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/bf/bf_cfb64.c | 74 +++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 openssl-1.1.0h/crypto/bf/bf_cfb64.c

(limited to 'openssl-1.1.0h/crypto/bf/bf_cfb64.c')

diff --git a/openssl-1.1.0h/crypto/bf/bf_cfb64.c b/openssl-1.1.0h/crypto/bf/bf_cfb64.c
new file mode 100644
index 0000000..ce6e13b
--- /dev/null
+++ b/openssl-1.1.0h/crypto/bf/bf_cfb64.c
@@ -0,0 +1,74 @@
+/*
+ * 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"
+
+/*
+ * The input and output encrypted as though 64bit cfb mode is being used.
+ * The extra state information to record how much of the 64bit block we have
+ * used is contained in *num;
+ */
+
+void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out,
+                      long length, const BF_KEY *schedule,
+                      unsigned char *ivec, int *num, int encrypt)
+{
+    register BF_LONG v0, v1, t;
+    register int n = *num;
+    register long l = length;
+    BF_LONG ti[2];
+    unsigned char *iv, c, cc;
+
+    iv = (unsigned char *)ivec;
+    if (encrypt) {
+        while (l--) {
+            if (n == 0) {
+                n2l(iv, v0);
+                ti[0] = v0;
+                n2l(iv, v1);
+                ti[1] = v1;
+                BF_encrypt((BF_LONG *)ti, schedule);
+                iv = (unsigned char *)ivec;
+                t = ti[0];
+                l2n(t, iv);
+                t = ti[1];
+                l2n(t, iv);
+                iv = (unsigned char *)ivec;
+            }
+            c = *(in++) ^ iv[n];
+            *(out++) = c;
+            iv[n] = c;
+            n = (n + 1) & 0x07;
+        }
+    } else {
+        while (l--) {
+            if (n == 0) {
+                n2l(iv, v0);
+                ti[0] = v0;
+                n2l(iv, v1);
+                ti[1] = v1;
+                BF_encrypt((BF_LONG *)ti, schedule);
+                iv = (unsigned char *)ivec;
+                t = ti[0];
+                l2n(t, iv);
+                t = ti[1];
+                l2n(t, iv);
+                iv = (unsigned char *)ivec;
+            }
+            cc = *(in++);
+            c = iv[n];
+            iv[n] = cc;
+            *(out++) = c ^ cc;
+            n = (n + 1) & 0x07;
+        }
+    }
+    v0 = v1 = ti[0] = ti[1] = t = c = cc = 0;
+    *num = n;
+}
-- 
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