From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>
Date: Fri, 30 Apr 2021 00:33:56 +0200
Subject: initial/final commit

---
 openssl-1.1.0h/crypto/rc4/rc4_enc.c | 86 +++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 openssl-1.1.0h/crypto/rc4/rc4_enc.c

(limited to 'openssl-1.1.0h/crypto/rc4/rc4_enc.c')

diff --git a/openssl-1.1.0h/crypto/rc4/rc4_enc.c b/openssl-1.1.0h/crypto/rc4/rc4_enc.c
new file mode 100644
index 0000000..be11bad
--- /dev/null
+++ b/openssl-1.1.0h/crypto/rc4/rc4_enc.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/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(RC4_KEY *key, size_t len, const unsigned char *indata,
+         unsigned char *outdata)
+{
+    register RC4_INT *d;
+    register RC4_INT x, y, tx, ty;
+    size_t 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);
+
+    i = len >> 3;
+    if (i) {
+        for (;;) {
+            LOOP(indata[0], outdata[0]);
+            LOOP(indata[1], outdata[1]);
+            LOOP(indata[2], outdata[2]);
+            LOOP(indata[3], outdata[3]);
+            LOOP(indata[4], outdata[4]);
+            LOOP(indata[5], outdata[5]);
+            LOOP(indata[6], outdata[6]);
+            LOOP(indata[7], outdata[7]);
+            indata += 8;
+            outdata += 8;
+            if (--i == 0)
+                break;
+        }
+    }
+    i = len & 0x07;
+    if (i) {
+        for (;;) {
+            LOOP(indata[0], outdata[0]);
+            if (--i == 0)
+                break;
+            LOOP(indata[1], outdata[1]);
+            if (--i == 0)
+                break;
+            LOOP(indata[2], outdata[2]);
+            if (--i == 0)
+                break;
+            LOOP(indata[3], outdata[3]);
+            if (--i == 0)
+                break;
+            LOOP(indata[4], outdata[4]);
+            if (--i == 0)
+                break;
+            LOOP(indata[5], outdata[5]);
+            if (--i == 0)
+                break;
+            LOOP(indata[6], outdata[6]);
+            if (--i == 0)
+                break;
+        }
+    }
+    key->x = x;
+    key->y = y;
+}
-- 
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