| /* 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 |