add EVP and PKCS11

CHANGES

+2348.	[func]		Use the EVP interface to OpenSSL. Add PKCS#11 support.
+			Documentation is in the new README.pkcs11 file.
+			[RT #16844]
+
 2347.	[bug]		Delete now traverses the RB tree in the canonical
 			order. [RT #17451]
 

README.pkcs11

+
+			BIND-9 PKCS#11 support
+
+Prerequisite
+
+The PKCS#11 support needs a PKCS#11 OpenSSL engine based on the Solaris one,
+released the 2007-11-21 for OpenSSL 0.9.8g, with a bug fix (call to free)
+and some improvements, including user friendly PIN management.
+
+Compilation
+
+"configure --with-pkcs11 ..."
+
+PKCS#11 Libraries
+
+Tested with Solaris one with a SCA board and with openCryptoki with the
+software token.
+
+OpenSSL Engines
+
+With PKCS#11 support the PKCS#11 engine is statically loaded but at its
+initialization it dynamically loads the PKCS#11 objects.
+Even the pre commands are therefore unused they are defined with:
+ SO_PATH:
+   define: PKCS11_SO_PATH
+   default: /usr/local/lib/engines/engine_pkcs11.so
+ MODULE_PATH:
+   define: PKCS11_MODULE_PATH
+   default: /usr/lib/libpkcs11.so
+Without PKCS#11 support, a specific OpenSSL engine can be still used
+by defining ENGINE_ID at compile time.
+
+PKCS#11 tools
+
+The contrib/pkcs11-keygen directory contains a set of experimental tools
+to handle keys stored in a Hardware Security Module at the benefit of BIND.
+
+The patch for OpenSSL 0.9.8g is in this directory. Read its README.pkcs11
+for the way to use it (these are the original notes so with the original
+path, etc. Define OPENCRYPTOKI to use it with openCryptoki.)
+
+PIN management
+
+With the just fixed PKCS#11 OpenSSL engine, the PIN should be entered
+each time it is required. With the improved engine, the PIN should be
+entered the first time it is required or can be configured in the
+OpenSSL configuration file (aka. openssl.cnf) by adding in it:
+ - at the beginning:
+	openssl_conf = openssl_def
+ - at any place these sections:
+	[ openssl_def ]
+	engines = engine_section
+	[ engine_section ]
+	pkcs11 = pkcs11_section
+	[ pkcs11_section ]
+	PIN = put__your__pin__value__here
+
+Note
+
+Some names here are registered trademarks, at least Solaris is a trademark
+of Sun Microsystems Inc...

bin/dnssec/Makefile.in

@@ -13,7 +13,7 @@
 # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 
-# $Id: Makefile.in,v 1.32 2007/06/19 23:46:59 tbox Exp $
+# $Id: Makefile.in,v 1.33 2008/03/31 14:42:50 fdupont Exp $
 
 srcdir =	@srcdir@
 VPATH =		@srcdir@
@@ -39,20 +39,27 @@ DEPLIBS =	${DNSDEPLIBS} ${ISCDEPLIBS}
 LIBS =		${DNSLIBS} ${ISCLIBS} @LIBS@
 
 # Alphabetically
-TARGETS =	dnssec-keygen@EXEEXT@ dnssec-signzone@EXEEXT@
+TARGETS =	dnssec-keygen@EXEEXT@ dnssec-signzone@EXEEXT@ \
+		dnssec-keyfromlabel@EXEEXT@
 
 OBJS =		dnssectool.@O@
 
-SRCS =		dnssec-keygen.c dnssec-signzone.c dnssectool.c
+SRCS =		dnssec-keyfromlabel.c dnssec-keygen.c dnssec-signzone.c \
+		dnssectool.c
 
-MANPAGES =	dnssec-keygen.8 dnssec-signzone.8
+MANPAGES =	dnssec-keyfromlabel.8 dnssec-keygen.8 dnssec-signzone.8
 
-HTMLPAGES =	dnssec-keygen.html dnssec-signzone.html
+HTMLPAGES =	dnssec-keyfromlabel.html dnssec-keygen.html \
+		dnssec-signzone.html
 
