+static int generate_keypair(char *argv[]) {
+ ecdsa_t *key = ecdsa_generate();
+
+ if(!key) {
+ return 1;
+ }
+
+ FILE *fp = fopen(argv[1], "w");
+
+ if(fp) {
+ if(!ecdsa_write_pem_private_key(key, fp)) {
+ fprintf(stderr, "Could not write ECDSA private key\n");
+ free(key);
+ return 1;
+ }
+
+ fclose(fp);
+ } else {
+ fprintf(stderr, "Could not open '%s' for writing: %s\n", argv[1], strerror(errno));
+ free(key);
+ return 1;
+ }
+
+ fp = fopen(argv[2], "w");
+
+ if(fp) {
+ if(!ecdsa_write_pem_public_key(key, fp)) {
+ fprintf(stderr, "Could not write ECDSA public key\n");
+ }
+
+ free(key);
+ fclose(fp);
+ return 0;
+ } else {
+ fprintf(stderr, "Could not open '%s' for writing: %s\n", argv[2], strerror(errno));
+ free(key);
+ return 1;
+ }
+}
+