diff --git a/crypto/des/des.h b/crypto/des/des.h
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+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#ifndef OPENSSL_HEADER_DES_H
+#define OPENSSL_HEADER_DES_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+typedef struct DES_cblock_st {
+  uint8_t bytes[8];
+} DES_cblock;
+
+typedef struct DES_ks {
+  union {
+    DES_cblock cblock;
+    /* make sure things are correct size on machines with
+     * 8 byte longs */
+    uint32_t deslong[2];
+  } ks[16];
+} DES_key_schedule;
+
+
+#define DES_KEY_SZ (sizeof(DES_cblock))
+#define DES_SCHEDULE_SZ (sizeof(DES_key_schedule))
+
+#define DES_ENCRYPT 1
+#define DES_DECRYPT 0
+
+#define DES_CBC_MODE 0
+#define DES_PCBC_MODE 1
+
+/* DES_set_key performs a key schedule and initialises |schedule| with |key|. */
+void DES_set_key(const DES_cblock *key, DES_key_schedule *schedule);
+
+/* DES_ecb_encrypt encrypts (or decrypts, if |is_encrypt| is |DES_DECRYPT|) a
+ * single DES block (8 bytes) from in to out, using the key configured in
+ * |schedule|. */
+void DES_ecb_encrypt(const DES_cblock *in, DES_cblock *out,
+                     const DES_key_schedule *schedule, int is_encrypt);
+
+/* DES_ncbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+ * bytes from |in| to |out| with DES in CBC mode. */
+void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                      const DES_key_schedule *schedule, DES_cblock *ivec,
+                      int enc);
+
+/* DES_ede3_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+ * bytes from |in| to |out| with 3DES in CBC mode. 3DES uses three keys, thus
+ * the function takes three different |DES_key_schedule|s. */
+void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
+                          const DES_key_schedule *ks1,
+                          const DES_key_schedule *ks2,
+                          const DES_key_schedule *ks3, DES_cblock *ivec,
+                          int enc);
+
+
+#if defined(__cplusplus)
+}  /* extern C */
+#endif
+
+#endif  /* OPENSSL_HEADER_DES_H */