fe_448.h

00001 /* fe448_448.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 #ifndef WOLF_CRYPT_FE_448_H
00024 #define WOLF_CRYPT_FE_448_H
00025 
00026 #include <wolfssl/wolfcrypt/settings.h>
00027 
00028 #if defined(HAVE_CURVE448) || defined(HAVE_ED448)
00029 
00030 #include <stdint.h>
00031 
00032 #include <wolfssl/wolfcrypt/types.h >
00033 
00034 #if defined(HAVE___UINT128_T) && !defined(NO_CURVED448_128BIT)
00035     #define CURVED448_128BIT
00036 #endif
00037 
00038 #ifdef __cplusplus
00039     extern "C" {
00040 #endif
00041 
00042 /* default to be faster but take more memory */
00043 #if !defined(CURVE448_SMALL) || !defined(ED448_SMALL)
00044 
00045 #if defined(CURVED448_128BIT)
00046     typedef int64_t fe448;
00047     #ifdef __SIZEOF_INT128__
00048         typedef __uint128_t uint128_t;
00049         typedef __int128_t int128_t;
00050     #else
00051         typedef unsigned long uint128_t __attribute__ ((mode(TI)));
00052         typedef long int128_t __attribute__ ((mode(TI)));
00053     #endif
00054 #else
00055     typedef int32_t fe448;
00056 #endif
00057 
00058 WOLFSSL_LOCAL void fe448_init(void);
00059 WOLFSSL_LOCAL int  curve448(byte* r, const byte* n, const byte* a);
00060 
00061 #if !defined(CURVED448_128BIT)
00062 WOLFSSL_LOCAL void fe448_reduce(fe448*);
00063 #else
00064 #define fe448_reduce(a)
00065 #endif
00066 WOLFSSL_LOCAL void fe448_neg(fe448*,const fe448*);
00067 WOLFSSL_LOCAL void fe448_add(fe448*, const fe448*, const fe448*);
00068 WOLFSSL_LOCAL void fe448_sub(fe448*, const fe448*, const fe448*);
00069 WOLFSSL_LOCAL void fe448_mul(fe448*,const fe448*,const fe448*);
00070 WOLFSSL_LOCAL void fe448_sqr(fe448*, const fe448*);
00071 WOLFSSL_LOCAL void fe448_mul39081(fe448*, const fe448*);
00072 WOLFSSL_LOCAL void fe448_invert(fe448*, const fe448*);
00073 
00074 WOLFSSL_LOCAL void fe448_0(fe448*);
00075 WOLFSSL_LOCAL void fe448_1(fe448*);
00076 WOLFSSL_LOCAL void fe448_copy(fe448*, const fe448*);
00077 WOLFSSL_LOCAL int  fe448_isnonzero(const fe448*);
00078 WOLFSSL_LOCAL int  fe448_isnegative(const fe448*);
00079 
00080 WOLFSSL_LOCAL void fe448_from_bytes(fe448*,const unsigned char *);
00081 WOLFSSL_LOCAL void fe448_to_bytes(unsigned char *, const fe448*);
00082 
00083 WOLFSSL_LOCAL void fe448_cmov(fe448*,const fe448*, int);
00084 WOLFSSL_LOCAL void fe448_pow_2_446_222_1(fe448*,const fe448*);
00085 
00086 #else
00087 
00088 WOLFSSL_LOCAL void fe448_init(void);
00089 WOLFSSL_LOCAL int  curve448(byte* r, const byte* n, const byte* a);
00090 
00091 #define fe448_reduce(a)
00092 WOLFSSL_LOCAL void fe448_neg(uint8_t*,const uint8_t*);
00093 WOLFSSL_LOCAL void fe448_add(uint8_t*, const uint8_t*, const uint8_t*);
00094 WOLFSSL_LOCAL void fe448_sub(uint8_t*, const uint8_t*, const uint8_t*);
00095 WOLFSSL_LOCAL void fe448_mul(uint8_t*,const uint8_t*,const uint8_t*);
00096 WOLFSSL_LOCAL void fe448_sqr(uint8_t*, const uint8_t*);
00097 WOLFSSL_LOCAL void fe448_mul39081(uint8_t*, const uint8_t*);
00098 WOLFSSL_LOCAL void fe448_invert(uint8_t*, const uint8_t*);
00099 
00100 WOLFSSL_LOCAL void fe448_copy(uint8_t*, const uint8_t*);
00101 WOLFSSL_LOCAL int  fe448_isnonzero(const uint8_t*);
00102 
00103 WOLFSSL_LOCAL void fe448_norm(byte *a);
00104 
00105 WOLFSSL_LOCAL void fe448_cmov(uint8_t*,const uint8_t*, int);
00106 WOLFSSL_LOCAL void fe448_pow_2_446_222_1(uint8_t*,const uint8_t*);
00107 
00108 #endif /* !CURVE448_SMALL || !ED448_SMALL */
00109 
00110 #ifdef __cplusplus
00111     } /* extern "C" */
00112 #endif
00113 
00114 #endif /* HAVE_CURVE448 || HAVE_ED448 */
00115 
00116 #endif /* WOLF_CRYPT_FE_448_H */
00117