des_locl.h@ 69881

Last change on this file since 69881 was 69881, checked in by vboxsync, 7 years ago
Update OpenSSL to 1.1.0g. bugref:8070: src/libs maintenance
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1	/*
2	* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3	*
4	* Licensed under the OpenSSL license (the "License"). You may not use
5	* this file except in compliance with the License. You can obtain a copy
6	* in the file LICENSE in the source distribution or at
7	* https://www.openssl.org/source/license.html
8	*/
9
10	#ifndef HEADER_DES_LOCL_H
11	# define HEADER_DES_LOCL_H
12
13	# include <openssl/e_os2.h>
14
15	# include <stdio.h>
16	# include <stdlib.h>
17	# include <string.h>
18
19	# include <openssl/des.h>
20
21	# ifdef OPENSSL_BUILD_SHLIBCRYPTO
22	# undef OPENSSL_EXTERN
23	# define OPENSSL_EXTERN OPENSSL_EXPORT
24	# endif
25
26	# define ITERATIONS 16
27	# define HALF_ITERATIONS 8
28
29	/* used in des_read and des_write */
30	# define MAXWRITE (1024*16)
31	# define BSIZE (MAXWRITE+4)
32
33	# define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \
34	l\|=((DES_LONG)(*((c)++)))<< 8L, \
35	l\|=((DES_LONG)(*((c)++)))<<16L, \
36	l\|=((DES_LONG)(*((c)++)))<<24L)
37
38	/* NOTE - c is not incremented as per c2l */
39	# define c2ln(c,l1,l2,n) { \
40	c+=n; \
41	l1=l2=0; \
42	switch (n) { \
43	case 8: l2 =((DES_LONG)(*(--(c))))<<24L; \
44	/* fall thru */ \
45	case 7: l2\|=((DES_LONG)(*(--(c))))<<16L; \
46	/* fall thru */ \
47	case 6: l2\|=((DES_LONG)(*(--(c))))<< 8L; \
48	/* fall thru */ \
49	case 5: l2\|=((DES_LONG)(*(--(c)))); \
50	/* fall thru */ \
51	case 4: l1 =((DES_LONG)(*(--(c))))<<24L; \
52	/* fall thru */ \
53	case 3: l1\|=((DES_LONG)(*(--(c))))<<16L; \
54	/* fall thru */ \
55	case 2: l1\|=((DES_LONG)(*(--(c))))<< 8L; \
56	/* fall thru */ \
57	case 1: l1\|=((DES_LONG)(*(--(c)))); \
58	} \
59	}
60
61	# define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
62	*((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
63	*((c)++)=(unsigned char)(((l)>>16L)&0xff), \
64	*((c)++)=(unsigned char)(((l)>>24L)&0xff))
65
66	/*
67	* replacements for htonl and ntohl since I have no idea what to do when
68	* faced with machines with 8 byte longs.
69	*/
70	# define HDRSIZE 4
71
72	# define n2l(c,l) (l =((DES_LONG)(*((c)++)))<<24L, \
73	l\|=((DES_LONG)(*((c)++)))<<16L, \
74	l\|=((DES_LONG)(*((c)++)))<< 8L, \
75	l\|=((DES_LONG)(*((c)++))))
76
77	# define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
78	*((c)++)=(unsigned char)(((l)>>16L)&0xff), \
79	*((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
80	*((c)++)=(unsigned char)(((l) )&0xff))
81
82	/* NOTE - c is not incremented as per l2c */
83	# define l2cn(l1,l2,c,n) { \
84	c+=n; \
85	switch (n) { \
86	case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
87	/* fall thru */ \
88	case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
89	/* fall thru */ \
90	case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
91	/* fall thru */ \
92	case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
93	/* fall thru */ \
94	case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
95	/* fall thru */ \
96	case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
97	/* fall thru */ \
98	case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
99	/* fall thru */ \
100	case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
101	} \
102	}
103
104	# if (defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER))
105	# define ROTATE(a,n) (_lrotr(a,n))
106	# elif defined(__ICC)
107	# define ROTATE(a,n) (_rotr(a,n))
108	# elif defined(__GNUC__) && __GNUC__>=2 && !defined(__STRICT_ANSI__) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) && !defined(PEDANTIC)
109	# if defined(__i386) \|\| defined(__i386__) \|\| defined(__x86_64) \|\| defined(__x86_64__)
110	# define ROTATE(a,n) ({ register unsigned int ret; \
