mirror of
https://github.com/BLAKE3-team/BLAKE3
synced 2024-04-27 08:35:15 +02:00
38 lines
887 B
C
38 lines
887 B
C
#include "blake3.h"
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#include <errno.h>
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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 <unistd.h>
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int main(void) {
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// Initialize the hasher.
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blake3_hasher hasher;
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blake3_hasher_init(&hasher);
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// Read input bytes from stdin.
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unsigned char buf[65536];
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while (1) {
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ssize_t n = read(STDIN_FILENO, buf, sizeof(buf));
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if (n > 0) {
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blake3_hasher_update(&hasher, buf, n);
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} else if (n == 0) {
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break; // end of file
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} else {
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fprintf(stderr, "read failed: %s\n", strerror(errno));
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exit(1);
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}
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}
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// Finalize the hash. BLAKE3_OUT_LEN is the default output length, 32 bytes.
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uint8_t output[BLAKE3_OUT_LEN];
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blake3_hasher_finalize(&hasher, output, BLAKE3_OUT_LEN);
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// Print the hash as hexadecimal.
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for (size_t i = 0; i < BLAKE3_OUT_LEN; i++) {
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printf("%02x", output[i]);
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}
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printf("\n");
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return 0;
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}
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