/* -*-c-*-
*
- * $Id: f-binpoly.c,v 1.3 2004/03/23 12:08:26 mdw Exp $
+ * $Id: f-binpoly.c,v 1.5 2004/03/27 17:54:11 mdw Exp $
*
* Binary fields with polynomial basis representation
*
/*----- Revision history --------------------------------------------------*
*
* $Log: f-binpoly.c,v $
+ * Revision 1.5 2004/03/27 17:54:11 mdw
+ * Standard curves and curve checking.
+ *
+ * Revision 1.4 2004/03/23 15:19:32 mdw
+ * Test elliptic curves more thoroughly.
+ *
* Revision 1.3 2004/03/23 12:08:26 mdw
* Random field-element selection.
*
DESTROY(f);
}
-static mp *frand(field *ff, grand *r, mp *d)
+static mp *frand(field *f, mp *d, grand *r)
{
- fctx *f = (fctx *)ff;
- return (mprand(d, mp_octets(f->r.p) - 1, r, 0));
+ return (mprand(d, f->nbits, r, 0));
}
static int fzerop(field *ff, mp *x)
/* --- Field operations table --- */
static field_ops fops = {
+ FTY_BINARY, "binpoly",
fdestroy, frand,
freduce, field_id,
fzerop, field_id, fadd, fadd, fmul, fsqr, finv, freduce, fsqrt,
f->f.ops = &fops;
f->f.zero = MP_ZERO;
f->f.one = MP_ONE;
+ f->f.nbits = mp_bits(p) - 1;
+ f->f.noctets = (f->f.nbits + 7) >> 3;
gfreduce_create(&f->r, p);
+ f->f.m = f->r.p;
return (&f->f);
}