misc.h

00001 /* misc.h
00002  *
00003  * Copyright (C) 2006-2020 wolfSSL Inc.
00004  *
00005  * This file is part of wolfSSL.
00006  *
00007  * wolfSSL is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2 of the License, or
00010  * (at your option) any later version.
00011  *
00012  * wolfSSL is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
00020  */
00021 
00022 
00023 
00024 #ifndef WOLF_CRYPT_MISC_H
00025 #define WOLF_CRYPT_MISC_H
00026 
00027 
00028 #include <wolfssl/wolfcrypt/types.h >
00029 
00030 
00031 #ifdef __cplusplus
00032     extern "C" {
00033 #endif
00034 
00035 
00036 #ifdef NO_INLINE
00037 WOLFSSL_LOCAL
00038 word32 rotlFixed(word32, word32);
00039 WOLFSSL_LOCAL
00040 word32 rotrFixed(word32, word32);
00041 
00042 WOLFSSL_LOCAL
00043 word32 ByteReverseWord32(word32);
00044 WOLFSSL_LOCAL
00045 void   ByteReverseWords(word32*, const word32*, word32);
00046 
00047 WOLFSSL_LOCAL
00048 void XorWords(wolfssl_word*, const wolfssl_word*, word32);
00049 WOLFSSL_LOCAL
00050 void xorbuf(void*, const void*, word32);
00051 
00052 WOLFSSL_LOCAL
00053 void ForceZero(const void*, word32);
00054 
00055 WOLFSSL_LOCAL
00056 int ConstantCompare(const byte*, const byte*, int);
00057 
00058 #ifdef WORD64_AVAILABLE
00059 WOLFSSL_LOCAL
00060 word64 rotlFixed64(word64, word64);
00061 WOLFSSL_LOCAL
00062 word64 rotrFixed64(word64, word64);
00063 
00064 WOLFSSL_LOCAL
00065 word64 ByteReverseWord64(word64);
00066 WOLFSSL_LOCAL
00067 void   ByteReverseWords64(word64*, const word64*, word32);
00068 #endif /* WORD64_AVAILABLE */
00069 
00070 #ifndef WOLFSSL_HAVE_MIN
00071     #if defined(HAVE_FIPS) && !defined(min) /* so ifdef check passes */
00072         #define min min
00073     #endif
00074     WOLFSSL_LOCAL word32 min(word32 a, word32 b);
00075 #endif
00076 
00077 #ifndef WOLFSSL_HAVE_MAX
00078     #if defined(HAVE_FIPS) && !defined(max) /* so ifdef check passes */
00079         #define max max
00080     #endif
00081     WOLFSSL_LOCAL word32 max(word32 a, word32 b);
00082 #endif /* WOLFSSL_HAVE_MAX */
00083 
00084 
00085 void c32to24(word32 in, word24 out);
00086 void c16toa(word16 u16, byte* c);
00087 void c32toa(word32 u32, byte* c);
00088 void c24to32(const word24 u24, word32* u32);
00089 void ato16(const byte* c, word16* u16);
00090 void ato24(const byte* c, word32* u24);
00091 void ato32(const byte* c, word32* u32);
00092 word32 btoi(byte b);
00093 
00094 
00095 WOLFSSL_LOCAL byte ctMaskGT(int a, int b);
00096 WOLFSSL_LOCAL byte ctMaskGTE(int a, int b);
00097 WOLFSSL_LOCAL int  ctMaskIntGTE(int a, int b);
00098 WOLFSSL_LOCAL byte ctMaskLT(int a, int b);
00099 WOLFSSL_LOCAL byte ctMaskLTE(int a, int b);
00100 WOLFSSL_LOCAL byte ctMaskEq(int a, int b);
00101 WOLFSSL_LOCAL word16 ctMask16GT(int a, int b);
00102 WOLFSSL_LOCAL word16 ctMask16LT(int a, int b);
00103 WOLFSSL_LOCAL word16 ctMask16Eq(int a, int b);
00104 WOLFSSL_LOCAL byte ctMaskNotEq(int a, int b);
00105 WOLFSSL_LOCAL byte ctMaskSel(byte m, byte a, byte b);
00106 WOLFSSL_LOCAL int  ctMaskSelInt(byte m, int a, int b);
00107 WOLFSSL_LOCAL byte ctSetLTE(int a, int b);
00108 
00109 #endif /* NO_INLINE */
00110 
00111 
00112 #ifdef __cplusplus
00113     }   /* extern "C" */
00114 #endif
00115 
00116 
00117 #endif /* WOLF_CRYPT_MISC_H */
00118 
00119