1. 根目录:
2. include
3. crypto
4. des.h

/* 
 * DES & Triple DES EDE Cipher Algorithms.
 */

#ifndef __CRYPTO_DES_H
#define __CRYPTO_DES_H

#define DES_KEY_SIZE		8
#define DES_EXPKEY_WORDS	32
#define DES_BLOCK_SIZE		8

#define DES3_EDE_KEY_SIZE	(3 * DES_KEY_SIZE)
#define DES3_EDE_EXPKEY_WORDS	(3 * DES_EXPKEY_WORDS)
#define DES3_EDE_BLOCK_SIZE	DES_BLOCK_SIZE


extern unsigned long des_ekey(u32 *pe, const u8 *k);

extern int __des3_ede_setkey(u32 *expkey, u32 *flags, const u8 *key,
			     unsigned int keylen);

#endif /* __CRYPTO_DES_H */