crypt_blowfish.c File Reference

#include <string.h>
#include <errno.h>
#include "crypt_blowfish.h"

Go to the source code of this file.

Classes
struct	BF_ctx

Macros
#define	__set_errno(val)   errno = (val)
#define	BF_ASM   0
#define	BF_SCALE   0
#define	BF_N   16
#define	BF_safe_atoi64(dst, src)
#define	BF_INDEX(S, i)    (*((BF_word *)(((unsigned char *)S) + (i))))
#define	BF_ROUND(L, R, N)
#define	BF_ENCRYPT
#define	BF_body()

Typedefs
typedef unsigned int	BF_word
typedef signed int	BF_word_signed
typedef BF_word	BF_key[16+2]

Functions
static int	BF_decode (BF_word *dst, const char *src, int size)
static void	BF_encode (char *dst, const BF_word *src, int size)
static void	BF_swap (BF_word *x, int count)
static void	BF_set_key (const char *key, BF_key expanded, BF_key initial, unsigned char flags)
static char *	BF_crypt (const char *key, const char *setting, char *output, int size, BF_word min)
int	_crypt_output_magic (const char *setting, char *output, int size)
char *	_crypt_blowfish_rn (const char *key, const char *setting, char *output, int size)
char *	_crypt_gensalt_blowfish_rn (const char *prefix, unsigned long count, const char *input, int size, char *output, int output_size)

Variables
static BF_word	BF_magic_w [6]
static BF_ctx	BF_init_state
static unsigned char	BF_itoa64 [64+1]
static unsigned char	BF_atoi64 [0x60]

Macro Definition Documentation

__set_errno

#define __set_errno

(

val

)

errno = (val)

Definition at line 50 of file crypt_blowfish.c.

BF_ASM

#define BF_ASM   0

Definition at line 63 of file crypt_blowfish.c.

BF_body

#define BF_body

(

)

Value:

    L = R = 0; \
    ptr = data.ctx.P; \
    do { \
        ptr += 2; \
        BF_ENCRYPT; \
        *(ptr - 2) = L; \
        *(ptr - 1) = R; \
    } while (ptr < &data.ctx.P[BF_N + 2]); \
\
    ptr = data.ctx.S[0]; \
    do { \
        ptr += 2; \
        BF_ENCRYPT; \
        *(ptr - 2) = L; \
        *(ptr - 1) = R; \
    } while (ptr < &data.ctx.S[3][0xFF]);

Definition at line 524 of file crypt_blowfish.c.

BF_ENCRYPT

#define BF_ENCRYPT

Value:

    L ^= data.ctx.P[0]; \
	BF_ROUND(L, R, 0); \
	BF_ROUND(R, L, 1); \
	BF_ROUND(L, R, 2); \
	BF_ROUND(R, L, 3); \
	BF_ROUND(L, R, 4); \
	BF_ROUND(R, L, 5); \
	BF_ROUND(L, R, 6); \
	BF_ROUND(R, L, 7); \
	BF_ROUND(L, R, 8); \
	BF_ROUND(R, L, 9); \
	BF_ROUND(L, R, 10); \
	BF_ROUND(R, L, 11); \
	BF_ROUND(L, R, 12); \
	BF_ROUND(R, L, 13); \
	BF_ROUND(L, R, 14); \
	BF_ROUND(R, L, 15); \
    tmp4 = R; \
    R = L; \
    L = tmp4 ^ data.ctx.P[BF_N + 1];

Definition at line 498 of file crypt_blowfish.c.

BF_INDEX

#define BF_INDEX	(		S,
			i
	)		(*((BF_word *)(((unsigned char *)S) + (i))))

Definition at line 474 of file crypt_blowfish.c.

BF_N

#define BF_N   16

Definition at line 71 of file crypt_blowfish.c.

