1 files changed, 74 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/rc5/rc5cfb64.c b/openssl-1.1.0h/crypto/rc5/rc5cfb64.c
new file mode 100644
index 0000000..9a8aa6b
--- /dev/null
+++ b/openssl-1.1.0h/crypto/rc5/rc5cfb64.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/rc5.h>
+#include "rc5_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 RC5_32_cfb64_encrypt(const unsigned char *in, unsigned char *out,
+                          long length, RC5_32_KEY *schedule,
+                          unsigned char *ivec, int *num, int encrypt)
+{
+    register unsigned long v0, v1, t;
+    register int n = *num;
+    register long l = length;
+    unsigned long ti[2];
+    unsigned char *iv, c, cc;
+
+    iv = (unsigned char *)ivec;
+    if (encrypt) {
+        while (l--) {
+            if (n == 0) {
+                c2l(iv, v0);
+                ti[0] = v0;
+                c2l(iv, v1);
+                ti[1] = v1;
+                RC5_32_encrypt((unsigned long *)ti, schedule);
+                iv = (unsigned char *)ivec;
+                t = ti[0];
+                l2c(t, iv);
+                t = ti[1];
+                l2c(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) {
+                c2l(iv, v0);
+                ti[0] = v0;
+                c2l(iv, v1);
+                ti[1] = v1;
+                RC5_32_encrypt((unsigned long *)ti, schedule);
+                iv = (unsigned char *)ivec;
+                t = ti[0];
+                l2c(t, iv);
+                t = ti[1];
+                l2c(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;
+}