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/des/xcbc_enc.c | 103 +++++++++++++++++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 openssl-1.1.0h/crypto/des/xcbc_enc.c

(limited to 'openssl-1.1.0h/crypto/des/xcbc_enc.c')

diff --git a/openssl-1.1.0h/crypto/des/xcbc_enc.c b/openssl-1.1.0h/crypto/des/xcbc_enc.c
new file mode 100644
index 0000000..c4e455d
--- /dev/null
+++ b/openssl-1.1.0h/crypto/des/xcbc_enc.c
@@ -0,0 +1,103 @@
+/*
+ * 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 "des_locl.h"
+
+/* RSA's DESX */
+
+void DES_xcbc_encrypt(const unsigned char *in, unsigned char *out,
+                      long length, DES_key_schedule *schedule,
+                      DES_cblock *ivec, const_DES_cblock *inw,
+                      const_DES_cblock *outw, int enc)
+{
+    register DES_LONG tin0, tin1;
+    register DES_LONG tout0, tout1, xor0, xor1;
+    register DES_LONG inW0, inW1, outW0, outW1;
+    register const unsigned char *in2;
+    register long l = length;
+    DES_LONG tin[2];
+    unsigned char *iv;
+
+    in2 = &(*inw)[0];
+    c2l(in2, inW0);
+    c2l(in2, inW1);
+    in2 = &(*outw)[0];
+    c2l(in2, outW0);
+    c2l(in2, outW1);
+
+    iv = &(*ivec)[0];
+
+    if (enc) {
+        c2l(iv, tout0);
+        c2l(iv, tout1);
+        for (l -= 8; l >= 0; l -= 8) {
+            c2l(in, tin0);
+            c2l(in, tin1);
+            tin0 ^= tout0 ^ inW0;
+            tin[0] = tin0;
+            tin1 ^= tout1 ^ inW1;
+            tin[1] = tin1;
+            DES_encrypt1(tin, schedule, DES_ENCRYPT);
+            tout0 = tin[0] ^ outW0;
+            l2c(tout0, out);
+            tout1 = tin[1] ^ outW1;
+            l2c(tout1, out);
+        }
+        if (l != -8) {
+            c2ln(in, tin0, tin1, l + 8);
+            tin0 ^= tout0 ^ inW0;
+            tin[0] = tin0;
+            tin1 ^= tout1 ^ inW1;
+            tin[1] = tin1;
+            DES_encrypt1(tin, schedule, DES_ENCRYPT);
+            tout0 = tin[0] ^ outW0;
+            l2c(tout0, out);
+            tout1 = tin[1] ^ outW1;
+            l2c(tout1, out);
+        }
+        iv = &(*ivec)[0];
+        l2c(tout0, iv);
+        l2c(tout1, iv);
+    } else {
+        c2l(iv, xor0);
+        c2l(iv, xor1);
+        for (l -= 8; l > 0; l -= 8) {
+            c2l(in, tin0);
+            tin[0] = tin0 ^ outW0;
+            c2l(in, tin1);
+            tin[1] = tin1 ^ outW1;
+            DES_encrypt1(tin, schedule, DES_DECRYPT);
+            tout0 = tin[0] ^ xor0 ^ inW0;
+            tout1 = tin[1] ^ xor1 ^ inW1;
+            l2c(tout0, out);
+            l2c(tout1, out);
+            xor0 = tin0;
+            xor1 = tin1;
+        }
+        if (l != -8) {
+            c2l(in, tin0);
+            tin[0] = tin0 ^ outW0;
+            c2l(in, tin1);
+            tin[1] = tin1 ^ outW1;
+            DES_encrypt1(tin, schedule, DES_DECRYPT);
+            tout0 = tin[0] ^ xor0 ^ inW0;
+            tout1 = tin[1] ^ xor1 ^ inW1;
+            l2cn(tout0, tout1, out, l + 8);
+            xor0 = tin0;
+            xor1 = tin1;
+        }
+
+        iv = &(*ivec)[0];
+        l2c(xor0, iv);
+        l2c(xor1, iv);
+    }
+    tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
+    inW0 = inW1 = outW0 = outW1 = 0;
+    tin[0] = tin[1] = 0;
+}
-- 
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