111	asm ("rorl %1,%0" \
112	: "=r"(ret) \
113	: "I"(n),"0"(a) \
114	: "cc"); \
115	ret; \
116	})
117	# endif
118	# endif
119	# ifndef ROTATE
120	# define ROTATE(a,n) (((a)>>(n))+((a)<<(32-(n))))
121	# endif
122
123	/*
124	* Don't worry about the LOAD_DATA() stuff, that is used by fcrypt() to add
125	* it's little bit to the front
126	*/
127
128	# ifdef DES_FCRYPT
129
130	# define LOAD_DATA_tmp(R,S,u,t,E0,E1) \
131	{ DES_LONG tmp; LOAD_DATA(R,S,u,t,E0,E1,tmp); }
132
133	# define LOAD_DATA(R,S,u,t,E0,E1,tmp) \
134	t=R^(R>>16L); \
135	u=t&E0; t&=E1; \
136	tmp=(u<<16); u^=R^s[S ]; u^=tmp; \
137	tmp=(t<<16); t^=R^s[S+1]; t^=tmp
138	# else
139	# define LOAD_DATA_tmp(a,b,c,d,e,f) LOAD_DATA(a,b,c,d,e,f,g)
140	# define LOAD_DATA(R,S,u,t,E0,E1,tmp) \
141	u=R^s[S ]; \
142	t=R^s[S+1]
143	# endif
144
145	/*
146	* It recently occurred to me that 0^0^0^0^0^0^0 == 0, so there is no reason
147	* to not xor all the sub items together. This potentially saves a register
148	* since things can be xored directly into L
149	*/
150
151	# define D_ENCRYPT(LL,R,S) { \
152	LOAD_DATA_tmp(R,S,u,t,E0,E1); \
153	t=ROTATE(t,4); \
154	LL^= \
155	DES_SPtrans[0][(u>> 2L)&0x3f]^ \
156	DES_SPtrans[2][(u>>10L)&0x3f]^ \
157	DES_SPtrans[4][(u>>18L)&0x3f]^ \
158	DES_SPtrans[6][(u>>26L)&0x3f]^ \
159	DES_SPtrans[1][(t>> 2L)&0x3f]^ \
160	DES_SPtrans[3][(t>>10L)&0x3f]^ \
161	DES_SPtrans[5][(t>>18L)&0x3f]^ \
162	DES_SPtrans[7][(t>>26L)&0x3f]; }
163
164	/*-
165	* IP and FP
166	* The problem is more of a geometric problem that random bit fiddling.
167	0 1 2 3 4 5 6 7 62 54 46 38 30 22 14 6
168	8 9 10 11 12 13 14 15 60 52 44 36 28 20 12 4
169	16 17 18 19 20 21 22 23 58 50 42 34 26 18 10 2
170	24 25 26 27 28 29 30 31 to 56 48 40 32 24 16 8 0
171
172	32 33 34 35 36 37 38 39 63 55 47 39 31 23 15 7
173	40 41 42 43 44 45 46 47 61 53 45 37 29 21 13 5
174	48 49 50 51 52 53 54 55 59 51 43 35 27 19 11 3
175	56 57 58 59 60 61 62 63 57 49 41 33 25 17 9 1
176
177	The output has been subject to swaps of the form
178	0 1 -> 3 1 but the odd and even bits have been put into
179	2 3 2 0
180	different words. The main trick is to remember that
181	t=((l>>size)^r)&(mask);
182	r^=t;
183	l^=(t<<size);
184	can be used to swap and move bits between words.
185
186	So l = 0 1 2 3 r = 16 17 18 19
187	4 5 6 7 20 21 22 23
188	8 9 10 11 24 25 26 27
189	12 13 14 15 28 29 30 31
190	becomes (for size == 2 and mask == 0x3333)
191	t = 2^16 3^17 -- -- l = 0 1 16 17 r = 2 3 18 19
192	6^20 7^21 -- -- 4 5 20 21 6 7 22 23
193	10^24 11^25 -- -- 8 9 24 25 10 11 24 25
194	14^28 15^29 -- -- 12 13 28 29 14 15 28 29
195
196	Thanks for hints from Richard Outerbridge - he told me IP&FP
197	could be done in 15 xor, 10 shifts and 5 ands.
198	When I finally started to think of the problem in 2D
199	I first got ~42 operations without xors. When I remembered
200	how to use xors :-) I got it to its final state.
201	*/
202	# define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
203	(b)^=(t),\
204	(a)^=((t)<<(n)))
205
206	# define IP(l,r) \
207	{ \
208	register DES_LONG tt; \
209	PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \
210	PERM_OP(l,r,tt,16,0x0000ffffL); \
211	PERM_OP(r,l,tt, 2,0x33333333L); \
212	PERM_OP(l,r,tt, 8,0x00ff00ffL); \
213	PERM_OP(r,l,tt, 1,0x55555555L); \
214	}
215
216	# define FP(l,r) \
217	{ \
218	register DES_LONG tt; \
219	PERM_OP(l,r,tt, 1,0x55555555L); \
220	PERM_OP(r,l,tt, 8,0x00ff00ffL); \
221	PERM_OP(l,r,tt, 2,0x33333333L); \
222	PERM_OP(r,l,tt,16,0x0000ffffL); \
223	PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \
224	}
225
226	extern const DES_LONG DES_SPtrans[8][64];
227
228	void fcrypt_body(DES_LONG out, DES_key_schedule ks,
229	DES_LONG Eswap0, DES_LONG Eswap1);
230
231	#endif

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source: vbox/trunk/src/libs/openssl-1.1.0g/crypto/des/des_locl.h@ 69881

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