--- /dev/null
+/*
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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; either version 2 of the License, or (at your
+ * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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.
+ */
+
+#include <time.h>
+#include <errno.h>
+
+#include "pki.h"
+
+#include <utils/debug.h>
+#include <asn1/asn1.h>
+#include <collections/linked_list.h>
+#include <credentials/certificates/certificate.h>
+#include <credentials/certificates/x509.h>
+#include <credentials/certificates/ac.h>
+
+/**
+ * Issue an attribute certificate
+ */
+static int acert()
+{
+ cred_encoding_type_t form = CERT_ASN1_DER;
+ hash_algorithm_t digest = HASH_SHA1;
+ certificate_t *ac = NULL, *cert = NULL, *issuer =NULL;
+ private_key_t *private = NULL;
+ public_key_t *public = NULL;
+ char *file = NULL, *hex = NULL, *issuercert = NULL, *issuerkey = NULL;
+ char *error = NULL, *keyid = NULL;
+ linked_list_t *groups;
+ chunk_t serial = chunk_empty, encoding = chunk_empty;
+ time_t not_before, not_after, lifetime = 24;
+ rng_t *rng;
+ char *arg;
+
+ groups = linked_list_create();
+
+ while (TRUE)
+ {
+ switch (command_getopt(&arg))
+ {
+ case 'h':
+ goto usage;
+ case 'g':
+ digest = enum_from_name(hash_algorithm_short_names, arg);
+ if (digest == -1)
+ {
+ error = "invalid --digest type";
+ goto usage;
+ }
+ continue;
+ case 'i':
+ file = arg;
+ continue;
+ case 'm':
+ groups->insert_last(groups, arg);
+ continue;
+ case 'c':
+ issuercert = arg;
+ continue;
+ case 'k':
+ issuerkey = arg;
+ continue;
+ case 'x':
+ keyid = arg;
+ continue;
+ case 'l':
+ lifetime = atoi(arg);
+ if (!lifetime)
+ {
+ error = "invalid --lifetime value";
+ goto usage;
+ }
+ continue;
+ case 's':
+ hex = arg;
+ continue;
+ case 'f':
+ if (!get_form(arg, &form, CRED_CERTIFICATE))
+ {
+ error = "invalid output format";
+ goto usage;
+ }
+ continue;
+ case EOF:
+ break;
+ default:
+ error = "invalid --acert option";
+ goto usage;
+ }
+ break;
+ }
+ if (!issuercert)
+ {
+ error = "--issuercert is required";
+ goto usage;
+ }
+ if (!issuerkey && !keyid)
+ {
+ error = "--issuerkey or --issuerkeyid is required";
+ goto usage;
+ }
+
+ issuer = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509,
+ BUILD_FROM_FILE, issuercert, BUILD_END);
+ if (!issuer)
+ {
+ error = "parsing issuer certificate failed";
+ goto end;
+ }
+ public = issuer->get_public_key(issuer);
+ if (!public)
+ {
+ error = "extracting issuer certificate public key failed";
+ goto end;
+ }
+ if (issuerkey)
+ {
+ private = lib->creds->create(lib->creds, CRED_PRIVATE_KEY,
+ public->get_type(public),
+ BUILD_FROM_FILE, issuerkey, BUILD_END);
+ }
+ else
+ {
+ chunk_t chunk;
+
+ chunk = chunk_from_hex(chunk_create(keyid, strlen(keyid)), NULL);
+ private = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, KEY_ANY,
+ BUILD_PKCS11_KEYID, chunk, BUILD_END);
+ free(chunk.ptr);
+ }
+ if (!private)
+ {
+ error = "loading issuer private key failed";
+ goto end;
+ }
+ if (!private->belongs_to(private, public))
+ {
