1 files changed, 73 insertions, 0 deletions
diff --git a/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/des/cfb64enc.c b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/des/cfb64enc.c
new file mode 100644
index 000000000..ca0e82164
--- /dev/null
+++ b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/des/cfb64enc.c
@@ -0,0 +1,73 @@
+/*
+ * 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_local.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 DES_cfb64_encrypt(const unsigned char *in, unsigned char *out,
+                       long length, DES_key_schedule *schedule,
+                       DES_cblock *ivec, int *num, int enc)
+{
+    register DES_LONG v0, v1;
+    register long l = length;
+    register int n = *num;
+    DES_LONG ti[2];
+    unsigned char *iv, c, cc;
+
+    iv = &(*ivec)[0];
+    if (enc) {
+        while (l--) {
+            if (n == 0) {
+                c2l(iv, v0);
+                ti[0] = v0;
+                c2l(iv, v1);
+                ti[1] = v1;
+                DES_encrypt1(ti, schedule, DES_ENCRYPT);
+                iv = &(*ivec)[0];
+                v0 = ti[0];
+                l2c(v0, iv);
+                v0 = ti[1];
+                l2c(v0, iv);
+                iv = &(*ivec)[0];
+            }
+            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;
+                DES_encrypt1(ti, schedule, DES_ENCRYPT);
+                iv = &(*ivec)[0];
+                v0 = ti[0];
+                l2c(v0, iv);
+                v0 = ti[1];
+                l2c(v0, iv);
+                iv = &(*ivec)[0];
+            }
+            cc = *(in++);
+            c = iv[n];
+            iv[n] = cc;
+            *(out++) = c ^ cc;
+            n = (n + 1) & 0x07;
+        }
+    }
+    v0 = v1 = ti[0] = ti[1] = c = cc = 0;
+    *num = n;
+}