modes_lcl.h revision 279264 
1/* ====================================================================
2 * Copyright (c) 2010 The OpenSSL Project.  All rights reserved.
3 *
4 * Redistribution and use is governed by OpenSSL license.
5 * ====================================================================
6 */
7
8#include <openssl/modes.h>
9
10
11#if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
12typedef __int64 i64;
13typedef unsigned __int64 u64;
14#define U64(C) C##UI64
15#elif defined(__arch64__)
16typedef long i64;
17typedef unsigned long u64;
18#define U64(C) C##UL
19#else
20typedef long long i64;
21typedef unsigned long long u64;
22#define U64(C) C##ULL
23#endif
24
25typedef unsigned int u32;
26typedef unsigned char u8;
27
28#define STRICT_ALIGNMENT 1
29#if defined(__i386)	|| defined(__i386__)	|| \
30    defined(__x86_64)	|| defined(__x86_64__)	|| \
31    defined(_M_IX86)	|| defined(_M_AMD64)	|| defined(_M_X64) || \
32    defined(__s390__)	|| defined(__s390x__)
33# undef STRICT_ALIGNMENT
34#endif
35
36#if !defined(PEDANTIC) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
37#if defined(__GNUC__) && __GNUC__>=2
38# if defined(__x86_64) || defined(__x86_64__)
39#  define BSWAP8(x) ({	u64 ret=(x);			\
40			asm ("bswapq %0"		\
41			: "+r"(ret));	ret;		})
42#  define BSWAP4(x) ({	u32 ret=(x);			\
43			asm ("bswapl %0"		\
44			: "+r"(ret));	ret;		})
45# elif (defined(__i386) || defined(__i386__)) && !defined(I386_ONLY)
46#  define BSWAP8(x) ({	u32 lo=(u64)(x)>>32,hi=(x);	\
47			asm ("bswapl %0; bswapl %1"	\
48			: "+r"(hi),"+r"(lo));		\
49			(u64)hi<<32|lo;			})
50#  define BSWAP4(x) ({	u32 ret=(x);			\
51			asm ("bswapl %0"		\
52			: "+r"(ret));	ret;		})
53# elif (defined(__arm__) || defined(__arm)) && !defined(STRICT_ALIGNMENT)
54#  define BSWAP8(x) ({	u32 lo=(u64)(x)>>32,hi=(x);	\
55			asm ("rev %0,%0; rev %1,%1"	\
56			: "+r"(hi),"+r"(lo));		\
57			(u64)hi<<32|lo;			})
58#  define BSWAP4(x) ({	u32 ret;			\
59			asm ("rev %0,%1"		\
60			: "=r"(ret) : "r"((u32)(x)));	\
61			ret;				})
62# endif
63#elif defined(_MSC_VER)
64# if _MSC_VER>=1300
65#  pragma intrinsic(_byteswap_uint64,_byteswap_ulong)
66#  define BSWAP8(x)	_byteswap_uint64((u64)(x))
67#  define BSWAP4(x)	_byteswap_ulong((u32)(x))
68# elif defined(_M_IX86)
69   __inline u32 _bswap4(u32 val) {
70	_asm mov eax,val
71	_asm bswap eax
72   }
73#  define BSWAP4(x)	_bswap4(x)
74# endif
75#endif
76#endif
77
78#if defined(BSWAP4) && !defined(STRICT_ALIGNMENT)
79#define GETU32(p)	BSWAP4(*(const u32 *)(p))
80#define PUTU32(p,v)	*(u32 *)(p) = BSWAP4(v)
81#else
82#define GETU32(p)	((u32)(p)[0]<<24|(u32)(p)[1]<<16|(u32)(p)[2]<<8|(u32)(p)[3])
83#define PUTU32(p,v)	((p)[0]=(u8)((v)>>24),(p)[1]=(u8)((v)>>16),(p)[2]=(u8)((v)>>8),(p)[3]=(u8)(v))
84#endif
85
86/* GCM definitions */
87
88typedef struct { u64 hi,lo; } u128;
89
90#ifdef	TABLE_BITS
91#undef	TABLE_BITS
92#endif
93/*
94 * Even though permitted values for TABLE_BITS are 8, 4 and 1, it should
95 * never be set to 8 [or 1]. For further information see gcm128.c.
96 */
97#define	TABLE_BITS 4
98
99struct gcm128_context {
100	/* Following 6 names follow names in GCM specification */
101	union { u64 u[2]; u32 d[4]; u8 c[16]; size_t t[16/sizeof(size_t)]; }
102	  Yi,EKi,EK0,len,Xi,H;
103	/* Relative position of Xi, H and pre-computed Htable is used
104	 * in some assembler modules, i.e. don't change the order! */
105#if TABLE_BITS==8
106	u128 Htable[256];
107#else
108	u128 Htable[16];
109	void (*gmult)(u64 Xi[2],const u128 Htable[16]);
110	void (*ghash)(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
111#endif
112	unsigned int mres, ares;
113	block128_f block;
114	void *key;
115};
116
117struct xts128_context {
118	void      *key1, *key2;
119	block128_f block1,block2;
120};
121
122struct ccm128_context {
123	union { u64 u[2]; u8 c[16]; } nonce, cmac;
124	u64 blocks;
125	block128_f block;
126	void *key;
127};
128
129