190 lines
5.8 KiB
C
190 lines
5.8 KiB
C
/* misc.h
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*
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* Copyright (C) 2006-2023 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL 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; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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/*
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DESCRIPTION
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This module implements the arithmetic-shift right, left, byte swapping, XOR,
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masking and clearing memory logic.
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*/
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#ifndef WOLF_CRYPT_MISC_H
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#define WOLF_CRYPT_MISC_H
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#include <wolfssl/wolfcrypt/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef NO_INLINE
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#define WC_MISC_STATIC
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WOLFSSL_LOCAL
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word32 rotlFixed(word32 x, word32 y);
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WOLFSSL_LOCAL
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word32 rotrFixed(word32 x, word32 y);
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#ifdef WC_RC2
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WOLFSSL_LOCAL
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word16 rotlFixed16(word16 x, word16 y);
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WOLFSSL_LOCAL
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word16 rotrFixed16(word16 x, word16 y);
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#endif
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WOLFSSL_LOCAL
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word32 ByteReverseWord32(word32 value);
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WOLFSSL_LOCAL
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void ByteReverseWords(word32* out, const word32* in, word32 byteCount);
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WOLFSSL_LOCAL
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void XorWordsOut(wolfssl_word** r, const wolfssl_word** a,
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const wolfssl_word** b, word32 n);
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WOLFSSL_LOCAL
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void xorbufout(void* out, const void* buf, const void* mask, word32 count);
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WOLFSSL_LOCAL
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void XorWords(wolfssl_word** r, const wolfssl_word** a, word32 n);
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WOLFSSL_LOCAL
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void xorbuf(void* buf, const void* mask, word32 count);
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WOLFSSL_LOCAL
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void ForceZero(void* mem, word32 len);
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WOLFSSL_LOCAL
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int ConstantCompare(const byte* a, const byte* b, int length);
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#ifdef WORD64_AVAILABLE
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WOLFSSL_LOCAL
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word64 rotlFixed64(word64 x, word64 y);
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WOLFSSL_LOCAL
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word64 rotrFixed64(word64 x, word64 y);
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WOLFSSL_LOCAL
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word64 ByteReverseWord64(word64 value);
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WOLFSSL_LOCAL
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void ByteReverseWords64(word64* out, const word64* in, word32 byteCount);
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#endif /* WORD64_AVAILABLE */
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#ifndef WOLFSSL_HAVE_MIN
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#if defined(HAVE_FIPS) && !defined(min) /* so ifdef check passes */
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#define min min
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#endif
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WOLFSSL_LOCAL word32 min(word32 a, word32 b);
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#endif
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#ifndef WOLFSSL_HAVE_MAX
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#if defined(HAVE_FIPS) && !defined(max) /* so ifdef check passes */
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#define max max
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#endif
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WOLFSSL_LOCAL word32 max(word32 a, word32 b);
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#endif /* WOLFSSL_HAVE_MAX */
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void c32to24(word32 in, word24 out);
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void c16toa(word16 wc_u16, byte* c);
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void c32toa(word32 wc_u32, byte* c);
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void c24to32(const word24 wc_u24, word32* wc_u32);
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void ato16(const byte* c, word16* wc_u16);
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void ato24(const byte* c, word32* wc_u24);
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void ato32(const byte* c, word32* wc_u32);
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void ato32le(const byte* c, word32* wc_u32);
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word32 btoi(byte b);
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WOLFSSL_LOCAL signed char HexCharToByte(char ch);
