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view mycrypt_gf.h @ 16:09ab3354aa21 libtomcrypt

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propagate of e8bea23df30f9f46c647d06db3b223427b4e3604 and b0b6b4a8843b94d9f049cb5ffe0b1ae91ec1bf8b from branch 'au.asn.ucc.matt.ltc-orig' to 'au.asn.ucc.matt.ltc-db'
author Matt Johnston <matt@ucc.asn.au>
date Tue, 15 Jun 2004 14:27:14 +0000
parents d7da3b1e1540
children
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line source


/* ---- GF(2^w) polynomial basis ---- */
#ifdef GF
#define   LSIZE    32   /* handle upto 1024-bit GF numbers */

typedef unsigned long gf_int[LSIZE];
typedef unsigned long *gf_intp;

extern void gf_copy(gf_intp a, gf_intp b);
extern void gf_zero(gf_intp a);
extern int gf_iszero(gf_intp a);
extern int gf_isone(gf_intp a);
extern int gf_deg(gf_intp a);

extern void gf_shl(gf_intp a, gf_intp b);
extern void gf_shr(gf_intp a, gf_intp b);
extern void gf_add(gf_intp a, gf_intp b, gf_intp c);
extern void gf_mul(gf_intp a, gf_intp b, gf_intp c);
extern void gf_div(gf_intp a, gf_intp b, gf_intp q, gf_intp r);

extern void gf_mod(gf_intp a, gf_intp m, gf_intp b);
extern void gf_mulmod(gf_intp a, gf_intp b, gf_intp m, gf_intp c);
extern void gf_invmod(gf_intp A, gf_intp M, gf_intp B);
extern void gf_sqrt(gf_intp a, gf_intp M, gf_intp b);
extern void gf_gcd(gf_intp A, gf_intp B, gf_intp c);
extern int gf_is_prime(gf_intp a);

extern int gf_size(gf_intp a);
extern void gf_toraw(gf_intp a, unsigned char *dst);
extern void gf_readraw(gf_intp a, unsigned char *str, int len);

#endif