February 8, 2008
dnssec-keyfromlabel 8 BIND9
dnssec-keyfromlabel DNSSEC key generation tool
2008 2010 Internet Systems Consortium, Inc. ("ISC")
`dnssec-keyfromlabel` -a algorithm -l label `-c class` `-f flag` `-k` `-n nametype` `-p protocol` `-t type` `-v level` 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.

## OPTIONS

-a algorithm

  Selects the cryptographic algorithm. The value of `algorithm` must be one of RSAMD5, RSASHA1, DSA, NSEC3RSASHA1, NSEC3DSA, RSASHA256, RSASHA512 or DH (Diffie Hellman). 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.

-l label

  Specifies the label of keys in the crypto hardware (PKCS#11 device).

-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 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 flag is KSK (Key Signing Key) DNSKEY.

-h

  Prints a short summary of the options and arguments to `dnssec-keygen`.

-k

  Generate KEY records rather than DNSKEY records.

-p protocol

  Sets the protocol value for the generated 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.

## 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