2 files changed, 135 insertions, 14 deletions
diff --git a/openssl/doc/apps/c_rehash.pod b/openssl/doc/apps/c_rehash.pod
new file mode 100644
index 000000000..c564e8631
--- /dev/null
+++ b/openssl/doc/apps/c_rehash.pod
@@ -0,0 +1,81 @@
+=pod
+
+=for comment
+Original text by James Westby, contributed under the OpenSSL license.
+
+=head1 NAME
+
+c_rehash - Create symbolic links to files named by the hash values
+
+=head1 SYNOPSIS
+
+B<c_rehash>
+[ I<directory>...]
+
+=head1 DESCRIPTION
+
+B<c_rehash> scans directories and calculates a hash value of each C<.pem>
+file in the specified directory list and creates symbolic links
+for each file, where the name of the link is the hash value.
+This utility is useful as many programs that use OpenSSL require
+directories to be set up like this in order to find certificates.
+
+If any directories are named on the command line, then those are
+processed in turn. If not, then the B<SSL_CERT_DIR> environment variable
+is consulted; this shold be a colon-separated list of directories,
+like the Unix B<PATH> variable.
+If that is not set then the default directory (installation-specific
+but often B</usr/local/ssl/certs>) is processed.
+
+In order for a directory to be processed, the user must have write
+permissions on that directory, otherwise it will be skipped.
+The links created are of the form C<HHHHHHHH.D>, where each B<H>
+is a hexadecimal character and B<D> is a single decimal digit.
+When processing a directory, B<c_rehash> will first remove all links
+that have a name in that syntax. If you have links in that format
+used for other purposes, they will be removed.
+Hashes for CRL's look similar except the letter B<r> appears after
+the period, like this: C<HHHHHHHH.rD>.
+
+Multiple objects may have the same hash; they will be indicated by
+incrementing the B<D> value. Duplicates are found by comparing the
+full SHA-1 fingerprint. A warning will be displayed if a duplicate
+is found.
+
+A warning will also be displayed if there are B<.pem> files that
+cannot be parsed as either a certificate or a CRL.
+
+The program uses the B<openssl> program to compute the hashes and
+fingerprints. If not found in the user's B<PATH>, then set the
+B<OPENSSL> environment variable to the full pathname.
+Any program can be used, it will be invoked as follows for either
+a certificate or CRL:
+
+  $OPENSSL x509 -hash -fingerprint -noout -in FFFFFF
+  $OPENSSL crl -hash -fingerprint -noout -in FFFFFF
+
+where B<FFFFFF> is the filename. It must output the hash of the
+file on the first line, and the fingerprint on the second,
+optionally prefixed with some text and an equals sign.
+
+=head1 ENVIRONMENT
+
+=over
+
+=item B<OPENSSL>
+
+The path to an executable to use to generate hashes and
+fingerprints (see above).
+
+=item B<SSL_CERT_DIR>
+
+Colon separated list of directories to operate on.
+Ignored if directories are listed on the command line.
+
+=back
+
+=head1 SEE ALSO
+
+L<openssl(1)|openssl(1)>,
+L<crl(1)|crl(1)>.
+L<x509(1)|x509(1)>.
diff --git a/openssl/doc/apps/dgst.pod b/openssl/doc/apps/dgst.pod
index b035edf08..2414c5337 100644
--- a/openssl/doc/apps/dgst.pod
+++ b/openssl/doc/apps/dgst.pod
@@ -2,16 +2,17 @@
 
 =head1 NAME
 
-dgst, md5, md4, md2, sha1, sha, mdc2, ripemd160 - message digests
+dgst, sha, sha1, mdc2, ripemd160, sha224, sha256, sha384, sha512, md2, md4, md5, dss1 - message digests
 
 =head1 SYNOPSIS
 
 B<openssl> B<dgst> 
-[B<-md5|-md4|-md2|-sha1|-sha|-mdc2|-ripemd160|-dss1>]
+[B<-sha|-sha1|-mdc2|-ripemd160|-sha224|-sha256|-sha384|-sha512|-md2|-md4|-md5|-dss1>]
 [B<-c>]
 [B<-d>]
 [B<-hex>]
 [B<-binary>]
+[B<-r>]
 [B<-out filename>]
 [B<-sign filename>]
 [B<-keyform arg>]
@@ -20,17 +21,19 @@ B<openssl> B<dgst>
 [B<-prverify filename>]
 [B<-signature filename>]
 [B<-hmac key>]
+[B<-non-fips-allow>]
+[B<-fips-fingerprint>]
 [B<file...>]
 
-[B<md5|md4|md2|sha1|sha|mdc2|ripemd160>]
-[B<-c>]
-[B<-d>]
-[B<file...>]
+B<openssl>
+[I<digest>]
+[B<...>]
 
 =head1 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.
+in hexadecimal.  The digest functions also generate and verify digital
+signatures using message digests.
 
 =head1 OPTIONS
 
@@ -48,12 +51,17 @@ print out BIO debugging information.
 =item B<-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.
+digest as opposed to a digital signature.  See NOTES below for digital
+signatures using B<-hex>.
 
 =item B<-binary>
 
 output the digest or signature in binary form.
 
+=item B<-r>
+
+output the digest in the "coreutils" format used by programs like B<sha1sum>.
+
 =item B<-out filename>
 
 filename to output to, or standard output by default.
@@ -64,8 +72,8 @@ digitally sign the digest using the private key in "filename".
 
 =item B<-keyform arg>
 
-Specifies the key format to sign digest with. Only PEM and ENGINE
-formats are supported by the B<dgst> command.
+Specifies the key format to sign digest with. The DER, PEM, P12,
+and ENGINE formats are supported.
 
 =item B<-engine id>
 
@@ -117,7 +125,7 @@ Following options are supported by both by B<HMAC> and B<gost-mac>:
 =over 8
 
 =item B<key:string>
-	
+
 Specifies MAC key as alphnumeric 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.
@@ -138,6 +146,15 @@ Multiple files can be specified separated by a OS-dependent character.
 The separator is B<;> for MS-Windows, B<,> for OpenVMS, and B<:> for
 all others. 
 
+=item B<-non-fips-allow>
+
+enable use of non-FIPS algorithms such as MD5 even in FIPS mode.
+
+=item B<-fips-fingerprint>
+
+compute HMAC using a specific key
+for certain OpenSSL-FIPS operations.
+
 =item B<file...>
 
 file or files to digest. If no files are specified then standard input is
@@ -145,18 +162,41 @@ used.
 
 =back
 
+
+=head1 EXAMPLES
+
+To create a hex-encoded message digest of a file:
+ openssl dgst -md5 -hex file.txt
+
+To sign a file using SHA-256 with binary file output:
+ openssl dgst -sha256 -sign privatekey.pem -out signature.sign file.txt
+
+To verify a signature:
+ openssl dgst -sha256 -verify publickey.pem \
+ -signature signature.sign \
+ file.txt
+
+
 =head1 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.
+When signing a file, B<dgst> 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
+formats such as x.509, CMS, and S/MIME.
 
 A source of random numbers is required for certain signing algorithms, in
-particular DSA.
+particular ECDSA and DSA.
 
 The signing and verify options should only be used if a single file is
 being signed or verified.
 
+Hex signatures cannot be verified using B<openssl>.  Instead, use "xxd -r"
+or similar program to transform the hex signature into a binary signature
+prior to verification.
+
+
 =cut