spkac

 

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 SPKAC(1)                     OpenSSL                     SPKAC(1)
 
 
 
 NAME
        spkac - SPKAC printing and generating utility
 
 SYNOPSIS
        openssl spkac [-in filename] [-out filename] [-key
        keyfile] [-passin arg] [-challenge string] [-pubkey]
        [-spkac spkacname] [-spksect section] [-noout] [-verify]
 
 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.
 
 COMMAND OPTIONS
        -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.
 
        -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.
 
 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=MIG5MGUwXDANBgkqhkiG9w0BAQEFAANLADBIAkEA1cCoq2Wa3Ixs47uI7F\
         PVwHVIPDx5yso105Y6zpozam135a8R0CpoRvkkigIyXfcCjiVi5oWk+6FfPaD03u\
         PFoQIDAQABFgVoZWxsbzANBgkqhkiG9w0BAQQFAANBAFpQtY/FojdwkJh1bEIYuc\
         2EeM2KHTWPEepWYeawvHD0gQ3DngSC75YCWnnDdq+NQ3F+X4deMx9AaEglZtULwV\
         4=
 
 
 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)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 16/Feb/2000                   0.9.6b                     SPKAC(1)

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