Reconstruction of des.exe/undes.exe

third_party/cryptlib-0.99/rc4/rc4.h

@@ -0,0 +1,23 @@
+#include <limits.h>
+
+/* If the system can handle byte ops, we use those so we don't have to do a
+   lot of masking.  Otherwise, we use machine-word-size ops which will be
+   faster on RISC machines */
+
+#if UINT_MAX > 0xFFFFL		/* System has 32-bit ints */
+  #define USE_LONG_RC4
+
+  typedef unsigned int rc4word;
+#else
+  typedef unsigned char rc4word;
+#endif /* UINT_MAX > 0xFFFFL */
+
+/* The scheduled RC4 key */
+
+typedef struct {
+	rc4word state[ 256 ];
+	rc4word x, y;
+	} RC4KEY ;
+
+void rc4ExpandKey( RC4KEY *rc4, unsigned char const *key, int keylen );
+void rc4Crypt( RC4KEY *rc4, unsigned char *data, int len );