1 files changed, 77 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/des/qud_cksm.c b/openssl-1.1.0h/crypto/des/qud_cksm.c
new file mode 100644
index 0000000..8710cec
--- /dev/null
+++ b/openssl-1.1.0h/crypto/des/qud_cksm.c
@@ -0,0 +1,77 @@
+/*
+ * 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
+ */
+
+/*
+ * From "Message Authentication" R.R. Jueneman, S.M. Matyas, C.H. Meyer IEEE
+ * Communications Magazine Sept 1985 Vol. 23 No. 9 p 29-40 This module in
+ * only based on the code in this paper and is almost definitely not the same
+ * as the MIT implementation.
+ */
+#include "des_locl.h"
+
+/* bug fix for dos - 7/6/91 - Larry hughes@logos.ucs.indiana.edu */
+#define Q_B0(a) (((DES_LONG)(a)))
+#define Q_B1(a) (((DES_LONG)(a))<<8)
+#define Q_B2(a) (((DES_LONG)(a))<<16)
+#define Q_B3(a) (((DES_LONG)(a))<<24)
+
+/* used to scramble things a bit */
+/* Got the value MIT uses via brute force :-) 2/10/90 eay */
+#define NOISE   ((DES_LONG)83653421L)
+
+DES_LONG DES_quad_cksum(const unsigned char *input, DES_cblock output[],
+                        long length, int out_count, DES_cblock *seed)
+{
+    DES_LONG z0, z1, t0, t1;
+    int i;
+    long l;
+    const unsigned char *cp;
+    DES_LONG *lp;
+
+    if (out_count < 1)
+        out_count = 1;
+    lp = (DES_LONG *)&(output[0])[0];
+
+    z0 = Q_B0((*seed)[0]) | Q_B1((*seed)[1]) | Q_B2((*seed)[2]) |
+        Q_B3((*seed)[3]);
+    z1 = Q_B0((*seed)[4]) | Q_B1((*seed)[5]) | Q_B2((*seed)[6]) |
+        Q_B3((*seed)[7]);
+
+    for (i = 0; ((i < 4) && (i < out_count)); i++) {
+        cp = input;
+        l = length;
+        while (l > 0) {
+            if (l > 1) {
+                t0 = (DES_LONG)(*(cp++));
+                t0 |= (DES_LONG)Q_B1(*(cp++));
+                l--;
+            } else
+                t0 = (DES_LONG)(*(cp++));
+            l--;
+            /* add */
+            t0 += z0;
+            t0 &= 0xffffffffL;
+            t1 = z1;
+            /* square, well sort of square */
+            z0 = ((((t0 * t0) & 0xffffffffL) + ((t1 * t1) & 0xffffffffL))
+                  & 0xffffffffL) % 0x7fffffffL;
+            z1 = ((t0 * ((t1 + NOISE) & 0xffffffffL)) & 0xffffffffL) %
+                0x7fffffffL;
+        }
+        if (lp != NULL) {
+            /*
+             * The MIT library assumes that the checksum is composed of
+             * 2*out_count 32 bit ints
+             */
+            *lp++ = z0;
+            *lp++ = z1;
+        }
+    }
+    return (z0);
+}