NAME

       dnssec-keyfromlabel - DNSSEC key generation tool

SYNOPSIS

       dnssec-keyfromlabel {-l label} [-3] [-a algorithm] [-A date/offset] [-c class]
                           [-D date/offset] [-E engine] [-f flag] [-G] [-I date/offset] [-k]
                           [-K directory] [-L ttl] [-n nametype] [-P date/offset] [-p protocol]
                           [-R date/offset] [-t type] [-v level] [-y] {name}

DESCRIPTION

       dnssec-keyfromlabel 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.

       The name of the key is specified on the command line. This must match the name of the zone
       for which the key is being generated.

OPTIONS

       -a algorithm
           Selects the cryptographic algorithm. The value of algorithm must be one of RSAMD5,
           RSASHA1, DSA, NSEC3RSASHA1, NSEC3DSA, RSASHA256, RSASHA512, ECCGOST, ECDSAP256SHA256
           or ECDSAP384SHA384. These values are case insensitive.

           If no algorithm is specified, then RSASHA1 will be used by default, unless the -3
           option is specified, in which case NSEC3RSASHA1 will be used instead. (If -3 is used
           and an algorithm is specified, that algorithm will be checked for compatibility with
           NSEC3.)

           Note 1: that for DNSSEC, RSASHA1 is a mandatory to implement algorithm, and DSA is
           recommended.

           Note 2: DH automatically sets the -k flag.

       -3
           Use an NSEC3-capable algorithm to generate a DNSSEC key. If this option is used and no
           algorithm is explicitly set on the command line, NSEC3RSASHA1 will be used by default.

       -E engine
           Specifies the name of the crypto hardware (OpenSSL engine). When compiled with PKCS#11
           support it defaults to "pkcs11".

       -l label
           Specifies the label of the key pair in the crypto hardware. The label may be preceded
           by an optional OpenSSL engine name, separated by a colon, as in "pkcs11:keylabel".

       -n nametype
           Specifies the owner type of the key. The value of nametype 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.

       -C
           Compatibility mode: generates an old-style key, without any metadata. By default,
           dnssec-keyfromlabel will include the key's creation date in the metadata stored with
           the private key, and other dates may be set there as well (publication date,
           activation date, etc). Keys that include this data may be incompatible with older
           versions of BIND; the -C option suppresses them.

       -c class
           Indicates that the DNS record containing the key should have the specified class. If
           not specified, class IN is used.

       -f flag
           Set the specified flag in the flag field of the KEY/DNSKEY record. The only recognized
           flags are KSK (Key Signing Key) and REVOKE.

       -G
           Generate a key, but do not publish it or sign with it. This option is incompatible
           with -P and -A.

       -h
           Prints a short summary of the options and arguments to dnssec-keyfromlabel.

       -K directory
           Sets the directory in which the key files are to be written.

       -k
           Generate KEY records rather than DNSKEY records.

       -L ttl
           Sets the default TTL to use for this key when it is converted into a DNSKEY RR. If the
           key is imported into a zone, this is the TTL that will be used for it, unless there
           was already a DNSKEY RRset in place, in which case the existing TTL would take
           precedence. Setting the default TTL to 0 or none removes it.

       -p protocol
           Sets the protocol value for the key. The protocol is a number between 0 and 255. The
           default is 3 (DNSSEC). Other possible values for this argument are listed in RFC 2535
           and its successors.

       -t type
           Indicates the use of the key.  type must be one of AUTHCONF, NOAUTHCONF, NOAUTH, or
           NOCONF. The default is AUTHCONF. AUTH refers to the ability to authenticate data, and
           CONF the ability to encrypt data.

       -v level
           Sets the debugging level.

       -y
           Allows DNSSEC key files to be generated even if the key ID would collide with that of
           an existing key, in the event of either key being revoked. (This is only safe to use
           if you are sure you won't be using RFC 5011 trust anchor maintenance with either of
           the keys involved.)

TIMING OPTIONS

       Dates can be expressed in the format YYYYMMDD or YYYYMMDDHHMMSS. If the argument begins
       with a '+' or '-', it is interpreted as an offset from the present time. For convenience,
       if such an offset is followed by one of the suffixes 'y', 'mo', 'w', 'd', 'h', or 'mi',
       then the offset is computed in years (defined as 365 24-hour days, ignoring leap years),
       months (defined as 30 24-hour days), weeks, days, hours, or minutes, respectively. Without
       a suffix, the offset is computed in seconds.

       -P date/offset
           Sets the date on which a key is to be published to the zone. After that date, the key
           will be included in the zone but will not be used to sign it. If not set, and if the
           -G option has not been used, the default is "now".

       -A date/offset
           Sets the date on which the key is to be activated. After that date, the key will be
           included in the zone and used to sign it. If not set, and if the -G option has not
           been used, the default is "now".

       -R date/offset
           Sets the date on which the key is to be revoked. After that date, the key will be
           flagged as revoked. It will be included in the zone and will be used to sign it.

       -I date/offset
           Sets the date on which the key is to be retired. After that date, the key will still
           be included in the zone, but it will not be used to sign it.

       -D date/offset
           Sets the date on which the key is to be deleted. After that date, the key will no
           longer be included in the zone. (It may remain in the key repository, however.)

GENERATED KEY FILES

       When dnssec-keyfromlabel completes successfully, it prints a string of the form
       Knnnn.+aaa+iiiii to the standard output. This is an identification string for the key
       files it has generated.

       •   nnnn is the key name.

       •   aaa is the numeric representation of the algorithm.

       •   iiiii is the key identifier (or footprint).

       dnssec-keyfromlabel creates two files, with names based on the printed string.
       Knnnn.+aaa+iiiii.key contains the public key, and Knnnn.+aaa+iiiii.private contains the
       private key.

       The .key file contains a DNS KEY record that can be inserted into a zone file (directly or
       with a $INCLUDE statement).

       The .private file contains algorithm-specific fields. For obvious security reasons, this
       file does not have general read permission.

SEE ALSO

       dnssec-keygen(8), dnssec-signzone(8), BIND 9 Administrator Reference Manual, RFC 4034.

AUTHOR

       Internet Systems Consortium

COPYRIGHT

       Copyright © 2008-2012 Internet Systems Consortium, Inc. ("ISC")