 MANOBJS =	${MANPAGES} ${HTMLPAGES}
 
 @BIND9_MAKE_RULES@
 
+dnssec-keyfromlabel@EXEEXT@: dnssec-keyfromlabel.@O@ ${OBJS} ${DEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
+	dnssec-keyfromlabel.@O@ ${OBJS} ${LIBS}
+
 dnssec-keygen@EXEEXT@: dnssec-keygen.@O@ ${OBJS} ${DEPLIBS}
 	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ \
 	dnssec-keygen.@O@ ${OBJS} ${LIBS}

bin/dnssec/dnssec-keyfromlabel.c

+/*
+ * Portions Copyright (C) 2004-2008  Internet Systems Consortium, Inc. ("ISC")
+ * Portions Copyright (C) 1999-2003  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE
+ * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Portions Copyright (C) 1995-2000 by Network Associates, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NETWORK ASSOCIATES DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE
+ * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: dnssec-keyfromlabel.c,v 1.2 2008/03/31 14:42:50 fdupont Exp $ */
+
+/*! \file */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include <isc/buffer.h>
+#include <isc/commandline.h>
+#include <isc/entropy.h>
+#include <isc/mem.h>
+#include <isc/region.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+#include <dns/fixedname.h>
+#include <dns/keyvalues.h>
+#include <dns/log.h>
+#include <dns/name.h>
+#include <dns/rdataclass.h>
+#include <dns/result.h>
+#include <dns/secalg.h>
+
+#include <dst/dst.h>
+
+#include "dnssectool.h"
+
+#define MAX_RSA 4096 /* should be long enough... */
+
+const char *program = "dnssec-keyfromlabel";
+int verbose;
+
+static const char *algs = "RSA | RSAMD5 | DH | DSA | RSASHA1";
+
+static void
+usage(void) {
+	fprintf(stderr, "Usage:\n");
+	fprintf(stderr, "    %s -a alg -l label [options] name\n\n",
+		program);
+	fprintf(stderr, "Version: %s\n", VERSION);
+	fprintf(stderr, "Required options:\n");
+	fprintf(stderr, "    -a algorithm: %s\n", algs);
+	fprintf(stderr, "    -l label: label of the key\n");
+	fprintf(stderr, "    name: owner of the key\n");
+	fprintf(stderr, "Other options:\n");
+	fprintf(stderr, "    -n nametype: ZONE | HOST | ENTITY | USER | OTHER\n");
+	fprintf(stderr, "        (DNSKEY generation defaults to ZONE\n");
+	fprintf(stderr, "    -c <class> (default: IN)\n");
+	fprintf(stderr, "    -f keyflag: KSK\n");
+	fprintf(stderr, "    -t <type>: "
+		"AUTHCONF | NOAUTHCONF | NOAUTH | NOCONF "
+		"(default: AUTHCONF)\n");
+	fprintf(stderr, "    -p <protocol>: "
+	       "default: 3 [dnssec]\n");
+	fprintf(stderr, "    -v <verbose level>\n");
+	fprintf(stderr, "    -k : generate a TYPE=KEY key\n");
+	fprintf(stderr, "Output:\n");
+	fprintf(stderr, "     K<name>+<alg>+<id>.key, "
+		"K<name>+<alg>+<id>.private\n");
+
+	exit (-1);
+}
+
+int
+main(int argc, char **argv) {
+	char		*algname = NULL, *nametype = NULL, *type = NULL;
+	char		*classname = NULL;
+	char		*endp;
+	dst_key_t	*key = NULL, *oldkey;
+	dns_fixedname_t	fname;
+	dns_name_t	*name;
+	isc_uint16_t	flags = 0, ksk = 0;
+	dns_secalg_t	alg;
+	isc_boolean_t	null_key = ISC_FALSE;
+	isc_mem_t	*mctx = NULL;
+	int		ch;
+	int		protocol = -1, signatory = 0;
+	isc_result_t	ret;
+	isc_textregion_t r;
+	char		filename[255];
+	isc_buffer_t	buf;
+	isc_log_t	*log = NULL;
+	isc_entropy_t	*ectx = NULL;
+	dns_rdataclass_t rdclass;
