1b9a83c852
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>
23 lines
695 B
C
23 lines
695 B
C
/* Copyright 2015-2016 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
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#ifndef CURVE25519_H
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#define CURVE25519_H
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#include <stdint.h>
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#include <sys/types.h>
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enum curve25519_lengths {
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CURVE25519_POINT_SIZE = 32,
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};
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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]);
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void curve25519_generate_public(uint8_t pub[static CURVE25519_POINT_SIZE], const uint8_t secret[static CURVE25519_POINT_SIZE]);
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static inline void curve25519_normalize_secret(uint8_t secret[static CURVE25519_POINT_SIZE])
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{
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secret[0] &= 248;
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secret[31] &= 127;
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secret[31] |= 64;
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}
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#endif
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