Added a counter mode wrapper plugin operating on existing CBC crypters

configure.in

@@ -147,6 +147,7 @@ ARG_ENABL_SET([openssl],        [enables the OpenSSL crypto plugin.])
 ARG_ENABL_SET([gcrypt],         [enables the libgcrypt plugin.])
 ARG_ENABL_SET([agent],          [enables the ssh-agent signing plugin.])
 ARG_ENABL_SET([pkcs11],         [enables the PKCS11 token support plugin.])
+ARG_ENABL_SET([ctr],            [enables the Counter Mode wrapper crypto plugin.])
 ARG_ENABL_SET([addrblock],      [enables RFC 3779 address block constraint support.])
 ARG_ENABL_SET([uci],            [enable OpenWRT UCI configuration plugin.])
 ARG_ENABL_SET([android],        [enable Android specific plugin.])
@@ -714,6 +715,7 @@ ADD_PLUGIN([agent],                [s libcharon])
 ADD_PLUGIN([pkcs11],               [s libcharon pki])
 ADD_PLUGIN([xcbc],                 [s libcharon])
 ADD_PLUGIN([hmac],                 [s libcharon pluto])
+ADD_PLUGIN([ctr],                  [s libcharon])
 ADD_PLUGIN([xauth],                [p pluto])
 ADD_PLUGIN([attr],                 [h libcharon pluto])
 ADD_PLUGIN([attr-sql],             [h libcharon pluto])
@@ -805,6 +807,7 @@ AM_CONDITIONAL(USE_OPENSSL, test x$openssl = xtrue)
 AM_CONDITIONAL(USE_GCRYPT, test x$gcrypt = xtrue)
 AM_CONDITIONAL(USE_AGENT, test x$agent = xtrue)
 AM_CONDITIONAL(USE_PKCS11, test x$pkcs11 = xtrue)
+AM_CONDITIONAL(USE_CTR, test x$ctr = xtrue)
 
 dnl charon plugins
 dnl ==============
@@ -936,6 +939,7 @@ AC_OUTPUT(
 	src/libstrongswan/plugins/gcrypt/Makefile
 	src/libstrongswan/plugins/agent/Makefile
 	src/libstrongswan/plugins/pkcs11/Makefile
+	src/libstrongswan/plugins/ctr/Makefile
 	src/libstrongswan/plugins/test_vectors/Makefile
 	src/libhydra/Makefile
 	src/libhydra/plugins/attr/Makefile