MAN page from Trustix openssl-0.9.7e-8tr.i586.rpm
DGST
Section: OpenSSL (1)
Updated: 2000-09-04
Index NAME
dgst, md5, md4, md2, sha1, sha, mdc2, ripemd160 - message digests
SYNOPSIS
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][file...]
DESCRIPTION
The digest functions output the message digest of a supplied file or filesin hexadecimal form. They can also be used for digital signing and verification.
OPTIONS
- -c
- print out the digest in two digit groups separated by colons, only relevant ifhex format output is used.
- -d
- print out BIO debugging information.
- -hex
- digest is to be output as a hex dump. This is the default case for a ``normal''digest as opposed to a digital signature.
- -binary
- 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''.
- -verify filename
- verify the signature using the 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.
- -rand file(s)
- a file or files containing random data used to seed the random numbergenerator, 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 : forall others.
- file...
- file or files to digest. If no files are specified then standard input isused.
NOTES
The digest of choice for all new applications is
SHA1. Other digests arehowever still widely used.
If you wish to sign or verify data using the DSA algorithm then the dss1digest must be used.
A source of random numbers is required for certain signing algorithms, inparticular DSA.
The signing and verify options should only be used if a single file isbeing signed or verified.
Index
- NAME
- SYNOPSIS
- DESCRIPTION
- OPTIONS
- NOTES
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