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/* ====================================================================
* Copyright (c) 2010 The OpenSSL Project. All rights reserved.
*
* Redistribution and use is governed by OpenSSL license.
* ====================================================================
*/
#include <openssl/modes.h>
#if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
typedef __int64 i64;
typedef unsigned __int64 u64;
#define U64(C) C##UI64
#elif defined(__arch64__)
typedef long i64;
typedef unsigned long u64;
#define U64(C) C##UL
#else
typedef long long i64;
typedef unsigned long long u64;
#define U64(C) C##ULL
#endif
typedef unsigned int u32;
typedef unsigned char u8;
#define STRICT_ALIGNMENT 1
#if defined(__i386) || defined(__i386__) || \
defined(__x86_64) || defined(__x86_64__) || \
defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64) || \
defined(__s390__) || defined(__s390x__)
# undef STRICT_ALIGNMENT
#endif
#if !defined(PEDANTIC) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
#if defined(__GNUC__) && __GNUC__>=2
# if defined(__x86_64) || defined(__x86_64__)
# define BSWAP8(x) ({ u64 ret=(x); \
asm ("bswapq %0" \
: "+r"(ret)); ret; })
# define BSWAP4(x) ({ u32 ret=(x); \
asm ("bswapl %0" \
: "+r"(ret)); ret; })
# elif (defined(__i386) || defined(__i386__)) && !defined(I386_ONLY)
# define BSWAP8(x) ({ u32 lo=(u64)(x)>>32,hi=(x); \
asm ("bswapl %0; bswapl %1" \
: "+r"(hi),"+r"(lo)); \
(u64)hi<<32|lo; })
# define BSWAP4(x) ({ u32 ret=(x); \
asm ("bswapl %0" \
: "+r"(ret)); ret; })
# elif (defined(__arm__) || defined(__arm)) && !defined(STRICT_ALIGNMENT)
# define BSWAP8(x) ({ u32 lo=(u64)(x)>>32,hi=(x); \
asm ("rev %0,%0; rev %1,%1" \
: "+r"(hi),"+r"(lo)); \
(u64)hi<<32|lo; })
# define BSWAP4(x) ({ u32 ret; \
asm ("rev %0,%1" \
: "=r"(ret) : "r"((u32)(x))); \
ret; })
# endif
#elif defined(_MSC_VER)
# if _MSC_VER>=1300
# pragma intrinsic(_byteswap_uint64,_byteswap_ulong)
# define BSWAP8(x) _byteswap_uint64((u64)(x))
# define BSWAP4(x) _byteswap_ulong((u32)(x))
# elif defined(_M_IX86)
__inline u32 _bswap4(u32 val) {
_asm mov eax,val
_asm bswap eax
}
# define BSWAP4(x) _bswap4(x)
# endif
#endif
#endif
#if defined(BSWAP4) && !defined(STRICT_ALIGNMENT)
#define GETU32(p) BSWAP4(*(const u32 *)(p))
#define PUTU32(p,v) *(u32 *)(p) = BSWAP4(v)
#else
#define GETU32(p) ((u32)(p)[0]<<24|(u32)(p)[1]<<16|(u32)(p)[2]<<8|(u32)(p)[3])
#define PUTU32(p,v) ((p)[0]=(u8)((v)>>24),(p)[1]=(u8)((v)>>16),(p)[2]=(u8)((v)>>8),(p)[3]=(u8)(v))
#endif
/* GCM definitions */
typedef struct { u64 hi,lo; } u128;
#ifdef TABLE_BITS
#undef TABLE_BITS
#endif
/*
* Even though permitted values for TABLE_BITS are 8, 4 and 1, it should
* never be set to 8 [or 1]. For further information see gcm128.c.
*/
#define TABLE_BITS 4
struct gcm128_context {
/* Following 6 names follow names in GCM specification */
union { u64 u[2]; u32 d[4]; u8 c[16]; size_t t[16/sizeof(size_t)]; }
Yi,EKi,EK0,len,Xi,H;
/* Relative position of Xi, H and pre-computed Htable is used
* in some assembler modules, i.e. don't change the order! */
#if TABLE_BITS==8
u128 Htable[256];
#else
u128 Htable[16];
void (*gmult)(u64 Xi[2],const u128 Htable[16]);
void (*ghash)(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
#endif
unsigned int mres, ares;
block128_f block;
void *key;
};
struct xts128_context {
void *key1, *key2;
block128_f block1,block2;
};
struct ccm128_context {
union { u64 u[2]; u8 c[16]; } nonce, cmac;
u64 blocks;
block128_f block;
void *key;
};