--- a/mycrypt_custom.h	Mon May 31 18:25:41 2004 +0000
+++ b/mycrypt_custom.h	Tue Jun 15 14:07:21 2004 +0000
@@ -9,14 +9,27 @@
 	#error mycrypt_custom.h should be included before mycrypt.h
 #endif
 
+/* macros for various libc functions */
 #define XMALLOC malloc
 #define XREALLOC realloc
 #define XCALLOC calloc
 #define XFREE free
 #define XCLOCK clock
 #define XCLOCKS_PER_SEC CLOCKS_PER_SEC
+
+/* Use small code where possible */
 #define SMALL_CODE
+
+/* Enable self-test test vector checking */
 #define LTC_TEST
+
+/* clean the stack of functions which put private information on stack */
+//#define CLEAN_STACK
+
+/* disable all file related functions */
+//#define NO_FILE
+
+/* various ciphers */
 #define BLOWFISH
 #define RC2
 #define RC5
@@ -26,15 +39,21 @@
 #define XTEA
 #define TWOFISH
 #define TWOFISH_TABLES
+//#define TWOFISH_ALL_TABLES
+//#define TWOFISH_SMALL
 #define DES
 #define CAST5
 #define NOEKEON
 #define SKIPJACK
+
+/* modes of operation */
 #define CFB
 #define OFB
 #define ECB
 #define CBC
 #define CTR
+
+/* hash functions */
 #define WHIRLPOOL
 #define SHA512
 #define SHA384
@@ -47,18 +66,30 @@
 #define MD2
 #define RIPEMD128
 #define RIPEMD160
+
+/* MAC functions */
 #define HMAC
 #define OMAC
 #define PMAC
+
+/* Encrypt + Authenticate Modes */
 #define EAX_MODE
 #define OCB_MODE
+
+/* Various tidbits of modern neatoness */
 #define BASE64
 #define YARROW
+// which descriptor of AES to use? 
+// 0 = rijndael_enc 1 = aes_enc, 2 = rijndael [full], 3 = aes [full]
+#define YARROW_AES 0
 #define SPRNG
 #define RC4
 #define DEVRANDOM
 #define TRY_URANDOM_FIRST
+
+/* Public Key Neatoness */
 #define MRSA
+#define RSA_TIMING                   // enable RSA side channel timing prevention 
 #define MDSA
 #define MDH
 #define MECC
@@ -79,10 +110,10 @@
 #define ECC521
 #define MPI
 
+/* PKCS #1 and 5 stuff */
 #define PKCS_1
 #define PKCS_5
 
-
 #include <mycrypt.h>
 
 #endif