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#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include "core.h"
#include "util.h"
#define FN_LEN 256
static char fn_key[FN_LEN];
static char fn_node[FN_LEN];
static int v_rng(void *buf, size_t bufsize) {
int fd;
if((fd = open("/dev/urandom", O_RDONLY)) < 0) return -1;
size_t nb = read(fd, buf, bufsize);
close(fd);
if (nb != bufsize) return -1;
return 0;
}
static void usage(char *arg) {
fprintf(stderr, "Usage: %s <name> [address]\n", arg);
exit(1);
}
int main(int argc, char *argv[]) {
int rv;
ECPContext ctx;
ECPDHKey key;
ECPNode node;
if ((argc < 2) || (argc > 3)) usage(argv[0]);
if (strlen(argv[1]) > FN_LEN - 6) usage(argv[0]);
strcpy(fn_node, argv[1]);
strcpy(fn_key, argv[1]);
strcat(fn_key, ".priv");
strcat(fn_node, ".pub");
rv = ecp_ctx_init(&ctx);
if (rv) goto err;
ctx.rng = v_rng;
rv = ecp_dhkey_gen(&ctx, &key);
if (rv) goto err;
rv = ecp_node_init(&node, &key.public, (argc == 3) ? argv[2] : NULL);
if (rv) goto err;
rv = ecp_util_key_save(&ctx, &key, fn_key);
if (rv) goto err;
rv = ecp_util_node_save(&ctx, &node, fn_node);
if (rv) goto err;
return 0;
err:
printf("ERR:%d\n", rv);
return 1;
}
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