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.. Set up some character translations and predefined strings. \*(-- will
give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
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give a nicer C++. Capital omega is used to do unbreakable dashes and
therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
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.tr \(*W- . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\}
Escape single quotes in literal strings from groff's Unicode transform.

If the F register is turned on, we'll generate index entries on stderr for
titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
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output yourself in some meaningful fashion.

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.. .nr rF 0 . if \nF \{ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{ . nr % 0 . nr F 2 . \} . \} .\} .rr rF
Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
Fear. Run. Save yourself. No user-serviceable parts.
. \" fudge factors for nroff and troff . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] .\} . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents . \" corrections for vroff . \" for low resolution devices (crt and lpr) \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} ========================================================================

Title "DGST 1" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
dgst, md5, md4, md2, sha1, sha, mdc2, ripemd160 - message digests Header "SYNOPSIS" \fBopenssl 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...]

Header "DESCRIPTION" 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. Header "OPTIONS" Item "-c" print out the digest in two digit groups separated by colons, only relevant if \fBhex format output is used. Item "-d" print out \s-1BIO\s0 debugging information. Item "-hex" digest is to be output as a hex dump. This is the default case for a \*(L"normal\*(R" digest as opposed to a digital signature. Item "-binary" output the digest or signature in binary form. Item "-out filename" filename to output to, or standard output by default. Item "-sign filename" digitally sign the digest using the private key in \*(L"filename\*(R". Item "-passin arg" the private key password source. For more information about the format of arg see the \s-1PASS PHRASE ARGUMENTS\s0 section in openssl\|(1). Item "-verify filename" verify the signature using the public key in \*(L"filename\*(R". The output is either \*(L"Verification \s-1OK\*(R"\s0 or \*(L"Verification Failure\*(R". Item "-prverify filename" verify the signature using the the private key in \*(L"filename\*(R". Item "-signature filename" the actual signature to verify. Item "-hmac key" create a hashed \s-1MAC\s0 using \*(L"key\*(R". Item "-rand file(s)" a file or files containing random data used to seed the random number generator, or an \s-1EGD\s0 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. Item "file..." file or files to digest. If no files are specified then standard input is used. Header "NOTES" The digest of choice for all new applications is \s-1SHA1.\s0 Other digests are however still widely used.

If you wish to sign or verify data using the \s-1DSA\s0 algorithm then the dss1 digest must be used.

A source of random numbers is required for certain signing algorithms, in particular \s-1DSA.\s0

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