openssl-spkac(1), spkac(1) - SPKAC printing and generating utility



  • SPKAC(1)			    OpenSSL			      SPKAC(1)
    
    
    
    NAME
           openssl-spkac, spkac - SPKAC printing and generating utility
    
    SYNOPSIS
           openssl spkac [-help] [-in filename] [-out filename] [-key keyfile]
           [-keyform PEM|DER|ENGINE] [-passin arg] [-challenge string] [-pubkey]
           [-spkac spkacname] [-spksect section] [-noout] [-verify] [-engine id]
    
    DESCRIPTION
           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.
    
    OPTIONS
           -help
    	   Print out a usage message.
    
           -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
    	   default.
    
           -key keyfile
    	   Create an SPKAC file using the private key in keyfile. The -in,
    	   -noout, -spksect and -verify options are ignored if present.
    
           -keyform PEM|DER|ENGINE
    	   Whether the key format is PEM, DER, or an engine-backed key.	 The
    	   default is PEM.
    
           -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.
    
           -noout
    	   Don't output the text version of the SPKAC (not used if an SPKAC is
    	   being created).
    
           -pubkey
    	   Output the public key of an SPKAC (not used if an SPKAC is being
    	   created).
    
           -verify
    	   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.
    
    EXAMPLES
           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):
    
    	SPKAC=MIG5MGUwXDANBgkqhkiG9w0BAQEFAANLADBIAkEA\
    	1cCoq2Wa3Ixs47uI7FPVwHVIPDx5yso105Y6zpozam135a\
    	8R0CpoRvkkigIyXfcCjiVi5oWk+6FfPaD03uPFoQIDAQAB\
    	FgVoZWxsbzANBgkqhkiG9w0BAQQFAANBAFpQtY/FojdwkJ\
    	h1bEIYuc2EeM2KHTWPEepWYeawvHD0gQ3DngSC75YCWnnD\
    	dq+NQ3F+X4deMx9AaEglZtULwV4=
    
    NOTES
           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
           process.
    
           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".
    
    SEE ALSO
           ca(1)
    
    COPYRIGHT
           Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.
    
           Licensed under the OpenSSL license (the "License").  You may not use
           this file except in compliance with the License.	 You can obtain a copy
           in the file LICENSE in the source distribution or at
           <https://www.openssl.org/source/license.html>.
    
    
    
    1.1.1				  2018-09-11			      SPKAC(1)
    

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