33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
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/* ---- GF(2^w) polynomial basis ---- */
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#ifdef GF
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#define LSIZE 32 /* handle upto 1024-bit GF numbers */
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typedef unsigned long gf_int[LSIZE];
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typedef unsigned long *gf_intp;
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extern void gf_copy(gf_intp a, gf_intp b);
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extern void gf_zero(gf_intp a);
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extern int gf_iszero(gf_intp a);
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extern int gf_isone(gf_intp a);
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extern int gf_deg(gf_intp a);
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extern void gf_shl(gf_intp a, gf_intp b);
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extern void gf_shr(gf_intp a, gf_intp b);
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extern void gf_add(gf_intp a, gf_intp b, gf_intp c);
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extern void gf_mul(gf_intp a, gf_intp b, gf_intp c);
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extern void gf_div(gf_intp a, gf_intp b, gf_intp q, gf_intp r);
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extern void gf_mod(gf_intp a, gf_intp m, gf_intp b);
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extern void gf_mulmod(gf_intp a, gf_intp b, gf_intp m, gf_intp c);
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extern void gf_invmod(gf_intp A, gf_intp M, gf_intp B);
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extern void gf_sqrt(gf_intp a, gf_intp M, gf_intp b);
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extern void gf_gcd(gf_intp A, gf_intp B, gf_intp c);
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extern int gf_is_prime(gf_intp a);
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extern int gf_size(gf_intp a);
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extern void gf_toraw(gf_intp a, unsigned char *dst);
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extern void gf_readraw(gf_intp a, unsigned char *str, int len);
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#endif
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