_word*)mask, count / CYASSL_WORD_SIZE);
Vanger 0:b86d15c6ba29 164 else {
Vanger 0:b86d15c6ba29 165 word32 i;
Vanger 0:b86d15c6ba29 166 byte* b = (byte*)buf;
Vanger 0:b86d15c6ba29 167 const byte* m = (const byte*)mask;
Vanger 0:b86d15c6ba29 168
Vanger 0:b86d15c6ba29 169 for (i = 0; i < count; i++) b[i] ^= m[i];
Vanger 0:b86d15c6ba29 170 }
Vanger 0:b86d15c6ba29 171 }
Vanger 0:b86d15c6ba29 172 #undef STATIC
Vanger 0:b86d15c6ba29 173