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WOLFSSL_LOCAL char ByteToHex(byte in);
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WOLFSSL_LOCAL int ByteToHexStr(byte in, char* out);
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WOLFSSL_LOCAL byte ctMaskGT(int a, int b);
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WOLFSSL_LOCAL byte ctMaskGTE(int a, int b);
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WOLFSSL_LOCAL int ctMaskIntGTE(int a, int b);
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WOLFSSL_LOCAL byte ctMaskLT(int a, int b);
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WOLFSSL_LOCAL byte ctMaskLTE(int a, int b);
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WOLFSSL_LOCAL byte ctMaskEq(int a, int b);
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WOLFSSL_LOCAL word16 ctMask16GT(int a, int b);
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WOLFSSL_LOCAL word16 ctMask16GTE(int a, int b);
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WOLFSSL_LOCAL word16 ctMask16LT(int a, int b);
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WOLFSSL_LOCAL word16 ctMask16LTE(int a, int b);
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WOLFSSL_LOCAL word16 ctMask16Eq(int a, int b);
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WOLFSSL_LOCAL byte ctMaskNotEq(int a, int b);
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WOLFSSL_LOCAL byte ctMaskSel(byte m, byte a, byte b);
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WOLFSSL_LOCAL int ctMaskSelInt(byte m, int a, int b);
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WOLFSSL_LOCAL word32 ctMaskSelWord32(byte m, word32 a, word32 b);
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WOLFSSL_LOCAL byte ctSetLTE(int a, int b);
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WOLFSSL_LOCAL void ctMaskCopy(byte mask, byte* dst, byte* src, word16 size);
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WOLFSSL_LOCAL word32 MakeWordFromHash(const byte* hashID);
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WOLFSSL_LOCAL word32 HashObject(const byte* o, word32 len, int* error);
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WOLFSSL_LOCAL void w64Increment(w64wrapper *n);
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WOLFSSL_LOCAL void w64Decrement(w64wrapper *n);
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WOLFSSL_LOCAL byte w64Equal(w64wrapper a, w64wrapper b);
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WOLFSSL_LOCAL word32 w64GetLow32(w64wrapper n);
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WOLFSSL_LOCAL word32 w64GetHigh32(w64wrapper n);
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WOLFSSL_LOCAL void w64SetLow32(w64wrapper *n, word32 low);
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WOLFSSL_LOCAL w64wrapper w64Add32(w64wrapper a, word32 b, byte *wrap);
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WOLFSSL_LOCAL w64wrapper w64Sub32(w64wrapper a, word32 b, byte *wrap);
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WOLFSSL_LOCAL byte w64GT(w64wrapper a, w64wrapper b);
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WOLFSSL_LOCAL byte w64IsZero(w64wrapper a);
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WOLFSSL_LOCAL void c64toa(const w64wrapper *a, byte *out);
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WOLFSSL_LOCAL void ato64(const byte *in, w64wrapper *w64);
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WOLFSSL_LOCAL w64wrapper w64From32(word32 hi, word32 lo);
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WOLFSSL_LOCAL byte w64GTE(w64wrapper a, w64wrapper b);
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WOLFSSL_LOCAL byte w64LT(w64wrapper a, w64wrapper b);
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WOLFSSL_LOCAL w64wrapper w64Sub(w64wrapper a, w64wrapper b);
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WOLFSSL_LOCAL void w64Zero(w64wrapper *a);
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#else /* !NO_INLINE */
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#define WC_MISC_STATIC static
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/* Declarations for user defined functions */
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#ifdef WOLFSSL_NO_FORCE_ZERO
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void ForceZero(void* mem, word32 len);
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#endif
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#ifdef WOLFSSL_NO_CONST_CMP
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int ConstantCompare(const byte* a, const byte* b, int length);
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#endif
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#ifdef WOLFSSL_NO_INT_ENCODE
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void c32to24(word32 in, word24 out);
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void c16toa(word16 wc_u16, byte* c);
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void c32toa(word32 wc_u32, byte* c);
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#endif
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#ifdef WOLFSSL_NO_INT_DECODE
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void c24to32(const word24 wc_u24, word32* wc_u32);
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void ato24(const byte* c, word32* wc_u24);
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void ato16(const byte* c, word16* wc_u16);
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void ato32(const byte* c, word32* wc_u32);
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void ato32le(const byte* c, word32* wc_u32);
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word32 btoi(byte b);
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#endif
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#endif /* NO_INLINE */
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* WOLF_CRYPT_MISC_H */
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