| /* 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. |
| // |
| // This module is deprecated and retained for legacy reasons only. It is slow |
| // and may leak key material with timing or cache side channels. Moreover, |
| // single-keyed DES is broken and can be brute-forced in under a day. |
| // |
| // Use a modern cipher, such as AES-GCM or ChaCha20-Poly1305, instead. |
| |
| |
| 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 |