+ error = "issuer private key does not match issuer certificate";
+ goto end;
+ }
+
+ if (hex)
+ {
+ serial = chunk_from_hex(chunk_create(hex, strlen(hex)), NULL);
+ }
+ else
+ {
+ rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK);
+ if (!rng)
+ {
+ error = "no random number generator found";
+ goto end;
+ }
+ if (!rng_allocate_bytes_not_zero(rng, 8, &serial, FALSE))
+ {
+ error = "failed to generate serial number";
+ rng->destroy(rng);
+ goto end;
+ }
+ serial.ptr[0] &= 0x7F;
+ rng->destroy(rng);
+ }
+
+ if (file)
+ {
+ cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509,
+ BUILD_FROM_FILE, file, BUILD_END);
+ }
+ else
+ {
+ if (!chunk_from_fd(0, &encoding))
+ {
+ fprintf(stderr, "%s: ", strerror(errno));
+ error = "reading public key failed";
+ goto end;
+ }
+ cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509,
+ BUILD_BLOB, encoding, BUILD_END);
+ chunk_free(&encoding);
+ }
+ if (!cert)
+ {
+ error = "parsing user certificate failed";
+ goto end;
+ }
+
+ not_before = time(NULL);
+ not_after = not_before + lifetime * 60 * 60;
+
+ ac = lib->creds->create(lib->creds,
+ CRED_CERTIFICATE, CERT_X509_AC,
+ BUILD_CERT, cert,
+ BUILD_NOT_BEFORE_TIME, not_before,
+ BUILD_NOT_AFTER_TIME, not_after,
+ BUILD_SERIAL, serial,
+ BUILD_AC_GROUP_STRINGS, groups,
+ BUILD_SIGNING_CERT, issuer,
+ BUILD_SIGNING_KEY, private,
+ BUILD_END);
+ if (!ac)
+ {
+ error = "generating attribute certificate failed";
+ goto end;
+ }
+ if (!ac->get_encoding(ac, form, &encoding))
+ {
+ error = "encoding attribute certificate failed";
+ goto end;
+ }
+ if (fwrite(encoding.ptr, encoding.len, 1, stdout) != 1)
+ {
+ error = "writing attribute certificate key failed";
+ goto end;
+ }
+
+end:
+ DESTROY_IF(ac);
+ DESTROY_IF(cert);
+ DESTROY_IF(issuer);
+ DESTROY_IF(public);
+ DESTROY_IF(private);
+ groups->destroy(groups);
+ free(encoding.ptr);
+ free(serial.ptr);
+
+ if (error)
+ {
+ fprintf(stderr, "%s\n", error);
+ return 1;
+ }
+ return 0;
+
+usage:
+ groups->destroy(groups);
+ return command_usage(error);
+}
+
+/**
+ * Register the command.
+ */
+static void __attribute__ ((constructor))reg()
+{
+ command_register((command_t) {
+ acert, 'z', "acert",
+ "issue an attribute certificate",
+ {"[--in file] [--group name]* --issuerkey file|--issuerkeyid hex",
+ " --issuercert file [--lifetime hours] [--serial hex]",
+ "[--digest md5|sha1|sha224|sha256|sha384|sha512] [--outform der|pem]"},
+ {
+ {"help", 'h', 0, "show usage information"},
+ {"in", 'i', 1, "holder certificate, default: stdin"},
+ {"group", 'm', 1, "group membership string to include"},
+ {"issuercert", 'c', 1, "issuer certificate file"},
+ {"issuerkey", 'k', 1, "issuer private key file"},
+ {"issuerkeyid", 'x', 1, "keyid on smartcard of issuer private key"},
+ {"lifetime", 'l', 1, "hours the acert is valid, default: 24"},
+ {"serial", 's', 1, "serial number in hex, default: random"},
+ {"digest", 'g', 1, "digest for signature creation, default: sha1"},
+ {"outform", 'f', 1, "encoding of generated cert, default: der"},
+ }
+ });
+}
projects / thirdparty / strongswan.git / commitdiff
