libsodium/demos/hash.c

50 lines
1.0 KiB
C

/*
* GraxRabble
* 05 May 2014
* Demo programs for libsodium.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sodium.h> /* library header */
#include "demo_utils.h" /* utility functions shared by demos */
/*
* The library ships with a one-shot SHA-512 implementation. Simply allocate
* all desired data into a single continuous buffer.
*/
static void
hash(void)
{
unsigned char h[crypto_hash_BYTES]; /* hash output */
unsigned char m[BUFFER_SIZE]; /* message */
size_t mlen; /* length */
puts("Example: crypto_hash\n");
mlen = prompt_input("Input your message > ", (char*) m, sizeof m);
putchar('\n');
printf("Hashing message with %s\n", crypto_hash_primitive());
crypto_hash(h, m, mlen);
fputs("Hash: ", stdout);
print_hex(h, sizeof h);
putchar('\n');
putchar('\n');
}
int
main(int argc, char **argv)
{
sodium_init();
printf("Using LibSodium %s\n", sodium_version_string());
hash();
exit(EXIT_SUCCESS);
}