--- /dev/null
+/* 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
+
+
+// DES.
+
+
+typedef struct DES_cblock_st {
+ uint8_t bytes[8];
+} DES_cblock;
+
+typedef struct DES_ks {
+ uint32_t subkeys[16][2];
+} 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|.
+OPENSSL_EXPORT void DES_set_key(const DES_cblock *key,
+ DES_key_schedule *schedule);
+
+// DES_set_odd_parity sets the parity bits (the least-significant bits in each
+// byte) of |key| given the other bits in each byte.
+OPENSSL_EXPORT void DES_set_odd_parity(DES_cblock *key);
+
+// 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|.
+OPENSSL_EXPORT 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.
+OPENSSL_EXPORT 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_ecb3_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) a single
+// block (8 bytes) of data from |input| to |output| using 3DES.
+OPENSSL_EXPORT void DES_ecb3_encrypt(const DES_cblock *input,
+ DES_cblock *output,
+ const DES_key_schedule *ks1,
+ const DES_key_schedule *ks2,
+ const DES_key_schedule *ks3,
+ 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.
+OPENSSL_EXPORT 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);
+
+// DES_ede2_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
+// bytes from |in| to |out| with 3DES in CBC mode. With this keying option, the
+// first and third 3DES keys are identical. Thus, this function takes only two
+// different |DES_key_schedule|s.
+OPENSSL_EXPORT void DES_ede2_cbc_encrypt(const uint8_t *in, uint8_t *out,
+ size_t len,
+ const DES_key_schedule *ks1,
+ const DES_key_schedule *ks2,
+ DES_cblock *ivec, int enc);
+
+
+// Deprecated functions.
+
+// DES_set_key_unchecked calls |DES_set_key|.
+OPENSSL_EXPORT void DES_set_key_unchecked(const DES_cblock *key,
+ DES_key_schedule *schedule);
+
+OPENSSL_EXPORT void DES_ede3_cfb64_encrypt(const uint8_t *in, uint8_t *out,
+ long length, DES_key_schedule *ks1,
+ DES_key_schedule *ks2,
+ DES_key_schedule *ks3,
+ DES_cblock *ivec, int *num, int enc);
+
+OPENSSL_EXPORT void DES_ede3_cfb_encrypt(const uint8_t *in, uint8_t *out,
+ int numbits, long length,
+ DES_key_schedule *ks1,
+ DES_key_schedule *ks2,
+ DES_key_schedule *ks3,
+ DES_cblock *ivec, int enc);
+
+
+// Private functions.
+//
+// These functions are only exported for use in |decrepit|.
+
+OPENSSL_EXPORT void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1,
+ const DES_key_schedule *ks2,
+ const DES_key_schedule *ks3);
+
+OPENSSL_EXPORT void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1,
+ const DES_key_schedule *ks2,
+ const DES_key_schedule *ks3);
+
+
+#if defined(__cplusplus)
+} // extern C
+#endif
+
+#endif // OPENSSL_HEADER_DES_H
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