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177 lines
7.9 KiB
C
177 lines
7.9 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.] */
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#ifndef OPENSSL_HEADER_DES_H
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#define OPENSSL_HEADER_DES_H
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#include <openssl/base.h>
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#if defined(__cplusplus)
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extern "C" {
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#endif
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// DES.
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typedef struct DES_cblock_st {
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uint8_t bytes[8];
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} DES_cblock;
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typedef struct DES_ks {
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uint32_t subkeys[16][2];
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} DES_key_schedule;
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#define DES_KEY_SZ (sizeof(DES_cblock))
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#define DES_SCHEDULE_SZ (sizeof(DES_key_schedule))
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#define DES_ENCRYPT 1
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#define DES_DECRYPT 0
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#define DES_CBC_MODE 0
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#define DES_PCBC_MODE 1
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// DES_set_key performs a key schedule and initialises |schedule| with |key|.
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OPENSSL_EXPORT void DES_set_key(const DES_cblock *key,
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DES_key_schedule *schedule);
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// DES_set_odd_parity sets the parity bits (the least-significant bits in each
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// byte) of |key| given the other bits in each byte.
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OPENSSL_EXPORT void DES_set_odd_parity(DES_cblock *key);
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// DES_ecb_encrypt encrypts (or decrypts, if |is_encrypt| is |DES_DECRYPT|) a
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// single DES block (8 bytes) from in to out, using the key configured in
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// |schedule|.
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OPENSSL_EXPORT void DES_ecb_encrypt(const DES_cblock *in, DES_cblock *out,
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const DES_key_schedule *schedule,
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int is_encrypt);
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// DES_ncbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
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// bytes from |in| to |out| with DES in CBC mode.
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OPENSSL_EXPORT void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out,
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size_t len,
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const DES_key_schedule *schedule,
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DES_cblock *ivec, int enc);
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// DES_ecb3_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) a single
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// block (8 bytes) of data from |input| to |output| using 3DES.
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OPENSSL_EXPORT void DES_ecb3_encrypt(const DES_cblock *input,
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DES_cblock *output,
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const DES_key_schedule *ks1,
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const DES_key_schedule *ks2,
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const DES_key_schedule *ks3,
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int enc);
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// DES_ede3_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
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// bytes from |in| to |out| with 3DES in CBC mode. 3DES uses three keys, thus
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// the function takes three different |DES_key_schedule|s.
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OPENSSL_EXPORT void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out,
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size_t len,
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const DES_key_schedule *ks1,
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const DES_key_schedule *ks2,
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const DES_key_schedule *ks3,
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DES_cblock *ivec, int enc);
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// DES_ede2_cbc_encrypt encrypts (or decrypts, if |enc| is |DES_DECRYPT|) |len|
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// bytes from |in| to |out| with 3DES in CBC mode. With this keying option, the
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// first and third 3DES keys are identical. Thus, this function takes only two
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// different |DES_key_schedule|s.
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OPENSSL_EXPORT void DES_ede2_cbc_encrypt(const uint8_t *in, uint8_t *out,
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size_t len,
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const DES_key_schedule *ks1,
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const DES_key_schedule *ks2,
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DES_cblock *ivec, int enc);
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// Deprecated functions.
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// DES_set_key_unchecked calls |DES_set_key|.
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OPENSSL_EXPORT void DES_set_key_unchecked(const DES_cblock *key,
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DES_key_schedule *schedule);
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OPENSSL_EXPORT void DES_ede3_cfb64_encrypt(const uint8_t *in, uint8_t *out,
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long length, DES_key_schedule *ks1,
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DES_key_schedule *ks2,
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DES_key_schedule *ks3,
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DES_cblock *ivec, int *num, int enc);
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OPENSSL_EXPORT void DES_ede3_cfb_encrypt(const uint8_t *in, uint8_t *out,
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int numbits, long length,
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DES_key_schedule *ks1,
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DES_key_schedule *ks2,
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DES_key_schedule *ks3,
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DES_cblock *ivec, int enc);
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// Private functions.
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//
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// These functions are only exported for use in |decrepit|.
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OPENSSL_EXPORT void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1,
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const DES_key_schedule *ks2,
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const DES_key_schedule *ks3);
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OPENSSL_EXPORT void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1,
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const DES_key_schedule *ks2,
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const DES_key_schedule *ks3);
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#if defined(__cplusplus)
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} // extern C
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#endif
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#endif // OPENSSL_HEADER_DES_H
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