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ssl_spkac ()
  • >> ssl_spkac (1) ( Разные man: Команды и прикладные программы пользовательского уровня )
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    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)


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    COMMAND OPTIONS
    EXAMPLES
    NOTES
    SEE ALSO


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