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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 8796 | turbocat | 1 | /********************************************************************* |
| 2 | * Filename: des.h |
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| 3 | * Author: Brad Conte (brad AT bradconte.com) |
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| 4 | * Copyright: |
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| 5 | * Disclaimer: This code is presented "as is" without any guarantees. |
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| 6 | * Details: Defines the API for the corresponding DES implementation. |
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| 7 | Note that encryption and decryption are defined by how |
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| 8 | the key setup is performed, the actual en/de-cryption is |
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| 9 | performed by the same function. |
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| 10 | *********************************************************************/ |
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| 11 | |||
| 12 | #ifndef DES_H |
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| 13 | #define DESH |
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| 14 | |||
| 15 | /*************************** HEADER FILES ***************************/ |
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| 16 | #include |
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| 17 | |||
| 18 | /****************************** MACROS ******************************/ |
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| 19 | #define DES_BLOCK_SIZE 8 // DES operates on 8 bytes at a time |
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| 20 | |||
| 21 | /**************************** DATA TYPES ****************************/ |
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| 22 | typedef unsigned char BYTE; // 8-bit byte |
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| 23 | typedef unsigned int WORD; // 32-bit word, change to "long" for 16-bit machines |
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| 24 | |||
| 25 | typedef enum { |
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| 26 | DES_ENCRYPT, |
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| 27 | DES_DECRYPT |
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| 28 | } DES_MODE; |
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| 29 | |||
| 30 | /*********************** FUNCTION DECLARATIONS **********************/ |
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| 31 | void des_key_setup(const BYTE key[], BYTE schedule[][6], DES_MODE mode); |
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| 32 | void des_crypt(const BYTE in[], BYTE out[], const BYTE key[][6]); |
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| 33 | |||
| 34 | void three_des_key_setup(const BYTE key[], BYTE schedule[][16][6], DES_MODE mode); |
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| 35 | void three_des_crypt(const BYTE in[], BYTE out[], const BYTE key[][16][6]); |
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| 36 | |||
| 37 | #endif // DES_H |