+	int		options = DST_TYPE_PRIVATE | DST_TYPE_PUBLIC;
+	char		*label = NULL;
+
+	if (argc == 1)
+		usage();
+
+	RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS);
+
+	dns_result_register();
+
+	isc_commandline_errprint = ISC_FALSE;
+
+	while ((ch = isc_commandline_parse(argc, argv,
+					 "a:c:f:kl:n:p:t:v:h")) != -1)
+	{
+	    switch (ch) {
+		case 'a':
+			algname = isc_commandline_argument;
+			break;
+		case 'c':
+			classname = isc_commandline_argument;
+			break;
+		case 'f':
+			if (strcasecmp(isc_commandline_argument, "KSK") == 0)
+				ksk = DNS_KEYFLAG_KSK;
+			else
+				fatal("unknown flag '%s'",
+				      isc_commandline_argument);
+			break;
+		case 'k':
+			options |= DST_TYPE_KEY;
+			break;
+		case 'l':
+			label = isc_commandline_argument;
+			break;
+		case 'n':
+			nametype = isc_commandline_argument;
+			break;
+		case 'p':
+			protocol = strtol(isc_commandline_argument, &endp, 10);
+			if (*endp != '\0' || protocol < 0 || protocol > 255)
+				fatal("-p must be followed by a number "
+				      "[0..255]");
+			break;
+		case 't':
+			type = isc_commandline_argument;
+			break;
+		case 'v':
+			verbose = strtol(isc_commandline_argument, &endp, 0);
+			if (*endp != '\0')
+				fatal("-v must be followed by a number");
+			break;
+
+		case '?':
+			if (isc_commandline_option != '?')
+				fprintf(stderr, "%s: invalid argument -%c\n",
+					program, isc_commandline_option);
+		case 'h':
+			usage();
+
+		default:
+			fprintf(stderr, "%s: unhandled option -%c\n",
+				program, isc_commandline_option);
+			exit(1);
+		}
+	}
+
+	if (ectx == NULL)
+		setup_entropy(mctx, NULL, &ectx);
+	ret = dst_lib_init(mctx, ectx,
+			   ISC_ENTROPY_BLOCKING | ISC_ENTROPY_GOODONLY);
+	if (ret != ISC_R_SUCCESS)
+		fatal("could not initialize dst");
+
+	setup_logging(verbose, mctx, &log);
+
+	if (label == NULL)
+		fatal("the key label was not specified");
+	if (argc < isc_commandline_index + 1)
+		fatal("the key name was not specified");
+	if (argc > isc_commandline_index + 1)
+		fatal("extraneous arguments");
+
+	if (algname == NULL)
+		fatal("no algorithm was specified");
+	if (strcasecmp(algname, "RSA") == 0) {
+		fprintf(stderr, "The use of RSA (RSAMD5) is not recommended.\n"
+				"If you still wish to use RSA (RSAMD5) please "
+				"specify \"-a RSAMD5\"\n");
+		return (1);
+	} else {
+		r.base = algname;
+		r.length = strlen(algname);
+		ret = dns_secalg_fromtext(&alg, &r);
+		if (ret != ISC_R_SUCCESS)
+			fatal("unknown algorithm %s", algname);
+		if (alg == DST_ALG_DH)
+			options |= DST_TYPE_KEY;
+	}
+
+	if (type != NULL && (options & DST_TYPE_KEY) != 0) {
+		if (strcasecmp(type, "NOAUTH") == 0)
+			flags |= DNS_KEYTYPE_NOAUTH;
+		else if (strcasecmp(type, "NOCONF") == 0)
+			flags |= DNS_KEYTYPE_NOCONF;
+		else if (strcasecmp(type, "NOAUTHCONF") == 0) {
+			flags |= (DNS_KEYTYPE_NOAUTH | DNS_KEYTYPE_NOCONF);
+		}
+		else if (strcasecmp(type, "AUTHCONF") == 0)
+			/* nothing */;
+		else
+			fatal("invalid type %s", type);
+	}
+
+	if (nametype == NULL) {
+		if ((options & DST_TYPE_KEY) != 0) /* KEY */
+			fatal("no nametype specified");
+		flags |= DNS_KEYOWNER_ZONE;	/* DNSKEY */
+	} else if (strcasecmp(nametype, "zone") == 0)
+		flags |= DNS_KEYOWNER_ZONE;
+	else if ((options & DST_TYPE_KEY) != 0)	{ /* KEY */
