54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/*
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* GraxRabble
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* Demo programs for libsodium.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sodium.h> /* library header */
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#include "demo_utils.h" /* utility functions shared by demos */
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/*
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* Generic hash is intended as a variable output hash with enough strength
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* to ensure data integrity. The hash out put is also able to vary in size.
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* Key is optional and is able to vary in size.
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*
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* Note that it is recommended to stay within the range of MIN and MAX
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* output because larger output will produce gaps.
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*/
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void
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generichash(void)
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{
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unsigned char k[crypto_generichash_KEYBYTES_MAX]; /* key */
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unsigned char h[crypto_generichash_BYTES_MIN]; /* hash output */
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unsigned char m[MAX_INPUT_SIZE]; /* message */
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size_t mlen; /* length */
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puts("Example: crypto_generichash\n");
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sodium_memzero(k, sizeof k);
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prompt_input("Input your key > ", (char*)k, sizeof k);
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mlen = prompt_input("Input your message > ", (char*)m, sizeof m);
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putchar('\n');
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printf("Hashing message with %s\n", crypto_generichash_primitive());
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crypto_generichash(h, sizeof h, m, mlen, k, sizeof k);
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fputs("Hash: ", stdout);
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print_hex(h, sizeof h);
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putchar('\n');
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putchar('\n');
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}
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int
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main(void)
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{
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sodium_init();
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printf("Using LibSodium %s\n", sodium_version_string());
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generichash();
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return 0;
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}
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