--- /dev/null
+/*
+ * px5g - Embedded x509 key and certificate generator based on PolarSSL
+ *
+ * Copyright (C) 2009 Steven Barth <steven@midlink.org>
+ * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1 as published by the Free Software Foundation.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <limits.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdbool.h>
+
+#include <polarssl/bignum.h>
+#include <polarssl/x509_crt.h>
+#include <polarssl/rsa.h>
+
+#define PX5G_VERSION "0.2"
+#define PX5G_COPY "Copyright (c) 2009 Steven Barth <steven@midlink.org>"
+#define PX5G_LICENSE "Licensed under the GNU Lesser General Public License v2.1"
+
+static int urandom_fd;
+static char buf[16384];
+
+static int _urandom(void *ctx, unsigned char *out, size_t len)
+{
+ read(urandom_fd, out, len);
+ return 0;
+}
+
+static void write_file(const char *path, int len, bool pem)
+{
+ FILE *f = stdout;
+ const char *buf_start = buf;
+
+ if (!pem)
+ buf_start += sizeof(buf) - len;
+
+ if (!len) {
+ fprintf(stderr, "No data to write\n");
+ exit(1);
+ }
+
+ if (!f) {
+ fprintf(stderr, "error: I/O error\n");
+ exit(1);
+ }
+
+ if (path)
+ f = fopen(path, "w");
+
+ fwrite(buf_start, 1, len, f);
+ fclose(f);
+}
+
+static void write_key(pk_context *key, const char *path, bool pem)
+{
+ int len = 0;
+
+ if (pem) {
+ if (pk_write_key_pem(key, (void *) buf, sizeof(buf)) == 0)
+ len = strlen(buf);
+ } else {
+ len = pk_write_key_der(key, (void *) buf, sizeof(buf));
+ if (len < 0)
+ len = 0;
+ }
+
+ write_file(path, len, pem);
+}
+
+static void gen_key(pk_context *key, int ksize, int exp, bool pem)
+{
+ pk_init(key);
+ pk_init_ctx(key, pk_info_from_type(POLARSSL_PK_RSA));
+ fprintf(stderr, "Generating RSA private key, %i bit long modulus\n", ksize);
+ if (rsa_gen_key(pk_rsa(*key), _urandom, NULL, ksize, exp)) {
+ fprintf(stderr, "error: key generation failed\n");
+ exit(1);
+ }
+}
+
+int rsakey(char **arg)
+{
+ pk_context key;
+ unsigned int ksize = 512;
+ int exp = 65537;
+ char *path = NULL;
+ bool pem = true;
+
+ while (*arg && **arg == '-') {
+ if (!strcmp(*arg, "-out") && arg[1]) {
+ path = arg[1];
+ arg++;
+ } else if (!strcmp(*arg, "-3")) {
+ exp = 3;
+ } else if (!strcmp(*arg, "-der")) {
+ pem = false;
+ }
+ arg++;
+ }
+
+ if (*arg)
+ ksize = (unsigned int)atoi(*arg);
+
+ gen_key(&key, ksize, exp, pem);
+ write_key(&key, path, pem);
+
+ pk_free(&key);
+
+ return 0;
+}
+
+int selfsigned(char **arg)
+{
+ pk_context key;
+ x509write_cert cert;
+ mpi serial;
+
+ char *subject = "";
+ unsigned int ksize = 512;
+ int exp = 65537;
+ unsigned int days = 30;
+ char *keypath = NULL, *certpath = NULL;
+ bool pem = true;
+ time_t from = time(NULL), to;
+ char fstr[20], tstr[20];
+ int len;
+
+ while (*arg && **arg == '-') {
+ if (!strcmp(*arg, "-der")) {
+ pem = false;
+ } else if (!strcmp(*arg, "-newkey") && arg[1]) {
+ if (strncmp(arg[1], "rsa:", 4)) {
+ fprintf(stderr, "error: invalid algorithm");
+ return 1;
+ }
+ ksize = (unsigned int)atoi(arg[1] + 4);
+ arg++;
