29 lines
819 B
C
29 lines
819 B
C
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#ifndef TEDWARDS_H
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#define TEDWARDS_H
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#include <fp2.h>
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#include "ec.h"
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// a*x^2+y^2=1+d*x^2*y^2
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typedef struct ted_point_t {
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fp2_t x;
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fp2_t y;
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fp2_t z;
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fp2_t t; // t = x*y/z
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} ted_point_t;
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void ted_init(ted_point_t* P);
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bool is_ted_equal(ted_point_t const* P1, ted_point_t const* P2);
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void copy_ted_point(ted_point_t* P, ted_point_t const* Q);
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void ted_neg(ted_point_t* Q, ted_point_t const* P);
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void ted_dbl(ted_point_t* Q, ted_point_t const* P, ec_curve_t const* E);
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void ted_add(ted_point_t* S, ted_point_t const* P, ted_point_t const* Q, ec_curve_t const* E);
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void mont_to_ted(ec_curve_t* E, ec_curve_t const* A);
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void mont_to_ted_point(ted_point_t* Q, ec_point_t const* P, ec_curve_t const* A);
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void ted_to_mont_point(ec_point_t* Q, ted_point_t const* P);
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#endif
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