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wireguard-tools/src/curve25519.h

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global: put SPDX identifier on its own line The kernel has very specific rules correlating file type with comment type, and also SPDX identifiers can't be merged with other comments. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-09-20 01:49:47 +02:00
/* SPDX-License-Identifier: GPL-2.0 */
/*
global: year bump Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-01-03 21:58:00 +01:00
* Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
global: add SPDX tags to all files It's good to have SPDX identifiers in all files as the Linux kernel developers are working to add these identifiers to all files. Update all files with the correct SPDX license identifier based on the license text of the project or based on the license in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Modified-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-11-30 16:23:50 +01:00
*/
Initial commit Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2015-06-05 15:58:00 +02:00
#ifndef CURVE25519_H
#define CURVE25519_H
#include <stdint.h>
#include <sys/types.h>
enum curve25519_lengths {
CURVE25519_POINT_SIZE = 32,
};
c: specify static array size in function params The C standard states: A declaration of a parameter as ``array of type'' shall be adjusted to ``qualified pointer to type'', where the type qualifiers (if any) are those specified within the [ and ] of the array type derivation. If the keyword static also appears within the [ and ] of the array type derivation, then for each call to the function, the value of the corresponding actual argument shall provide access to the first element of an array with at least as many elements as specified by the size expression. By changing void func(int array[4]) to void func(int array[static 4]), we automatically get the compiler checking argument sizes for us, which is quite nice. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2016-07-27 11:30:05 +02:00
void curve25519(uint8_t mypublic[static CURVE25519_POINT_SIZE], const uint8_t secret[static CURVE25519_POINT_SIZE], const uint8_t basepoint[static CURVE25519_POINT_SIZE]);
void curve25519_generate_public(uint8_t pub[static CURVE25519_POINT_SIZE], const uint8_t secret[static CURVE25519_POINT_SIZE]);
static inline void curve25519_normalize_secret(uint8_t secret[static CURVE25519_POINT_SIZE])
Initial commit Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2015-06-05 15:58:00 +02:00
{
secret[0] &= 248;
secret[31] &= 127;
secret[31] |= 64;
}
#endif