+		if (strcasecmp(nametype, "host") == 0 ||
+			 strcasecmp(nametype, "entity") == 0)
+			flags |= DNS_KEYOWNER_ENTITY;
+		else if (strcasecmp(nametype, "user") == 0)
+			flags |= DNS_KEYOWNER_USER;
+		else
+			fatal("invalid KEY nametype %s", nametype);
+	} else if (strcasecmp(nametype, "other") != 0) /* DNSKEY */
+		fatal("invalid DNSKEY nametype %s", nametype);
+
+	rdclass = strtoclass(classname);
+
+	if ((options & DST_TYPE_KEY) != 0)  /* KEY */
+		flags |= signatory;
+	else if ((flags & DNS_KEYOWNER_ZONE) != 0) /* DNSKEY */
+		flags |= ksk;
+
+	if (protocol == -1)
+		protocol = DNS_KEYPROTO_DNSSEC;
+	else if ((options & DST_TYPE_KEY) == 0 &&
+		 protocol != DNS_KEYPROTO_DNSSEC)
+		fatal("invalid DNSKEY protocol: %d", protocol);
+
+	if ((flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY) {
+		if ((flags & DNS_KEYFLAG_SIGNATORYMASK) != 0)
+			fatal("specified null key with signing authority");
+	}
+
+	if ((flags & DNS_KEYFLAG_OWNERMASK) == DNS_KEYOWNER_ZONE &&
+	    alg == DNS_KEYALG_DH)
+		fatal("a key with algorithm '%s' cannot be a zone key",
+		      algname);
+
+	dns_fixedname_init(&fname);
+	name = dns_fixedname_name(&fname);
+	isc_buffer_init(&buf, argv[isc_commandline_index],
+			strlen(argv[isc_commandline_index]));
+	isc_buffer_add(&buf, strlen(argv[isc_commandline_index]));
+	ret = dns_name_fromtext(name, &buf, dns_rootname, ISC_FALSE, NULL);
+	if (ret != ISC_R_SUCCESS)
+		fatal("invalid key name %s: %s", argv[isc_commandline_index],
+		      isc_result_totext(ret));
+
+	if ((flags & DNS_KEYFLAG_TYPEMASK) == DNS_KEYTYPE_NOKEY)
+		null_key = ISC_TRUE;
+
+	isc_buffer_init(&buf, filename, sizeof(filename) - 1);
+
+	/* associate the key */
+	ret = dst_key_fromlabel(name, alg, flags, protocol,
+			        rdclass, "", label, NULL, mctx, &key);
+	isc_entropy_stopcallbacksources(ectx);
+
+	if (ret != ISC_R_SUCCESS) {
+		char namestr[DNS_NAME_FORMATSIZE];
+		char algstr[ALG_FORMATSIZE];
+		dns_name_format(name, namestr, sizeof(namestr));
+		alg_format(alg, algstr, sizeof(algstr));
+		fatal("failed to generate key %s/%s: %s\n",
+		      namestr, algstr, isc_result_totext(ret));
+		exit(-1);
+	}
+
+	/*
+	 * Try to read a key with the same name, alg and id from disk.
+	 * If there is one we must continue generating a new one
+	 * unless we were asked to generate a null key, in which
+	 * case we return failure.
+	 */
+	ret = dst_key_fromfile(name, dst_key_id(key), alg,
+			       DST_TYPE_PRIVATE, NULL, mctx, &oldkey);
+	/* do not overwrite an existing key  */
+	if (ret == ISC_R_SUCCESS) {
+		isc_buffer_clear(&buf);
+		ret = dst_key_buildfilename(key, 0, NULL, &buf);
+		fprintf(stderr, "%s: %s already exists\n",
+			program, filename);
+		dst_key_free(&key);
+		exit (1);
+	}
+
+	ret = dst_key_tofile(key, options, NULL);
+	if (ret != ISC_R_SUCCESS) {
+		char keystr[KEY_FORMATSIZE];
+		key_format(key, keystr, sizeof(keystr));
+		fatal("failed to write key %s: %s\n", keystr,
+		      isc_result_totext(ret));
+	}
+
+	isc_buffer_clear(&buf);
+	ret = dst_key_buildfilename(key, 0, NULL, &buf);
+	printf("%s\n", filename);
+	dst_key_free(&key);
+
+	cleanup_logging(&log);
+	cleanup_entropy(&ectx);
+	dst_lib_destroy();
+	dns_name_destroy();
+	if (verbose > 10)
+		isc_mem_stats(mctx, stdout);
+	isc_mem_destroy(&mctx);
+
+	return (0);
+}

