spkac man page on Archlinux

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SPKAC(1)			    OpenSSL			      SPKAC(1)

       spkac - SPKAC printing and generating utility

       openssl spkac [-in filename] [-out filename] [-key keyfile] [-passin
       arg] [-challenge string] [-pubkey] [-spkac spkacname] [-spksect
       section] [-noout] [-verify] [-engine id]

       The spkac command processes Netscape signed public key and challenge
       (SPKAC) files. It can print out their contents, verify the signature
       and produce its own SPKACs from a supplied private key.

       -in filename
	   This specifies the input filename to read from or standard input if
	   this option is not specified. Ignored if the -key option is used.

       -out filename
	   specifies the output filename to write to or standard output by

       -key keyfile
	   create an SPKAC file using the private key in keyfile. The -in,
	   -noout, -spksect and -verify options are ignored if present.

       -passin password
	   the input file password source. For more information about the
	   format of arg see the PASS PHRASE ARGUMENTS section in openssl(1).

       -challenge string
	   specifies the challenge string if an SPKAC is being created.

       -spkac spkacname
	   allows an alternative name form the variable containing the SPKAC.
	   The default is "SPKAC". This option affects both generated and
	   input SPKAC files.

       -spksect section
	   allows an alternative name form the section containing the SPKAC.
	   The default is the default section.

	   don't output the text version of the SPKAC (not used if an SPKAC is
	   being created).

	   output the public key of an SPKAC (not used if an SPKAC is being

	   verifies the digital signature on the supplied SPKAC.

       -engine id
	   specifying an engine (by its unique id string) will cause spkac to
	   attempt to obtain a functional reference to the specified engine,
	   thus initialising it if needed. The engine will then be set as the
	   default for all available algorithms.

       Print out the contents of an SPKAC:

	openssl spkac -in spkac.cnf

       Verify the signature of an SPKAC:

	openssl spkac -in spkac.cnf -noout -verify

       Create an SPKAC using the challenge string "hello":

	openssl spkac -key key.pem -challenge hello -out spkac.cnf

       Example of an SPKAC, (long lines split up for clarity):


       A created SPKAC with suitable DN components appended can be fed into
       the ca utility.

       SPKACs are typically generated by Netscape when a form is submitted
       containing the KEYGEN tag as part of the certificate enrollment

       The challenge string permits a primitive form of proof of possession of
       private key. By checking the SPKAC signature and a random challenge
       string some guarantee is given that the user knows the private key
       corresponding to the public key being certified. This is important in
       some applications. Without this it is possible for a previous SPKAC to
       be used in a "replay attack".


1.0.1g				  2014-03-17			      SPKAC(1)

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