diff options
Diffstat (limited to 'src/crypto/include/zinc/curve25519.h')
| -rw-r--r-- | src/crypto/include/zinc/curve25519.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/crypto/include/zinc/curve25519.h b/src/crypto/include/zinc/curve25519.h new file mode 100644 index 0000000..127d8a3 --- /dev/null +++ b/src/crypto/include/zinc/curve25519.h @@ -0,0 +1,28 @@ +/* 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 */ |