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DGST(1)                             OpenSSL                            DGST(1)

       dgst, md5, md4, md2, sha1, sha, mdc2, ripemd160 - message digests

       ooppeennssssll ddggsstt [--mmdd55||--mmdd44||--mmdd22||--sshhaa11||--sshhaa||--mmddcc22||--rriippeemmdd116600||--ddssss11] [--cc]
       [--dd] [--hheexx] [--bbiinnaarryy] [--oouutt ffiilleennaammee] [--ssiiggnn ffiilleennaammee] [--vveerriiffyy ffiillee--
       nnaammee] [--pprrvveerriiffyy ffiilleennaammee] [--ssiiggnnaattuurree ffiilleennaammee] [ffiillee......]

       [mmdd55||mmdd44||mmdd22||sshhaa11||sshhaa||mmddcc22||rriippeemmdd116600] [--cc] [--dd] [ffiillee......]

       The digest functions output the message digest of a supplied file or
       files in hexadecimal form. They can also be used for digital signing
       and verification.

       --cc  print out the digest in two digit groups separated by colons, only
           relevant if hheexx format output is used.

       --dd  print out BIO debugging information.

           digest is to be output as a hex dump. This is the default case for
           a "normal" digest as opposed to a digital signature.

           output the digest or signature in binary form.

       --oouutt ffiilleennaammee
           filename to output to, or standard output by default.

       --ssiiggnn ffiilleennaammee
           digitally sign the digest using the private key in "filename".

       --vveerriiffyy ffiilleennaammee
           verify the signature using the the public key in "filename".  The
           output is either "Verification OK" or "Verification Failure".

       --pprrvveerriiffyy ffiilleennaammee
           verify the signature using the  the private key in "filename".

       --ssiiggnnaattuurree ffiilleennaammee
           the actual signature to verify.

       --rraanndd file((ss))
           a file or files containing random data used to seed the random num-
           ber generator, or an EGD socket (see RAND_egd(3)).  Multiple files
           can be specified separated by a OS-dependent character.  The sepa-
           rator is ;; for MS-Windows, ,, for OpenVMS, and :: for all others.

           file or files to digest. If no files are specified then standard
           input is used.

       The digest of choice for all new applications is SHA1. Other digests
       are however still widely used.

       If you wish to sign or verify data using the DSA algorithm then the
       dss1 digest must be used.

       A source of random numbers is required for certain signing algorithms,
       in particular DSA.

       The signing and verify options should only be used if a single file is
       being signed or verified.

3rd Berkeley Distribution           0.9.7a                             DGST(1)

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