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dgst(1ssl)							    dgst(1ssl)

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

       openssl	dgst  [-md5 | -md4 | -md2 |-sha1 | -sha | -mdc2 | -ripemd160 |
       -dss1] [-c] [-d] [-hex]	[-binary]  [-out  filename]  [-sign  filename]
       [-verify filename] [-prverify filename] [-signature filename] [file..]

       [-md5  |	 -md4  |  -md2	| -sha1 | -sha | -mdc2 | -ripemd160] [-c] [-d]

       Prints out the digest in two digit groups  separated  by	 colons,  only
       relevant if hex format output is used.  Prints out BIO debugging inforā€
       mation.	Digest is to be output as a hex dump. This is the default case
       for  a  typical	digest as opposed to a digital signature.  Outputs the
       digest or signature in binary form.  Filename to output to, or standard
       output by default.  Digitally signs the digest using the private key in
       filename.  Verifies the signature using the public key in filename. The
       output is either Verification OK or Verification Failure.  Verifies the
       signature using the private key in filename.  The actual	 signature  to
       verify.	A file or files containing random data used to seed the random
       number generator, or an EGD socket. (See RAND_egd(3).)  Multiple	 files
       can  be specified separated by an OS-dependent character. The separator
       is a semicolon (;) for MS-Windows, a comma (,) for OpenVMS, and a colon
       (:) for all others.  File or files to digest. If no files are specified
       then standard input is used.

       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.

       The digest of choice for all new applications is SHA1.  However,	 other
       digests are 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.


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