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ldns-dane(1)									     ldns-dane(1)

       ldns-dane - verify or create TLS authentication with DANE (RFC6698)

       ldns-dane [OPTIONS] verify name port
       ldns-dane [OPTIONS] -t tlsafile verify

       ldns-dane [OPTIONS] name port create
		 [ Certificate-usage [ Selector [ Matching-type ] ] ]

       ldns-dane -h
       ldns-dane -v

       In  the	first  form:  A  TLS  connection  to name:port is established.	The TLSA resource
       record(s) for name are used to authenticate the connection.

       In the second form: The TLSA record(s) are read from tlsafile and used to authenticate the
       TLS service they reference.

       In  the	third  form:  A TLS connection to name:port is established and used to create the
       TLSA resource record(s) that would authenticate the connection.	The parameters	for  TLSA
       rr creation are:

	      0      CA constraint
	      1      Service certificate constraint
	      2      Trust anchor assertion
	      3      Domain-issued certificate (default)

	      0      Full certificate (default)
	      1      SubjectPublicKeyInfo

	      0      No hash used
	      1      SHA-256 (default)
	      2      SHA-512

       In  stead  of numbers the first few letters of the value may be used.  Except for the hash
       algorithm name, where the full name must be specified.

       -4     TLS connect IPv4 only

       -6     TLS connect IPv6 only

       -a address
	      Don't try to resolve name, but connect to address instead.

	      This option may be given more than once.

       -b     print "name. TYPE52 \# size hexdata" form instead of TLSA presentation format.

       -c certfile
	      Do not TLS connect to name:port, but authenticate (or make TLSA  records)  for  the
	      certificate (chain) in certfile instead.

       -d     Assume  DNSSEC  validity	even when the TLSA records were acquired insecure or were

       -f CAfile
	      Use CAfile to validate. Default is /etc/pki/tls/certs/ca-bundle.trust.crt

       -h     Print short usage help

       -i     Interact after connecting.

       -k keyfile
	      Specify a file that contains a trusted DNSKEY or DS rr.  Key(s) are used when chas-
	      ing signatures (i.e. -S is given).

	      This option may be given more than once.

	      Alternatively,   if   -k	 is   not   specified,	 and   a   default  trust  anchor
	      (/var/lib/unbound/root.key) exists and contains a valid DNSKEY  or  DS  record,  it
	      will be used as the trust anchor.

       -n     Do not verify server name in certificate.

       -o offset
	      When  creating a "Trust anchor assertion" TLSA resource record, select the offsetth
	      certificate offset from the end of the validation chain. 0 means the last  certifi-
	      cate, 1 the one but last, 2 the second but last, etc.

	      When  offset  is	-1 (the default), the last certificate is used (like with 0) that
	      MUST be self-signed. This can help to make sure that  the  intended  (self  signed)
	      trust  anchor  is actually present in the server certificate chain (which is a DANE

       -p CApath
	      Use   certificates   in	the   CApath   directory   to	validate.   Default    is

       -s     When  creating TLSA resource records with the "CA Constraint" and the "Service Cer-
	      tificate Constraint" certificate usage, do not validate and assume PKIX is valid.

	      For "CA Constraint" this means that verification should end with a self-signed cer-

       -S     Chase signature(s) to a known key.

	      Without  this  option,  the  local  network is trusted to provide a DNSSEC resolver
	      (i.e. AD bit is checked).

       -t tlsafile
	      Read TLSA record(s) from tlsafile. When name and port are  also  given,  only  TLSA
	      records  that match the name, port and transport are used. Otherwise the owner name
	      of the TLSA record(s) will be used to determine name, port and transport.

       -u     Use UDP transport instead of TCP.

       -v     Show version and exit.

	      The file from which trusted keys are loaded  for	signature  chasing,  when  no  -k
	      option is given.


       Written by the ldns team as an example for ldns usage.

       Report bugs to ldns-team@nlnetlabs.nl.

       Copyright  (C)  2012 NLnet Labs. This is free software. There is NO warranty; not even for

					17 September 2012			     ldns-dane(1)
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