dgst

 

---

 DGST(1)                      OpenSSL                      DGST(1)
 
 
 
 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 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.
 
        -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...
            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.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 7/Sep/2000                    0.9.6b                      DGST(1)

---