From c61e5359cb454ae20c0b7b057c3a7b53e2beefd6 Mon Sep 17 00:00:00 2001 From: Mark Haines Date: Thu, 26 Feb 2015 16:43:06 +0000 Subject: Squashed 'lib/crypto-algorithms/' content from commit 100f4ff git-subtree-dir: lib/crypto-algorithms git-subtree-split: 100f4ff91b5a5b31a84b3999365c3058df6251ea --- des.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 des.h (limited to 'des.h') diff --git a/des.h b/des.h new file mode 100644 index 0000000..1503772 --- /dev/null +++ b/des.h @@ -0,0 +1,37 @@ +/********************************************************************* +* Filename: des.h +* Author: Brad Conte (brad AT bradconte.com) +* Copyright: +* Disclaimer: This code is presented "as is" without any guarantees. +* Details: Defines the API for the corresponding DES implementation. + Note that encryption and decryption are defined by how + the key setup is performed, the actual en/de-cryption is + performed by the same function. +*********************************************************************/ + +#ifndef DES_H +#define DESH + +/*************************** HEADER FILES ***************************/ +#include + +/****************************** MACROS ******************************/ +#define DES_BLOCK_SIZE 8 // DES operates on 8 bytes at a time + +/**************************** DATA TYPES ****************************/ +typedef unsigned char BYTE; // 8-bit byte +typedef unsigned int WORD; // 32-bit word, change to "long" for 16-bit machines + +typedef enum { + DES_ENCRYPT, + DES_DECRYPT +} DES_MODE; + +/*********************** FUNCTION DECLARATIONS **********************/ +void des_key_setup(const BYTE key[], BYTE schedule[][6], DES_MODE mode); +void des_crypt(const BYTE in[], BYTE out[], const BYTE key[][6]); + +void three_des_key_setup(const BYTE key[], BYTE schedule[][16][6], DES_MODE mode); +void three_des_crypt(const BYTE in[], BYTE out[], const BYTE key[][16][6]); + +#endif // DES_H -- cgit v1.2.3