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author | 2015-11-23 17:48:48 +0100 | |
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committer | 2015-11-23 17:48:48 +0100 | |
commit | fca74d4bc3569506a6659880a89aa009dc11f552 (patch) | |
tree | 4cefd06af989608ea8ebd3bc6306889e2a1ad175 /moon-abe/pbc-0.5.14/include/pbc_curve.h | |
parent | 840ac3ebca7af381132bf7e93c1e4c0430d6b16a (diff) |
moon-abe cleanup
Change-Id: Ie1259856db03f0b9e80de3e967ec6bd1f03191b3
Diffstat (limited to 'moon-abe/pbc-0.5.14/include/pbc_curve.h')
-rw-r--r-- | moon-abe/pbc-0.5.14/include/pbc_curve.h | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/moon-abe/pbc-0.5.14/include/pbc_curve.h b/moon-abe/pbc-0.5.14/include/pbc_curve.h deleted file mode 100644 index 9a86903d..00000000 --- a/moon-abe/pbc-0.5.14/include/pbc_curve.h +++ /dev/null @@ -1,79 +0,0 @@ -// A subgroup of the group of points on an elliptic curve. -// Also used to represent quotient groups. -// -// We use the field_t structure even though E(K) is a group. Addition and -// multiplication both refer to the group operation. - -// Requires: -// * stdio.h -// * gmp.h -// * field.h -#ifndef __PBC_CURVE_H__ -#define __PBC_CURVE_H__ - -// Some initialization functions take an order parameter. This is meant to -// be the order of the subgroup, but might actually be the order of the twist. -// Certain routines initialize a curve, test a random point to see if it has -// the correct order, and if not, immediately twist the curve so that it does. -// TODO: Move such code into curve.c, so 'order' is always accurate. - -// If cofac != NULL, then the field_t represents the subgroup of -// order = #E(K) / cofac. -// -// If not, and order = #E(K) then the field_t represents the entire E(K). -// -// Otherwise, if order is a factor of #E(K), then the field_t represents -// the quotient group of that order, namely E(K)/(#E(K)/order). No attempt is -// made to standardize the coset representative. This mode is useful for the -// Tate pairing (see thesis), where any coset representative of G2 suffices -// during the pairing computation. - -// Initialize a subgroup of points on the curve Y^2 = X^3 + b. -void field_init_curve_b(field_ptr f, element_ptr b, mpz_t order, mpz_t cofac); - -// Initialize a subgroup of points on the curve with the given j-invariant. -void field_init_curve_j(field_t f, element_ptr j, mpz_t order, mpz_t cofac); - -// Initialize a subgroup of points on the curve Y^2 = X^3 + a X + b. -void field_init_curve_ab(field_ptr f, element_ptr a, element_ptr b, mpz_t order, mpz_t cofac); - -// Reinitialize as the subgroup of points on the twist curve. -// Requires j-invariant of the original curve != 0, 1728. -// Mangles f, thus existing points of f become invalid. -// TODO: Refactor so we can remove this from the interface. -void field_reinit_curve_twist(field_t f); - -// Compute trace of Frobenius at q^n given trace at q. -void pbc_mpz_trace_n(mpz_t res, mpz_t q, mpz_t trace, int n); - -// Given q, t such that #E(F_q) = q - t + 1, compute #E(F_q^k). -void pbc_mpz_curve_order_extn(mpz_t res, mpz_t q, mpz_t t, int k); - -void field_init_curve_with_map(field_ptr cnew, field_ptr c, - field_ptr dstfield, fieldmap map); - -void field_init_curve_ab_map(field_t cnew, field_t c, - fieldmap map, field_ptr mapdest, - mpz_t ordernew, mpz_t cofacnew); - -void field_curve_use_random_solvefory(field_ptr f); - -void field_curve_set_quotient_cmp(field_ptr c, mpz_t quotient_cmp); - -#pragma GCC visibility push(hidden) -// Internal: - -element_ptr curve_x_coord(element_t e); -element_ptr curve_y_coord(element_t e); -element_ptr curve_a_coeff(element_t e); -element_ptr curve_b_coeff(element_t e); -element_ptr curve_field_a_coeff(field_t f); -element_ptr curve_field_b_coeff(field_t f); - -void curve_from_x(element_ptr e, element_t x); -void curve_set_si(element_t R, long int x, long int y); -void curve_set_gen_no_cofac(element_ptr a); - -#pragma GCC visibility pop - -#endif //__PBC_CURVE_H__ |