des.c File Reference

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Macros
#define	uchar   unsigned char
#define	uint   unsigned int
#define	ENCRYPT   1
#define	DECRYPT   0
#define	BITNUM(a, b, c)   (((a[(b)/8] >> (7 - (b%8))) & 0x01) << (c))
#define	BITNUMINTR(a, b, c)   ((((a) >> (31 - (b))) & 0x00000001) << (c))
#define	BITNUMINTL(a, b, c)   ((((a) << (b)) & 0x80000000) >> (c))
#define	SBOXBIT(a)   (((a) & 0x20) | (((a) & 0x1f) >> 1) | (((a) & 0x01) << 4))

Functions
void	key_schedule (uchar key[], uchar schedule[][6], uint mode)
void	IP (uint state[], uchar in[])
void	InvIP (uint state[], uchar in[])
uint	f (uint state, uchar key[])
void	des_crypt (uchar in[], uchar out[], uchar key[][6])
void	three_des_key_schedule (uchar key[], uchar schedule[][16][6], uint mode)
void	three_des_crypt (uchar in[], uchar out[], uchar key[][16][6])

Variables
uchar	sbox1 [64]
uchar	sbox2 [64]
uchar	sbox3 [64]
uchar	sbox4 [64]
uchar	sbox5 [64]
uchar	sbox6 [64]
uchar	sbox7 [64]
uchar	sbox8 [64]

Macro Definition Documentation

BITNUM

#define BITNUM	(		a,
			b,
			c
	)		(((a[(b)/8] >> (7 - (b%8))) & 0x01) << (c))

Definition at line 18 of file des.c.

BITNUMINTL

#define BITNUMINTL	(		a,
			b,
			c
	)		((((a) << (b)) & 0x80000000) >> (c))

Definition at line 20 of file des.c.

BITNUMINTR

#define BITNUMINTR	(		a,
			b,
			c
	)		((((a) >> (31 - (b))) & 0x00000001) << (c))

Definition at line 19 of file des.c.

DECRYPT

#define DECRYPT   0

Definition at line 15 of file des.c.

ENCRYPT

#define ENCRYPT   1

Definition at line 14 of file des.c.

SBOXBIT

#define SBOXBIT

(

a

)

(((a) & 0x20) | (((a) & 0x1f) >> 1) | (((a) & 0x01) << 4))

Definition at line 23 of file des.c.

uchar

#define uchar   unsigned char

Definition at line 12 of file des.c.

uint

#define uint   unsigned int

Definition at line 13 of file des.c.

Function Documentation

des_crypt()

void des_crypt	(	uchar	in[],
		uchar	out[],
		uchar	key[][6]
	)

Definition at line 230 of file des.c.

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f()

uint f	(	uint	state,
		uchar	key[]
	)

Definition at line 172 of file des.c.

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InvIP()

void InvIP	(	uint	state[],
		uchar	in[]
	)

Definition at line 137 of file des.c.

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IP()

void IP	(	uint	state[],
		uchar	in[]
	)

Definition at line 116 of file des.c.

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key_schedule()

void key_schedule	(	uchar	key[],
		uchar	schedule[][6],
		uint	mode
	)

Definition at line 75 of file des.c.

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three_des_crypt()

void three_des_crypt	(	uchar	in[],
		uchar	out[],
		uchar	key[][16][6]
	)

Definition at line 266 of file des.c.

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three_des_key_schedule()

void three_des_key_schedule	(	uchar	key[],
		uchar	schedule[][16][6],
		uint	mode
	)

Definition at line 252 of file des.c.

