| 1 |
|
| 2 |
|
| 3 |
|
| 4 | #ifndef _CRYTO_ECC_CURVE_H
|
| 5 | #define _CRYTO_ECC_CURVE_H
|
| 6 |
|
| 7 | #include <linux/types.h>
|
| 8 |
|
| 9 | |
| 10 | * struct ecc_point - elliptic curve point in affine coordinates
|
| 11 | *
|
| 12 | * @x: X coordinate in vli form.
|
| 13 | * @y: Y coordinate in vli form.
|
| 14 | * @ndigits: Length of vlis in u64 qwords.
|
| 15 |
|
| 16 | struct ecc_point {
|
| 17 | u64 *x;
|
| 18 | u64 *y;
|
| 19 | u8 ndigits;
|
| 20 | };
|
| 21 |
|
| 22 | |
| 23 | * struct ecc_curve - definition of elliptic curve
|
| 24 | *
|
| 25 | * @name: Short name of the curve.
|
| 26 | * @nbits: The number of bits of a curve.
|
| 27 | * @g: Generator point of the curve.
|
| 28 | * @p: Prime number, if Barrett's reduction is used for this curve
|
| 29 | * pre-calculated value 'mu' is appended to the @p after ndigits.
|
| 30 | * Use of Barrett's reduction is heuristically determined in
|
| 31 | * vli_mmod_fast().
|
| 32 | * @n: Order of the curve group.
|
| 33 | * @a: Curve parameter a.
|
| 34 | * @b: Curve parameter b.
|
| 35 |
|
| 36 | struct ecc_curve {
|
| 37 | char *name;
|
| 38 | u32 nbits;
|
| 39 | struct ecc_point g;
|
| 40 | u64 *p;
|
| 41 | u64 *n;
|
| 42 | u64 *a;
|
| 43 | u64 *b;
|
| 44 | };
|
| 45 |
|
| 46 | |
| 47 | * ecc_get_curve() - get elliptic curve;
|
| 48 | * @curve_id: Curves IDs:
|
| 49 | * defined in 'include/crypto/ecdh.h';
|
| 50 | *
|
| 51 | * Returns curve if get curve succssful, NULL otherwise
|
| 52 |
|
| 53 | const struct ecc_curve *ecc_get_curve(unsigned int curve_id);
|
| 54 |
|
| 55 | |
| 56 | * ecc_get_curve25519() - get curve25519 curve;
|
| 57 | *
|
| 58 | * Returns curve25519
|
| 59 |
|
| 60 | const struct ecc_curve *ecc_get_curve25519(void);
|
| 61 |
|
| 62 | #endif
|