=pod
+=for comment openssl_manual_section:7
+
=head1 NAME
-Modes of DES - the variants of DES and other crypto algorithms of OpenSSL
+des_modes - the variants of DES and other crypto algorithms of OpenSSL
=head1 DESCRIPTION
=item *
If the first and last key are the same, the key length is 112 bits.
-There are attacks that could reduce the key space to 55 bit's but it
-requires 2^56 blocks of memory.
+There are attacks that could reduce the effective key strength
+to only slightly more than 56 bits, but these require a lot of memory.
=item *