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Variable Documentation

sbox1

uchar sbox1[64]

Initial value:

= {
   14,  4,  13,  1,   2, 15,  11,  8,   3, 10,   6, 12,   5,  9,   0,  7,
    0, 15,   7,  4,  14,  2,  13,  1,  10,  6,  12, 11,   9,  5,   3,  8,
    4,  1,  14,  8,  13,  6,   2, 11,  15, 12,   9,  7,   3, 10,   5,  0,
   15, 12,   8,  2,   4,  9,   1,  7,   5, 11,   3, 14,  10,  0,   6, 13
}

Definition at line 25 of file des.c.

sbox2

uchar sbox2[64]

Initial value:

= {
   15,  1,   8, 14,   6, 11,   3,  4,   9,  7,   2, 13,  12,  0,   5, 10,
    3, 13,   4,  7,  15,  2,   8, 14,  12,  0,   1, 10,   6,  9,  11,  5,
    0, 14,   7, 11,  10,  4,  13,  1,   5,  8,  12,  6,   9,  3,   2, 15,
   13,  8,  10,  1,   3, 15,   4,  2,  11,  6,   7, 12,   0,  5,  14,  9
}

Definition at line 31 of file des.c.

sbox3

uchar sbox3[64]

Initial value:

= {
   10,  0,   9, 14,   6,  3,  15,  5,   1, 13,  12,  7,  11,  4,   2,  8,
   13,  7,   0,  9,   3,  4,   6, 10,   2,  8,   5, 14,  12, 11,  15,  1,
   13,  6,   4,  9,   8, 15,   3,  0,  11,  1,   2, 12,   5, 10,  14,  7,
    1, 10,  13,  0,   6,  9,   8,  7,   4, 15,  14,  3,  11,  5,   2, 12
}

Definition at line 37 of file des.c.

sbox4

uchar sbox4[64]

Initial value:

= {
    7, 13,  14,  3,   0,  6,   9, 10,   1,  2,   8,  5,  11, 12,   4, 15,
   13,  8,  11,  5,   6, 15,   0,  3,   4,  7,   2, 12,   1, 10,  14,  9,
   10,  6,   9,  0,  12, 11,   7, 13,  15,  1,   3, 14,   5,  2,   8,  4,
    3, 15,   0,  6,  10,  1,  13,  8,   9,  4,   5, 11,  12,  7,   2, 14
}

Definition at line 43 of file des.c.

sbox5

uchar sbox5[64]

Initial value:

= {
    2, 12,   4,  1,   7, 10,  11,  6,   8,  5,   3, 15,  13,  0,  14,  9,
   14, 11,   2, 12,   4,  7,  13,  1,   5,  0,  15, 10,   3,  9,   8,  6,
    4,  2,   1, 11,  10, 13,   7,  8,  15,  9,  12,  5,   6,  3,   0, 14,
   11,  8,  12,  7,   1, 14,   2, 13,   6, 15,   0,  9,  10,  4,   5,  3
}

Definition at line 49 of file des.c.

sbox6

uchar sbox6[64]

Initial value:

= {
   12,  1,  10, 15,   9,  2,   6,  8,   0, 13,   3,  4,  14,  7,   5, 11,
   10, 15,   4,  2,   7, 12,   9,  5,   6,  1,  13, 14,   0, 11,   3,  8,
    9, 14,  15,  5,   2,  8,  12,  3,   7,  0,   4, 10,   1, 13,  11,  6,
    4,  3,   2, 12,   9,  5,  15, 10,  11, 14,   1,  7,   6,  0,   8, 13
}

Definition at line 55 of file des.c.

sbox7

uchar sbox7[64]

Initial value:

= {
    4, 11,   2, 14,  15,  0,   8, 13,   3, 12,   9,  7,   5, 10,   6,  1,
   13,  0,  11,  7,   4,  9,   1, 10,  14,  3,   5, 12,   2, 15,   8,  6,
    1,  4,  11, 13,  12,  3,   7, 14,  10, 15,   6,  8,   0,  5,   9,  2,
    6, 11,  13,  8,   1,  4,  10,  7,   9,  5,   0, 15,  14,  2,   3, 12
}

Definition at line 61 of file des.c.

sbox8

uchar sbox8[64]

Initial value:

= {
   13,  2,   8,  4,   6, 15,  11,  1,  10,  9,   3, 14,   5,  0,  12,  7,
    1, 15,  13,  8,  10,  3,   7,  4,  12,  5,   6, 11,   0, 14,   9,  2,
    7, 11,   4,  1,   9, 12,  14,  2,   0,  6,  10, 13,  15,  3,   5,  8,
    2,  1,  14,  7,   4, 10,   8, 13,  15, 12,   9,  0,   3,  5,   6, 11
}

Definition at line 67 of file des.c.