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/* $OpenBSD: modes_local.h,v 1.2 2023/07/08 14:55:36 beck Exp $ */
/* ====================================================================
* Copyright (c) 2010 The OpenSSL Project. All rights reserved.
*
* Redistribution and use is governed by OpenSSL license.
* ====================================================================
*/
#include <endian.h>
#include <openssl/opensslconf.h>
#include <openssl/modes.h>
__BEGIN_HIDDEN_DECLS
#if defined(_LP64)
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;
#if !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__))
# 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
#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;
};
__END_HIDDEN_DECLS
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