1 files changed, 135 insertions, 0 deletions

diff --git a/src/lib/libcrypto/rc4/rc4_enc.c b/src/lib/libcrypto/rc4/rc4_enc.c
new file mode 100644
index 0000000000..ab8a111b52
--- /dev/null
+++ b/src/lib/libcrypto/rc4/rc4_enc.c
@@ -0,0 +1,135 @@
+/* crypto/rc4/rc4_enc.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include "rc4.h"
+#include "rc4_locl.h"
+
+/* RC4 as implemented from a posting from
+ * Newsgroups: sci.crypt
+ * From: sterndark@netcom.com (David Sterndark)
+ * Subject: RC4 Algorithm revealed.
+ * Message-ID: <sternCvKL4B.Hyy@netcom.com>
+ * Date: Wed, 14 Sep 1994 06:35:31 GMT
+ */
+
+void RC4(key, len, indata, outdata)
+RC4_KEY *key;
+unsigned long len;
+unsigned char *indata;
+unsigned char *outdata;
+        {
+        register RC4_INT *d;
+        register RC4_INT x,y,tx,ty;
+        int i;
+        
+        x=key->x;     
+        y=key->y;     
+        d=key->data; 
+
+#define LOOP(in,out) \
+                x=((x+1)&0xff); \
+                tx=d[x]; \
+                y=(tx+y)&0xff; \
+                d[x]=ty=d[y]; \
+                d[y]=tx; \
+                (out) = d[(tx+ty)&0xff]^ (in);
+
+#ifndef RC4_INDEX
+#define RC4_LOOP(a,b,i) LOOP(*((a)++),*((b)++))
+#else
+#define RC4_LOOP(a,b,i) LOOP(a[i],b[i])
+#endif
+
+        i= -(int)len;
+        i=(int)(len>>3L);
+        if (i)
+                {
+                for (;;)
+                        {
+                        RC4_LOOP(indata,outdata,0);
+                        RC4_LOOP(indata,outdata,1);
+                        RC4_LOOP(indata,outdata,2);
+                        RC4_LOOP(indata,outdata,3);
+                        RC4_LOOP(indata,outdata,4);
+                        RC4_LOOP(indata,outdata,5);
+                        RC4_LOOP(indata,outdata,6);
+                        RC4_LOOP(indata,outdata,7);
+#ifdef RC4_INDEX
+                        indata+=8;
+                        outdata+=8;
+#endif
+                        if (--i == 0) break;
+                        }
+                }
+        i=(int)len&0x07;
+        if (i)
+                {
+                for (;;)
+                        {
+                        RC4_LOOP(indata,outdata,0); if (--i == 0) break;
+                        RC4_LOOP(indata,outdata,1); if (--i == 0) break;
+                        RC4_LOOP(indata,outdata,2); if (--i == 0) break;
+                        RC4_LOOP(indata,outdata,3); if (--i == 0) break;
+                        RC4_LOOP(indata,outdata,4); if (--i == 0) break;
+                        RC4_LOOP(indata,outdata,5); if (--i == 0) break;
+                        RC4_LOOP(indata,outdata,6); if (--i == 0) break;
+                        }
+                }               
+        key->x=x;     
+        key->y=y;
+        }