Latest update.

doc/man1/openssl-dgst.pod

@@ -6,7 +6,7 @@ openssl-dgst - perform digest operations
 
 =head1 SYNOPSIS
 
-B<openssl dgst>
+B<openssl> B<dgst>|I<digest>
 [B<-I<digest>>]
 [B<-help>]
 [B<-c>]
@@ -14,35 +14,33 @@ B<openssl dgst>
 [B<-hex>]
 [B<-binary>]
 [B<-r>]
-[B<-out filename>]
-[B<-sign filename>]
-[B<-keyform arg>]
-[B<-passin arg>]
-[B<-verify filename>]
-[B<-prverify filename>]
-[B<-signature filename>]
-[B<-sigopt nm:v>]
-[B<-hmac key>]
+[B<-out> I<filename>]
+[B<-sign> I<filename>]
+[B<-keyform> I<arg>]
+[B<-passin> I<arg>]
+[B<-verify> I<filename>]
+[B<-prverify> I<filename>]
+[B<-signature> I<filename>]
+[B<-sigopt> I<nm>:I<v>]
+[B<-hmac> I<key>]
 [B<-fips-fingerprint>]
-[B<-rand file...>]
-[B<-engine id>]
+[B<-rand> I<files>]
+[B<-writerand> I<file>]
+[B<-engine> I<id>]
 [B<-engine_impl>]
-[B<file...>]
-
-B<openssl> I<digest> [B<...>]
+[I<file> ...]
 
 =head1 DESCRIPTION
 
-The digest functions output the message digest of a supplied file or files
-in hexadecimal.  The digest functions also generate and verify digital
+This command output the message digest of a supplied file or files
+in hexadecimal, and also generates and verifies digital
 signatures using message digests.
 
-The generic name, B<dgst>, may be used with an option specifying the
+The generic name, B<openssl dgst>, may be used with an option specifying the
 algorithm to be used.
-The default digest is I<sha256>.
-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.
+The default digest is B<sha256>.
+A supported I<digest> name may also be used as the sub-command name.
+To see the list of supported algorithms, use C<openssl list -digest-commands>
 
 =head1 OPTIONS
 
@@ -55,12 +53,12 @@ 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>.
+supported digests, use the command C<list --digest-commands>.
 
 =item B<-c>
 
 Print out the digest in two digit groups separated by colons, only relevant if
-B<hex> format output is used.
+the B<-hex> option is given as well.
 
 =item B<-d>
 
@@ -79,78 +77,78 @@ Output the digest or signature in binary form.
 =item B<-r>
 
 Output the digest in the "coreutils" format, including newlines.
-Used by programs like B<sha1sum>.
+Used by programs like L<sha1sum(1)>.
 
-=item B<-out filename>
+=item B<-out> I<filename>
 
 Filename to output to, or standard output by default.
 
-=item B<-sign filename>
+=item B<-sign> I<filename>
 
 Digitally sign the digest using the private key in "filename". Note this option
-does not support Ed25519 or Ed448 private keys. Use the B<pkeyutl> command
-instead for this.
+does not support Ed25519 or Ed448 private keys. Use the L<openssl-pkeyutl(1)>
+command instead for this.
 
-=item B<-keyform arg>
+=item B<-keyform> I<arg>
 
 Specifies the key format to sign digest with. The DER, PEM, P12,
 and ENGINE formats are supported.
 
-=item B<-sigopt nm:v>
+=item B<-sigopt> I<nm>:I<v>
 
 Pass options to the signature algorithm during sign or verify operations.
 Names and values of these options are algorithm-specific.
 
-=item B<-passin arg>
+=item B<-passin> I<arg>
 
-The private key password source. For more information about the format of B<arg>
-see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)>.
+The private key password source. For more information about the format of I<arg>
+see L<openssl(1)/Pass Phrase Options>.
 
-=item B<-verify filename>
+=item B<-verify> I<filename>
 
 Verify the signature using the public key in "filename".
 The output is either "Verification OK" or "Verification Failure".
 
-=item B<-prverify filename>
+=item B<-prverify> I<filename>
 
 Verify the signature using the private key in "filename".
 
-=item B<-signature filename>
+=item B<-signature> I<filename>
 
 The actual signature to verify.
 
-=item B<-hmac key>
+=item B<-hmac> I<key>
 
 Create a hashed MAC using "key".
 
 The L<openssl-mac(1)> command should be preferred to using this command line
 option.
 
-=item B<-mac alg>
+=item B<-mac> I<alg>
 
 Create MAC (keyed Message Authentication Code). The most popular MAC
 algorithm is HMAC (hash-based MAC), but there are other MAC algorithms
 which are not based on hash, for instance B<gost-mac> algorithm,
-supported by B<ccgost> engine. MAC keys and other options should be set
+supported by the B<gost> engine. MAC keys and other options should be set
 via B<-macopt> parameter.
 
 The L<openssl-mac(1)> command should be preferred to using this command line
 option.
 
-=item B<-macopt nm:v>
+=item B<-macopt> I<nm>:I<v>
 
 Passes options to MAC algorithm, specified by B<-mac> key.
 Following options are supported by both by B<HMAC> and B<gost-mac>:
 
 =over 4
 
-=item B<key:string>
+=item B<key>:I<string>
 
 Specifies MAC key as alphanumeric string (use if key contain printable
 characters only). String length must conform to any restrictions of
 the MAC algorithm for example exactly 32 chars for gost-mac.
 
-=item B<hexkey:string>
+=item B<hexkey>:I<string>
 
 Specifies MAC key in hexadecimal form (two hex digits per byte).
 Key length must conform to any restrictions of the MAC algorithm
@@ -161,26 +159,17 @@ for example exactly 32 chars for gost-mac.
 The L<openssl-mac(1)> command should be preferred to using this command line
 option.
 
-=item B<-rand file...>
+=item B<-rand> I<files>, B<-writerand> I<file>
 
-A file or files containing random data used to seed the random number
-generator.
-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.
-
-=item [B<-writerand file>]
-
-Writes random data to the specified I<file> upon exit.
-This can be used with a subsequent B<-rand> flag.
+See L<openssl(1)/Random State Options> for more information.
 
 =item B<-fips-fingerprint>
 
 Compute HMAC using a specific key for certain OpenSSL-FIPS operations.
 
-=item B<-engine id>
+=item B<-engine> I<id>
 
-Use engine B<id> for operations (including private key storage).
+Use engine I<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.
@@ -188,9 +177,9 @@ specified.
 =item B<-engine_impl>
 
 When used with the B<-engine> option, it specifies to also use
-engine B<id> for digest operations.
+engine I<id> for digest operations.
 
-=item B<file...>
+=item I<file> ...
 
 File or files to digest. If no files are specified then standard input is
 used.
@@ -216,13 +205,13 @@ To verify a signature:
 
 The digest mechanisms that are available will depend on the options
 used when building OpenSSL.
-The B<list digest-commands> command can be used to list them.
+The C<openssl list -digest-commands> command can be used to list them.
 
 New or agile applications should use probably use SHA-256. Other digests,
 particularly SHA-1 and MD5, are still widely used for interoperating
 with existing formats and protocols.
 
-When signing a file, B<dgst> will automatically determine the algorithm
+When signing a file, this command will automatically determine the algorithm
 (RSA, ECC, etc) to use for signing based on the private key's ASN.1 info.
 When verifying signatures, it only handles the RSA, DSA, or ECDSA signature
 itself, not the related data to identify the signer and algorithm used in