modes_lcl.h revision 296341 
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#if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
11typedef __int64 i64;
12typedef unsigned __int64 u64;
13# define U64(C) C##UI64
14#elif defined(__arch64__)
15typedef long i64;
16typedef unsigned long u64;
17# define U64(C) C##UL
18#else
19typedef long long i64;
20typedef unsigned long long u64;
21# define U64(C) C##ULL
22#endif
23
24typedef unsigned int u32;
25typedef unsigned char u8;
26
27#define STRICT_ALIGNMENT 1
28#if defined(__i386)     || defined(__i386__)    || \
29    defined(__x86_64)   || defined(__x86_64__)  || \
30    defined(_M_IX86)    || defined(_M_AMD64)    || defined(_M_X64) || \
31    defined(__s390__)   || defined(__s390x__)
32# undef STRICT_ALIGNMENT
33#endif
34
35#if !defined(PEDANTIC) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
36# if defined(__GNUC__) && __GNUC__>=2
37#  if defined(__x86_64) || defined(__x86_64__)
38#   define BSWAP8(x) ({ u64 ret=(x);                    \
39                        asm ("bswapq %0"                \
40                        : "+r"(ret));   ret;            })
41#   define BSWAP4(x) ({ u32 ret=(x);                    \
42                        asm ("bswapl %0"                \
43                        : "+r"(ret));   ret;            })
44#  elif (defined(__i386) || defined(__i386__)) && !defined(I386_ONLY)
45#   define BSWAP8(x) ({ u32 lo=(u64)(x)>>32,hi=(x);     \
46                        asm ("bswapl %0; bswapl %1"     \
47                        : "+r"(hi),"+r"(lo));           \
48                        (u64)hi<<32|lo;                 })
49#   define BSWAP4(x) ({ u32 ret=(x);                    \
50                        asm ("bswapl %0"                \
51                        : "+r"(ret));   ret;            })
52#  elif (defined(__arm__) || defined(__arm)) && !defined(STRICT_ALIGNMENT)
53#   define BSWAP8(x) ({  u32 lo=(u64)(x)>>32,hi=(x);     \
54                        asm ("rev %0,%0; rev %1,%1"     \
55                        : "+r"(hi),"+r"(lo));           \
56                        (u64)hi<<32|lo;                 })
57#   define BSWAP4(x) ({ u32 ret;                        \
58                        asm ("rev %0,%1"                \
59                        : "=r"(ret) : "r"((u32)(x)));   \
60                        ret;                            })
61#  endif
62# elif defined(_MSC_VER)
63#  if _MSC_VER>=1300
64#   pragma intrinsic(_byteswap_uint64,_byteswap_ulong)
65#   define BSWAP8(x)    _byteswap_uint64((u64)(x))
66#   define BSWAP4(x)    _byteswap_ulong((u32)(x))
67#  elif defined(_M_IX86)
68__inline u32 _bswap4(u32 val)
69{
70_asm mov eax, val _asm bswap eax}
71#   define BSWAP4(x)    _bswap4(x)
72#  endif
73# endif
74#endif
75#if defined(BSWAP4) && !defined(STRICT_ALIGNMENT)
76# define GETU32(p)       BSWAP4(*(const u32 *)(p))
77# define PUTU32(p,v)     *(u32 *)(p) = BSWAP4(v)
78#else
79# define GETU32(p)       ((u32)(p)[0]<<24|(u32)(p)[1]<<16|(u32)(p)[2]<<8|(u32)(p)[3])
80# define PUTU32(p,v)     ((p)[0]=(u8)((v)>>24),(p)[1]=(u8)((v)>>16),(p)[2]=(u8)((v)>>8),(p)[3]=(u8)(v))
81#endif
82/*- GCM definitions */ typedef struct {
83    u64 hi, lo;
84} u128;
85
86#ifdef  TABLE_BITS
87# undef  TABLE_BITS
88#endif
89/*
90 * Even though permitted values for TABLE_BITS are 8, 4 and 1, it should
91 * never be set to 8 [or 1]. For further information see gcm128.c.
92 */
93#define TABLE_BITS 4
94
95struct gcm128_context {
96    /* Following 6 names follow names in GCM specification */
97    union {
98        u64 u[2];
99        u32 d[4];
100        u8 c[16];
101        size_t t[16 / sizeof(size_t)];
102    } Yi, EKi, EK0, len, Xi, H;
103    /*
104     * Relative position of Xi, H and pre-computed Htable is used in some
105     * assembler modules, i.e. don't change the order!
106     */
107#if TABLE_BITS==8
108    u128 Htable[256];
109#else
110    u128 Htable[16];
111    void (*gmult) (u64 Xi[2], const u128 Htable[16]);
112    void (*ghash) (u64 Xi[2], const u128 Htable[16], const u8 *inp,
113                   size_t len);
114#endif
115    unsigned int mres, ares;
116    block128_f block;
117    void *key;
118};
119
120struct xts128_context {
121    void *key1, *key2;
122    block128_f block1, block2;
123};
124
125struct ccm128_context {
126    union {
127        u64 u[2];
128        u8 c[16];
129    } nonce, cmac;
130    u64 blocks;
131    block128_f block;
132    void *key;
133};
134