+ } else if (!strcmp(*arg, "-days") && arg[1]) {
+ days = (unsigned int)atoi(arg[1]);
+ arg++;
+ } else if (!strcmp(*arg, "-keyout") && arg[1]) {
+ keypath = arg[1];
+ arg++;
+ } else if (!strcmp(*arg, "-out") && arg[1]) {
+ certpath = arg[1];
+ arg++;
+ } else if (!strcmp(*arg, "-subj") && arg[1]) {
+ if (arg[1][0] != '/' || strchr(arg[1], ';')) {
+ fprintf(stderr, "error: invalid subject");
+ return 1;
+ }
+ subject = calloc(strlen(arg[1]) + 1, 1);
+ char *oldc = arg[1] + 1, *newc = subject, *delim;
+ do {
+ delim = strchr(oldc, '=');
+ if (!delim) {
+ fprintf(stderr, "error: invalid subject");
+ return 1;
+ }
+ memcpy(newc, oldc, delim - oldc + 1);
+ newc += delim - oldc + 1;
+ oldc = delim + 1;
+
+ delim = strchr(oldc, '/');
+ if (!delim) {
+ delim = arg[1] + strlen(arg[1]);
+ }
+ memcpy(newc, oldc, delim - oldc);
+ newc += delim - oldc;
+ *newc++ = ';';
+ oldc = delim + 1;
+ } while(*delim);
+ arg++;
+ }
+ arg++;
+ }
+
+ gen_key(&key, ksize, exp, pem);
+
+ if (keypath)
+ write_key(&key, keypath, pem);
+
+ from = (from < 1000000000) ? 1000000000 : from;
+ strftime(fstr, sizeof(fstr), "%Y%m%d%H%M%S", gmtime(&from));
+ to = from + 60 * 60 * 24 * days;
+ if (to < from)
+ to = INT_MAX;
+ strftime(tstr, sizeof(tstr), "%Y%m%d%H%M%S", gmtime(&to));
+
+ fprintf(stderr, "Generating selfsigned certificate with subject '%s'"
+ " and validity %s-%s\n", subject, fstr, tstr);
+
+ x509write_crt_init(&cert);
+ x509write_crt_set_md_alg(&cert, POLARSSL_MD_SHA1);
+ x509write_crt_set_issuer_key(&cert, &key);
+ x509write_crt_set_subject_key(&cert, &key);
+ x509write_crt_set_subject_name(&cert, subject);
+ x509write_crt_set_issuer_name(&cert, subject);
+ x509write_crt_set_validity(&cert, fstr, tstr);
+ x509write_crt_set_basic_constraints(&cert, 0, -1);
+ x509write_crt_set_subject_key_identifier(&cert);
+ x509write_crt_set_authority_key_identifier(&cert);
+
+ mpi_init(&serial);
+ mpi_read_string(&serial, 10, "1");
+ x509write_crt_set_serial(&cert, &serial);
+
+ if (pem) {
+ if (x509write_crt_pem(&cert, (void *) buf, sizeof(buf), _urandom, NULL) < 0) {
+ fprintf(stderr, "Failed to generate certificate\n");
+ return 1;
+ }
+
+ len = strlen(buf);
+ } else {
+ len = x509write_crt_der(&cert, (void *) buf, sizeof(buf), _urandom, NULL);
+ if (len < 0) {
+ fprintf(stderr, "Failed to generate certificate: %d\n", len);
+ return 1;
+ }
+ }
+ write_file(certpath, len, pem);
+
+ x509write_crt_free(&cert);
+ mpi_free(&serial);
+ pk_free(&key);
+
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ urandom_fd = open("/dev/urandom", O_RDONLY);
+
+ if (!argv[1]) {
+ //Usage
+ } else if (!strcmp(argv[1], "rsakey")) {
+ return rsakey(argv+2);
+ } else if (!strcmp(argv[1], "selfsigned")) {
+ return selfsigned(argv+2);
+ }
+
+ fprintf(stderr,
+ "PX5G X.509 Certificate Generator Utility v" PX5G_VERSION "\n" PX5G_COPY
+ "\nbased on PolarSSL by Christophe Devine and Paul Bakker\n\n");
+ fprintf(stderr, "Usage: %s [rsakey|selfsigned]\n", *argv);
+ return 1;
+}
projects / thirdparty / openwrt.git / commitdiff