BF_ROUND

#define BF_ROUND	(		L,
			R,
			N
	)

Value:

    tmp1 = L & 0xFF; \
    tmp1 <<= 2; \
    tmp2 = L >> 6; \
    tmp2 &= 0x3FC; \
    tmp3 = L >> 14; \
    tmp3 &= 0x3FC; \
    tmp4 = L >> 22; \
    tmp4 &= 0x3FC; \
    tmp1 = BF_INDEX(data.ctx.S[3], tmp1); \
    tmp2 = BF_INDEX(data.ctx.S[2], tmp2); \
    tmp3 = BF_INDEX(data.ctx.S[1], tmp3); \
    tmp3 += BF_INDEX(data.ctx.S[0], tmp4); \
    tmp3 ^= tmp2; \
    R ^= data.ctx.P[N + 1]; \
    tmp3 += tmp1; \
    R ^= tmp3;

Definition at line 476 of file crypt_blowfish.c.

BF_safe_atoi64

#define BF_safe_atoi64	(		dst,
			src
	)

Value:

{ \
    tmp = (unsigned char)(src); \
	if ((unsigned int)(tmp -= 0x20) >= 0x60) return -1; \
    tmp = BF_atoi64[tmp]; \
    if (tmp > 63) return -1; \
    (dst) = tmp; \
}

Definition at line 376 of file crypt_blowfish.c.

BF_SCALE

#define BF_SCALE   0

Definition at line 64 of file crypt_blowfish.c.

Typedef Documentation

BF_key

typedef BF_word BF_key[16+2]

Definition at line 73 of file crypt_blowfish.c.

BF_word

typedef unsigned int BF_word

Definition at line 67 of file crypt_blowfish.c.

BF_word_signed

typedef signed int BF_word_signed

Definition at line 68 of file crypt_blowfish.c.

Function Documentation

_crypt_blowfish_rn()

char * _crypt_blowfish_rn	(	const char *	key,
		const char *	setting,
		char *	output,
		int	size
	)

Definition at line 814 of file crypt_blowfish.c.

_crypt_gensalt_blowfish_rn()

char * _crypt_gensalt_blowfish_rn	(	const char *	prefix,
		unsigned long	count,
		const char *	input,
		int	size,
		char *	output,
		int	output_size
	)

Definition at line 876 of file crypt_blowfish.c.

_crypt_output_magic()

int _crypt_output_magic	(	const char *	setting,
		char *	output,
		int	size
	)

Definition at line 779 of file crypt_blowfish.c.

BF_crypt()

static char * BF_crypt ( const char *  key, const char *  setting, char *  output, int  size, BF_word  min  )

static

Definition at line 644 of file crypt_blowfish.c.

BF_decode()

static int BF_decode ( BF_word *  dst, const char *  src, int  size  )

static

Definition at line 385 of file crypt_blowfish.c.

BF_encode()

static void BF_encode ( char *  dst, const BF_word *  src, int  size  )

static

Definition at line 409 of file crypt_blowfish.c.

BF_set_key()

static void BF_set_key ( const char *  key, BF_key  expanded, BF_key  initial, unsigned char  flags  )

static

Definition at line 543 of file crypt_blowfish.c.

BF_swap()

static void BF_swap ( BF_word *  x, int  count  )

static

Definition at line 441 of file crypt_blowfish.c.

Variable Documentation

BF_atoi64

unsigned char BF_atoi64[0x60]

static

Initial value:

= {
    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 0, 1,
    54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 64, 64, 64, 64, 64,
    64, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
    17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 64, 64, 64, 64, 64,
    64, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,
    43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 64, 64, 64, 64, 64
}

Definition at line 367 of file crypt_blowfish.c.

BF_init_state

BF_ctx BF_init_state

static

Definition at line 92 of file crypt_blowfish.c.

BF_itoa64

unsigned char BF_itoa64[64+1]

static

Initial value:

=
    "./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"

Definition at line 364 of file crypt_blowfish.c.

BF_magic_w

BF_word BF_magic_w[6]

static

Initial value:

= {
    0x4F727068, 0x65616E42, 0x65686F6C,
    0x64657253, 0x63727944, 0x6F756274
}

Definition at line 84 of file crypt_blowfish.c.