Openssl 1.1.0h

2018-04-02 22:33:38 +09:00
commit 1fd4faa81c
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+/*
+ * 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/blowfish.h>
+#include "bf_locl.h"
+
+void BF_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
+                    const BF_KEY *schedule, unsigned char *ivec, int encrypt)
+{
+    register BF_LONG tin0, tin1;
+    register BF_LONG tout0, tout1, xor0, xor1;
+    register long l = length;
+    BF_LONG tin[2];
+
+    if (encrypt) {
+        n2l(ivec, tout0);
+        n2l(ivec, tout1);
+        ivec -= 8;
+        for (l -= 8; l >= 0; l -= 8) {
+            n2l(in, tin0);
+            n2l(in, tin1);
+            tin0 ^= tout0;
+            tin1 ^= tout1;
+            tin[0] = tin0;
+            tin[1] = tin1;
+            BF_encrypt(tin, schedule);
+            tout0 = tin[0];
+            tout1 = tin[1];
+            l2n(tout0, out);
+            l2n(tout1, out);
+        }
+        if (l != -8) {
+            n2ln(in, tin0, tin1, l + 8);
+            tin0 ^= tout0;
+            tin1 ^= tout1;
+            tin[0] = tin0;
+            tin[1] = tin1;
+            BF_encrypt(tin, schedule);
+            tout0 = tin[0];
+            tout1 = tin[1];
+            l2n(tout0, out);
+            l2n(tout1, out);
+        }
+        l2n(tout0, ivec);
+        l2n(tout1, ivec);
+    } else {
+        n2l(ivec, xor0);
+        n2l(ivec, xor1);
+        ivec -= 8;
+        for (l -= 8; l >= 0; l -= 8) {
+            n2l(in, tin0);
+            n2l(in, tin1);
+            tin[0] = tin0;
+            tin[1] = tin1;
+            BF_decrypt(tin, schedule);
+            tout0 = tin[0] ^ xor0;
+            tout1 = tin[1] ^ xor1;
+            l2n(tout0, out);
+            l2n(tout1, out);
+            xor0 = tin0;
+            xor1 = tin1;
+        }
+        if (l != -8) {
+            n2l(in, tin0);
+            n2l(in, tin1);
+            tin[0] = tin0;
+            tin[1] = tin1;
+            BF_decrypt(tin, schedule);
+            tout0 = tin[0] ^ xor0;
+            tout1 = tin[1] ^ xor1;
+            l2nn(tout0, tout1, out, l + 8);
+            xor0 = tin0;
+            xor1 = tin1;
+        }
+        l2n(xor0, ivec);
+        l2n(xor1, ivec);
+    }
+    tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
+    tin[0] = tin[1] = 0;
+}