| /* SPDX-License-Identifier: GPL-2.0 OR MIT */ |
| /* |
| * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. |
| */ |
| |
| #ifndef _ZINC_CURVE25519_H |
| #define _ZINC_CURVE25519_H |
| |
| #include <linux/types.h> |
| |
| enum curve25519_lengths { |
| CURVE25519_KEY_SIZE = 32 |
| }; |
| |
| bool __must_check curve25519(u8 mypublic[CURVE25519_KEY_SIZE], |
| const u8 secret[CURVE25519_KEY_SIZE], |
| const u8 basepoint[CURVE25519_KEY_SIZE]); |
| void curve25519_generate_secret(u8 secret[CURVE25519_KEY_SIZE]); |
| bool __must_check curve25519_generate_public( |
| u8 pub[CURVE25519_KEY_SIZE], const u8 secret[CURVE25519_KEY_SIZE]); |
| |
| static inline void curve25519_clamp_secret(u8 secret[CURVE25519_KEY_SIZE]) |
| { |
| secret[0] &= 248; |
| secret[31] = (secret[31] & 127) | 64; |
| } |
| |
| #endif /* _ZINC_CURVE25519_H */ |