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general/package/wifibroadcast-ext/src/keygen_drone.c

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+// Copyright (C) 2017 - 2024 Vasily Evseenko <svpcom@p2ptech.org>
+
+/*
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; version 3.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License along
+ *   with this program; if not, write to the Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <fcntl.h>
+#include <sodium.h>
+#include <string.h>
+
+int main(int argc, char **argv) {
+	unsigned char publickey[crypto_box_PUBLICKEYBYTES];
+	unsigned char secretkey[crypto_box_SECRETKEYBYTES];
+	FILE *fp;
+
+	if (argc != 2) {
+		printf("Passphrase is missing\n");
+		return 1;
+	}
+
+	if (sodium_init() < 0) {
+		printf("Libsodium init failed\n");
+		return 1;
+	}
+
+	char seed[32];
+	strncpy(seed, argv[1], sizeof(seed));
+	printf("Using passphrase: %s\n", seed);
+
+	if (crypto_box_seed_keypair(publickey, secretkey, seed) != 0) {
+		printf("Unable to generate key\n");
+		return 1;
+	}
+
+	const char *key = "/etc/drone.key";
+	if ((fp = fopen(key, "w")) == NULL) {
+		printf("Unable to save: %s\n", key);
+		return 1;
+	}
+
+	fwrite(secretkey, crypto_box_SECRETKEYBYTES, 1, fp);
+	fwrite(publickey, crypto_box_PUBLICKEYBYTES, 1, fp);
+	fclose(fp);
+
+	printf("Key saved: %s\n", key);
+
+	return 0;
+}