openssl_dgst(1) - NetBSD Manual Pages

DGST(1)                      OpenSSL                      DGST(1)



NAME

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


LIBRARY

       libcrypto, -lcrypto


SYNOPSIS

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

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


DESCRIPTION

       The digest functions output the message digest of a sup-
       plied file or files in 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 if hex 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.




2001-04-12                    0.9.6g                            1





DGST(1)                      OpenSSL                      DGST(1)


       -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 sepa-
           rated by a OS-dependent character.  The separator is ;
           for MS-Windows, , for OpenVMS, and : for all others.

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


NOTES

       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.


































2001-04-12                    0.9.6g                            2