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DGST(1)				    OpenSSL			       DGST(1)

       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] [-passin arg]
       [-verify	filename] [-prverify filename] [-signature filename] [-hmac
       key] [file...]

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

       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.

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

       -d  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.

       -out filename
	   filename to output to, or standard output by	default.

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

       -passin arg
	   the private key password source. For	more information about the
	   format of arg see the PASS PHRASE ARGUMENTS section in openssl(1).

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

       -prverify filename
	   verify the signature	using the  the private key in "filename".

       -signature filename
	   the actual signature	to verify.

       -hmac key
	   create a hashed MAC using "key".

       -rand file(s)
	   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 a OS-dependent character.  The
	   separator 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.

0.9.8y				  2013-02-05			       DGST(1)


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