=head1 NAME
-dgst, sha, sha1, mdc2, ripemd160, sha224, sha256, sha384, sha512, md4, md5 - message digests
+dgst, sha, sha1, mdc2, ripemd160, sha224, sha256, sha384, sha512, md4, md5, blake2b, blake2s - message digests
=head1 SYNOPSIS
-B<openssl> B<dgst>
+B<openssl> B<dgst>
[B<-help>]
-[B<-sha|-sha1|-mdc2|-ripemd160|-sha224|-sha256|-sha384|-sha512|-md4|-md5>]
+[B<-I<digest>>]
[B<-c>]
[B<-d>]
[B<-hex>]
[B<-signature filename>]
[B<-hmac key>]
[B<-fips-fingerprint>]
+[B<-engine id>]
+[B<-engine_impl>]
[B<file...>]
B<openssl>
The generic name, B<dgst>, may be used with an option specifying the
algorithm to be used.
The default digest is I<sha256>.
-The digest name may also be used as the command name.
-To see the list of supported algorithms, use the <Ilist --digest-commands>
+A supported I<digest> name may also be used as the command name.
+To see the list of supported algorithms, use the I<list --digest-commands>
command.
=head1 OPTIONS
Print out a usage message.
+=item B<-I<digest>>
+
+Specifies name of a supported digest to be used. To see the list of
+supported digests, use the command I<list --digest-commands>.
+
=item B<-c>
print out the digest in two digit groups separated by colons, only relevant if
Specifies the key format to sign digest with. The DER, PEM, P12,
and ENGINE formats are supported.
-=item B<-engine id>
-
-Use engine B<id> for operations (including private key storage).
-This engine is not used as source for digest algorithms, unless it is
-also specified in the configuration file.
-
=item B<-sigopt nm:v>
Pass options to the signature algorithm during sign or verify operations.
=item B<-verify filename>
-verify the signature using the the public key in "filename".
+verify the signature using the public key in "filename".
The output is either "Verification OK" or "Verification Failure".
=item B<-prverify filename>
-verify the signature using the the private key in "filename".
+verify the signature using the private key in "filename".
=item B<-signature filename>
a file or files containing random data used to seed the random number
generator, or an EGD socket (see L<RAND_egd(3)>).
-Multiple files can be specified separated by a OS-dependent character.
+Multiple files can be specified separated by an OS-dependent character.
The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
-all others.
+all others.
=item B<-fips-fingerprint>
compute HMAC using a specific key
for certain OpenSSL-FIPS operations.
+=item B<-engine id>
+
+Use engine B<id> for operations (including private key storage).
+This engine is not used as source for digest algorithms, unless it is
+also specified in the configuration file or B<-engine_impl> is also
+specified.
+
+=item B<-engine_impl>
+
+When used with the B<-engine> option, it specifies to also use
+engine B<id> for digest operations.
+
=item B<file...>
file or files to digest. If no files are specified then standard input is
=head1 HISTORY
-The default digest was changed from MD5 to SHA256 in Openssl 1.1.
-The FIPS-related options were removed in OpenSSL 1.1
+The default digest was changed from MD5 to SHA256 in OpenSSL 1.1.0
+The FIPS-related options were removed in OpenSSL 1.1.0
+
+=head1 COPYRIGHT
+
+Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the OpenSSL license (the "License"). You may not use
+this file except in compliance with the License. You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
=cut