OpenSSL                                                  SPKAC(1)



NNNNAAAAMMMMEEEE
     spkac - SPKAC printing and generating utility

SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
     ooooppppeeeennnnssssssssllll ssssppppkkkkaaaacccc [----iiiinnnn ffffiiiilllleeeennnnaaaammmmeeee] [----oooouuuutttt ffffiiiilllleeeennnnaaaammmmeeee] [----kkkkeeeeyyyy kkkkeeeeyyyyffffiiiilllleeee]
     [----ppppaaaassssssssiiiinnnn aaaarrrrgggg] [----cccchhhhaaaalllllllleeeennnnggggeeee ssssttttrrrriiiinnnngggg] [----ppppuuuubbbbkkkkeeeeyyyy] [----ssssppppkkkkaaaacccc
     ssssppppkkkkaaaaccccnnnnaaaammmmeeee] [----ssssppppkkkksssseeeecccctttt sssseeeeccccttttiiiioooonnnn] [----nnnnoooooooouuuutttt] [----vvvveeeerrrriiiiffffyyyy]

DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
     The ssssppppkkkkaaaacccc 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.

CCCCOOOOMMMMMMMMAAAANNNNDDDD OOOOPPPPTTTTIIIIOOOONNNNSSSS
     -iiiinnnn ffffiiiilllleeeennnnaaaammmmeeee
         This specifies the input filename to read from or
         standard input if this option is not specified. Ignored
         if the ----kkkkeeeeyyyy option is used.

     -oooouuuutttt ffffiiiilllleeeennnnaaaammmmeeee
         specifies the output filename to write to or standard
         output by default.

     -kkkkeeeeyyyy kkkkeeeeyyyyffffiiiilllleeee
         create an SPKAC file using the private key in kkkkeeeeyyyyffffiiiilllleeee.
         The ----iiiinnnn, ----nnnnoooooooouuuutttt, ----ssssppppkkkksssseeeecccctttt and ----vvvveeeerrrriiiiffffyyyy options are
         ignored if present.

     -ppppaaaassssssssiiiinnnn ppppaaaasssssssswwwwoooorrrrdddd
         the input file password source. For more information
         about the format of aaaarrrrgggg see the PPPPAAAASSSSSSSS PPPPHHHHRRRRAAAASSSSEEEE AAAARRRRGGGGUUUUMMMMEEEENNNNTTTTSSSS
         section in openssl(1).

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

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

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

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





16/Feb/2000            Last change: 0.9.5a                      1






OpenSSL                                                  SPKAC(1)



     -ppppuuuubbbbkkkkeeeeyyyy
         output the public key of an SPKAC (not used if an SPKAC
         is being created).

     -vvvveeeerrrriiiiffffyyyy
         verifies the digital signature on the supplied SPKAC.

EEEEXXXXAAAAMMMMPPPPLLLLEEEESSSS
     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=


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

     SPKACs are typically generated by Netscape when a form is
     submitted containing the KKKKEEEEYYYYGGGGEEEENNNN 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".

SSSSEEEEEEEE AAAALLLLSSSSOOOO
     ca(1)








16/Feb/2000            Last change: 0.9.5a                      2






OpenSSL                                                  SPKAC(1)























































16/Feb/2000            Last change: 0.9.5a                      3