Referencia del Archivo src/libdigidoc/openssl/crypto/des/des_locl.h

#include <openssl/e_os2.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <math.h>
#include <openssl/des.h>

Ir al código fuente de este archivo.

'defines'
#define	ITERATIONS   16
#define	HALF_ITERATIONS   8
#define	MAXWRITE   (1024*16)
#define	BSIZE   (MAXWRITE+4)
#define	c2l(c, l)
#define	c2ln(c, l1, l2, n)
#define	l2c(l, c)
#define	HDRSIZE   4
#define	n2l(c, l)
#define	l2n(l, c)
#define	l2cn(l1, l2, c, n)
#define	ROTATE(a, n)   (((a)>>(n))+((a)<<(32-(n))))
#define	LOAD_DATA_tmp(a, b, c, d, e, f)   LOAD_DATA(a,b,c,d,e,f,g)
#define	LOAD_DATA(R, S, u, t, E0, E1, tmp)
#define	D_ENCRYPT(LL, R, S)
#define	PERM_OP(a, b, t, n, m)
#define	IP(l, r)
#define	FP(l, r)
Funciones
void	fcrypt_body (DES_LONG *out, DES_key_schedule *ks, DES_LONG Eswap0, DES_LONG Eswap1)
Variables
const DES_LONG	DES_SPtrans [8][64]

---

Documentación de los 'defines'

#define BSIZE   (MAXWRITE+4)

#define c2l	(		c,
			l
	)

Valor:

(l =((DES_LONG)(*((c)++)))    , \
                         l|=((DES_LONG)(*((c)++)))<< 8L, \
                         l|=((DES_LONG)(*((c)++)))<<16L, \
                         l|=((DES_LONG)(*((c)++)))<<24L)

#define c2ln	(		c,
			l1,
			l2,
			n
	)

Valor:

{ \
                        c+=n; \
                        l1=l2=0; \
                        switch (n) { \
                        case 8: l2 =((DES_LONG)(*(--(c))))<<24L; \
                        case 7: l2|=((DES_LONG)(*(--(c))))<<16L; \
                        case 6: l2|=((DES_LONG)(*(--(c))))<< 8L; \
                        case 5: l2|=((DES_LONG)(*(--(c))));     \
                        case 4: l1 =((DES_LONG)(*(--(c))))<<24L; \
                        case 3: l1|=((DES_LONG)(*(--(c))))<<16L; \
                        case 2: l1|=((DES_LONG)(*(--(c))))<< 8L; \
                        case 1: l1|=((DES_LONG)(*(--(c))));     \
                                } \
                        }

#define D_ENCRYPT	(		LL,
			R,
			S
	)

Valor:

{\
        LOAD_DATA_tmp(R,S,u,t,E0,E1); \
        t=ROTATE(t,4); \
        LL^=\
                DES_SPtrans[0][(u>> 2L)&0x3f]^ \
                DES_SPtrans[2][(u>>10L)&0x3f]^ \
                DES_SPtrans[4][(u>>18L)&0x3f]^ \
                DES_SPtrans[6][(u>>26L)&0x3f]^ \
                DES_SPtrans[1][(t>> 2L)&0x3f]^ \
                DES_SPtrans[3][(t>>10L)&0x3f]^ \
                DES_SPtrans[5][(t>>18L)&0x3f]^ \
                DES_SPtrans[7][(t>>26L)&0x3f]; }

#define FP	(		l,
			r
	)

Valor:

{ \
        register DES_LONG tt; \
        PERM_OP(l,r,tt, 1,0x55555555L); \
        PERM_OP(r,l,tt, 8,0x00ff00ffL); \
        PERM_OP(l,r,tt, 2,0x33333333L); \
        PERM_OP(r,l,tt,16,0x0000ffffL); \
        PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \
        }

#define HALF_ITERATIONS   8

#define HDRSIZE   4

#define IP	(		l,
			r
	)

Valor:

{ \
        register DES_LONG tt; \
        PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \
        PERM_OP(l,r,tt,16,0x0000ffffL); \
        PERM_OP(r,l,tt, 2,0x33333333L); \
        PERM_OP(l,r,tt, 8,0x00ff00ffL); \
        PERM_OP(r,l,tt, 1,0x55555555L); \
        }

#define ITERATIONS   16

#define l2c	(		l,
			c
	)

Valor:

(*((c)++)=(unsigned char)(((l)     )&0xff), \
                         *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
                         *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
                         *((c)++)=(unsigned char)(((l)>>24L)&0xff))

#define l2cn	(		l1,
			l2,
			c,
			n
	)

Valor:

{ \
                        c+=n; \
                        switch (n) { \
                        case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
                        case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
                        case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
                        case 5: *(--(c))=(unsigned char)(((l2)     )&0xff); \
                        case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
                        case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
                        case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
                        case 1: *(--(c))=(unsigned char)(((l1)     )&0xff); \
                                } \
                        }

#define l2n	(		l,
			c
	)

Valor:

(*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
                         *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
                         *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
                         *((c)++)=(unsigned char)(((l)     )&0xff))

#define LOAD_DATA	(		R,
			S,
			u,
			t,
			E0,
			E1,
			tmp
	)

Valor:

u=R^s[S  ]; \
        t=R^s[S+1]

#define LOAD_DATA_tmp	(		a,
			b,
			c,
			d,
			e,
			f
	)		LOAD_DATA(a,b,c,d,e,f,g)

#define MAXWRITE   (1024*16)

#define n2l	(		c,
			l
	)

Valor:

(l =((DES_LONG)(*((c)++)))<<24L, \
                         l|=((DES_LONG)(*((c)++)))<<16L, \
                         l|=((DES_LONG)(*((c)++)))<< 8L, \
                         l|=((DES_LONG)(*((c)++))))

#define PERM_OP	(		a,
			b,
			t,
			n,
			m
	)

Valor:

((t)=((((a)>>(n))^(b))&(m)),\
        (b)^=(t),\
        (a)^=((t)<<(n)))

#define ROTATE	(		a,
			n
	)		(((a)>>(n))+((a)<<(32-(n))))

---

Documentación de las funciones

void fcrypt_body	(	DES_LONG *	out,
		DES_key_schedule *	ks,
		DES_LONG	Eswap0,
		DES_LONG	Eswap1
	)

---

Documentación de las variables

const DES_LONG DES_SPtrans[8][64]