CI_Encryption: Remove MCrypt 'work-arounds' for CAST-128 compatibility
Turns out it's OpenSSL's fault for performing 16 rounds instead of 12 for key sizes of 5-11 bytes.
Reference: http://tools.ietf.org/rfc/rfc2144.txt
diff --git a/user_guide_src/source/libraries/encryption.rst b/user_guide_src/source/libraries/encryption.rst
index cedc8d3..25bf7c1 100644
--- a/user_guide_src/source/libraries/encryption.rst
+++ b/user_guide_src/source/libraries/encryption.rst
@@ -133,7 +133,7 @@
DES des 56 / 7 CBC, CFB, CFB8, OFB, ECB
TripleDES tripledes 56 / 7, 112 / 14, 168 / 21 CBC, CFB, CFB8, OFB
Blowfish blowfish 128-448 / 16-56 CBC, CFB, OFB, ECB
-CAST5 / CAST-128 cast5 40-128 / 5-16 CBC, CFB, OFB, ECB
+CAST5 / CAST-128 cast5 88-128 / 11-16 CBC, CFB, OFB, ECB
RC4 / ARCFour rc4 40-2048 / 5-256 Stream
======================== ================== ============================ ===============================
@@ -176,6 +176,7 @@
Rijndael-256 MCrypt 128 / 16, 192 / 24, 256 / 32 CBC, CTR, CFB, CFB8, OFB, OFB8, ECB
GOST MCrypt 256 / 32 CBC, CTR, CFB, CFB8, OFB, OFB8, ECB
Twofish MCrypt 128 / 16, 192 / 24, 256 / 32 CBC, CTR, CFB, CFB8, OFB, OFB8, ECB
+CAST-128 MCrypt 40-128 / 5-16 CBC, CTR, CFB, CFB8, OFB, OFB8, ECB
CAST-256 MCrypt 128 / 16, 192 / 24, 256 / 32 CBC, CTR, CFB, CFB8, OFB, OFB8, ECB
Loki97 MCrypt 128 / 16, 192 / 24, 256 / 32 CBC, CTR, CFB, CFB8, OFB, OFB8, ECB
SaferPlus MCrypt 128 / 16, 192 / 24, 256 / 32 CBC, CTR, CFB, CFB8, OFB, OFB8, ECB
@@ -198,6 +199,11 @@
important to note that AES-128 and Rijndael-128 are actually
the same cipher, but **only** when used with a 128-bit key.
+.. note:: CAST-128 / CAST-5 is also listed in both the portable and
+ driver-specific ciphers list. This is because OpenSSL's
+ implementation doesn't appear to be working correctly with
+ key sizes of 80 bits and lower.
+
.. note:: RC2 is listed as supported by both MCrypt and OpenSSL.
However, both drivers implement them differently and they
are not portable. It is probably worth noting that we only