123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960 |
- /* SPDX-License-Identifier: GPL-2.0 */
- /* Copyright (c) 2021 HiSilicon */
- #ifndef _CRYTO_ECC_CURVE_H
- #define _CRYTO_ECC_CURVE_H
- #include <linux/types.h>
- /**
- * struct ecc_point - elliptic curve point in affine coordinates
- *
- * @x: X coordinate in vli form.
- * @y: Y coordinate in vli form.
- * @ndigits: Length of vlis in u64 qwords.
- */
- struct ecc_point {
- u64 *x;
- u64 *y;
- u8 ndigits;
- };
- /**
- * struct ecc_curve - definition of elliptic curve
- *
- * @name: Short name of the curve.
- * @g: Generator point of the curve.
- * @p: Prime number, if Barrett's reduction is used for this curve
- * pre-calculated value 'mu' is appended to the @p after ndigits.
- * Use of Barrett's reduction is heuristically determined in
- * vli_mmod_fast().
- * @n: Order of the curve group.
- * @a: Curve parameter a.
- * @b: Curve parameter b.
- */
- struct ecc_curve {
- char *name;
- struct ecc_point g;
- u64 *p;
- u64 *n;
- u64 *a;
- u64 *b;
- };
- /**
- * ecc_get_curve() - get elliptic curve;
- * @curve_id: Curves IDs:
- * defined in 'include/crypto/ecdh.h';
- *
- * Returns curve if get curve succssful, NULL otherwise
- */
- const struct ecc_curve *ecc_get_curve(unsigned int curve_id);
- /**
- * ecc_get_curve25519() - get curve25519 curve;
- *
- * Returns curve25519
- */
- const struct ecc_curve *ecc_get_curve25519(void);
- #endif
|