lilliput-ae-reference-implementation

Implementations of Lilliput-AE submitted to the NIST LWC standardization process
git clone https://git.kevinlegouguec.net/lilliput-ae-reference-implementation
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random.c (806B)

      1 /*
      2 Implementation of the Lilliput-AE tweakable block cipher.
      3 
      4 Authors, hereby denoted as "the implementer":
      5     Kévin Le Gouguec,
      6     2019.
      7 
      8 For more information, feedback or questions, refer to our website:
      9 https://paclido.fr/lilliput-ae
     10 
     11 To the extent possible under law, the implementer has waived all copyright
     12 and related or neighboring rights to the source code in this file.
     13 http://creativecommons.org/publicdomain/zero/1.0/
     14 
     15 ---
     16 
     17 This file provides a system-specific function to generate random bytes.
     18 */
     19 
     20 /* glibc < 2.25 does not provide getrandom(2): use the system call. */
     21 
     22 #define _GNU_SOURCE
     23 
     24 #include <stddef.h>
     25 #include <stdint.h>
     26 
     27 #include <unistd.h>
     28 #include <sys/syscall.h>
     29 
     30 #include "random.h"
     31 
     32 
     33 void randombytes(size_t nb, uint8_t out[nb])
     34 {
     35     syscall(SYS_getrandom, out, nb, 0);
     36 }