bin/dnssec/dnssec-keyfromlabel.docbook

+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+               "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"
+	       [<!ENTITY mdash "&#8212;">]>
+<!--
+ - Copyright (C) 2004-2008  Internet Systems Consortium, Inc. ("ISC")
+ - Copyright (C) 2000-2003  Internet Software Consortium.
+ -
+ - Permission to use, copy, modify, and distribute this software for any
+ - purpose with or without fee is hereby granted, provided that the above
+ - copyright notice and this permission notice appear in all copies.
+ -
+ - THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ - REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ - AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ - INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ - LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ - OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ - PERFORMANCE OF THIS SOFTWARE.
+-->
+
+<!-- $Id: dnssec-keyfromlabel.docbook,v 1.2 2008/03/31 14:42:50 fdupont Exp $ -->
+<refentry id="man.dnssec-keyfromlabel">
+  <refentryinfo>
+    <date>february 8, 2008</date>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle><application>dnssec-keyfromlabel</application></refentrytitle>
+    <manvolnum>8</manvolnum>
+    <refmiscinfo>BIND9</refmiscinfo>
+  </refmeta>
+
+  <refnamediv>
+    <refname><application>dnssec-keyfromlabel</application></refname>
+    <refpurpose>DNSSEC key generation tool</refpurpose>
+  </refnamediv>
+
+  <docinfo>
+    <copyright>
+      <year>2004</year>
+      <year>2005</year>
+      <year>2006</year>
+      <year>2007</year>
+      <year>2008</year>
+      <holder>Internet Systems Consortium, Inc. ("ISC")</holder>
+    </copyright>
+    <copyright>
+      <year>2000</year>
+      <year>2001</year>
+      <year>2002</year>
+      <year>2003</year>
+      <holder>Internet Software Consortium.</holder>
+    </copyright>
+  </docinfo>
+
+  <refsynopsisdiv>
+    <cmdsynopsis>
+      <command>dnssec-keyfromlabel</command>
+      <arg choice="req">-a <replaceable class="parameter">algorithm</replaceable></arg>
+      <arg choice="req">-l <replaceable class="parameter">label</replaceable></arg>
+      <arg><option>-c <replaceable class="parameter">class</replaceable></option></arg>
+      <arg><option>-f <replaceable class="parameter">flag</replaceable></option></arg>
+      <arg><option>-k</option></arg>
+      <arg><option>-n <replaceable class="parameter">nametype</replaceable></option></arg>
+      <arg><option>-p <replaceable class="parameter">protocol</replaceable></option></arg>
+      <arg><option>-t <replaceable class="parameter">type</replaceable></option></arg>
+      <arg><option>-v <replaceable class="parameter">level</replaceable></option></arg>
+      <arg choice="req">name</arg>
+    </cmdsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>DESCRIPTION</title>
+    <para><command>dnssec-keyfromlabel</command>
+      gets keys with the given label from a crypto hardware and builds
+      key files for DNSSEC (Secure DNS), as defined in RFC 2535
+      and RFC 4034.  
+    </para>
+  </refsect1>
+
+  <refsect1>
+    <title>OPTIONS</title>
+
+    <variablelist>
+      <varlistentry>
+        <term>-a <replaceable class="parameter">algorithm</replaceable></term>
+        <listitem>
+	  <para>
+	    Selects the cryptographic algorithm.  The value of
+	    <option>algorithm</option> must be one of RSAMD5 (RSA)
+	    or RSASHA1, DSA or DH (Diffie Hellman).  These values
+	    are case insensitive.
+	  </para>
+          <para>
+            Note 1: that for DNSSEC, RSASHA1 is a mandatory to implement
+            algorithm, and DSA is recommended.
+          </para>
+          <para>
+            Note 2: DH automatically sets the -k flag.
+          </para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>-l <replaceable class="parameter">label</replaceable></term>
+        <listitem>
+          <para>
+            Specifies the label of keys in the crypto hardware
+            (PKCS#11 device).
+          </para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>-n <replaceable class="parameter">nametype</replaceable></term>
+        <listitem>
+          <para>
+            Specifies the owner type of the key.  The value of
+            <option>nametype</option> must either be ZONE (for a DNSSEC
+            zone key (KEY/DNSKEY)), HOST or ENTITY (for a key associated with
+            a host (KEY)),
+            USER (for a key associated with a user(KEY)) or OTHER (DNSKEY).
+            These values are
+            case insensitive.
+          </para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>-c <replaceable class="parameter">class</replaceable></term>
+        <listitem>
+          <para>
+            Indicates that the DNS record containing the key should have
+            the specified class.  If not specified, class IN is used.
+          </para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>-f <replaceable class="parameter">flag</replaceable></term>
+        <listitem>
+          <para>
+            Set the specified flag in the flag field of the KEY/DNSKEY record.
+            The only recognized flag is KSK (Key Signing Key) DNSKEY.
+          </para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>-h</term>
+        <listitem>
+          <para>
+            Prints a short summary of the options and arguments to
+            <command>dnssec-keygen</command>.
+          </para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>-k</term>
+        <listitem>
+          <para>
+            Generate KEY records rather than DNSKEY records.
+          </para>
+        </listitem>
+      </varlistentry>