1/* $OpenBSD: modes_local.h,v 1.2 2023/07/08 14:55:36 beck Exp $ */ 2/* ==================================================================== 3 * Copyright (c) 2010 The OpenSSL Project. All rights reserved. 4 * 5 * Redistribution and use is governed by OpenSSL license. 6 * ==================================================================== 7 */ 8 9#include <endian.h> 10 11#include <openssl/opensslconf.h> 12 13#include <openssl/modes.h> 14 15__BEGIN_HIDDEN_DECLS 16 17#if defined(_LP64) 18typedef long i64; 19typedef unsigned long u64; 20#define U64(C) C##UL 21#else 22typedef long long i64; 23typedef unsigned long long u64; 24#define U64(C) C##ULL 25#endif 26 27typedef unsigned int u32; 28typedef unsigned char u8; 29 30#if !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) 31#if defined(__GNUC__) && __GNUC__>=2 32# if defined(__x86_64) || defined(__x86_64__) 33# define BSWAP8(x) ({ u64 ret=(x); \ 34 asm ("bswapq %0" \ 35 : "+r"(ret)); ret; }) 36# define BSWAP4(x) ({ u32 ret=(x); \ 37 asm ("bswapl %0" \ 38 : "+r"(ret)); ret; }) 39# elif (defined(__i386) || defined(__i386__)) 40# define BSWAP8(x) ({ u32 lo=(u64)(x)>>32,hi=(x); \ 41 asm ("bswapl %0; bswapl %1" \ 42 : "+r"(hi),"+r"(lo)); \ 43 (u64)hi<<32|lo; }) 44# define BSWAP4(x) ({ u32 ret=(x); \ 45 asm ("bswapl %0" \ 46 : "+r"(ret)); ret; }) 47# elif (defined(__arm__) || defined(__arm)) && !defined(__STRICT_ALIGNMENT) 48# define BSWAP8(x) ({ u32 lo=(u64)(x)>>32,hi=(x); \ 49 asm ("rev %0,%0; rev %1,%1" \ 50 : "+r"(hi),"+r"(lo)); \ 51 (u64)hi<<32|lo; }) 52# define BSWAP4(x) ({ u32 ret; \ 53 asm ("rev %0,%1" \ 54 : "=r"(ret) : "r"((u32)(x))); \ 55 ret; }) 56# endif 57#endif 58#endif 59 60#if defined(BSWAP4) && !defined(__STRICT_ALIGNMENT) 61#define GETU32(p) BSWAP4(*(const u32 *)(p)) 62#define PUTU32(p,v) *(u32 *)(p) = BSWAP4(v) 63#else 64#define GETU32(p) ((u32)(p)[0]<<24|(u32)(p)[1]<<16|(u32)(p)[2]<<8|(u32)(p)[3]) 65#define PUTU32(p,v) ((p)[0]=(u8)((v)>>24),(p)[1]=(u8)((v)>>16),(p)[2]=(u8)((v)>>8),(p)[3]=(u8)(v)) 66#endif 67 68/* GCM definitions */ 69 70typedef struct { 71 u64 hi, lo; 72} u128; 73 74#ifdef TABLE_BITS 75#undef TABLE_BITS 76#endif 77/* 78 * Even though permitted values for TABLE_BITS are 8, 4 and 1, it should 79 * never be set to 8 [or 1]. For further information see gcm128.c. 80 */ 81#define TABLE_BITS 4 82 83struct gcm128_context { 84 /* Following 6 names follow names in GCM specification */ 85 union { 86 u64 u[2]; 87 u32 d[4]; 88 u8 c[16]; 89 size_t t[16/sizeof(size_t)]; 90 } Yi, EKi, EK0, len, Xi, H; 91 /* Relative position of Xi, H and pre-computed Htable is used 92 * in some assembler modules, i.e. don't change the order! */ 93#if TABLE_BITS==8 94 u128 Htable[256]; 95#else 96 u128 Htable[16]; 97 void (*gmult)(u64 Xi[2], const u128 Htable[16]); 98 void (*ghash)(u64 Xi[2], const u128 Htable[16], const u8 *inp, 99 size_t len); 100#endif 101 unsigned int mres, ares; 102 block128_f block; 103 void *key; 104}; 105 106struct xts128_context { 107 void *key1, *key2; 108 block128_f block1, block2; 109}; 110 111struct ccm128_context { 112 union { 113 u64 u[2]; 114 u8 c[16]; 115 } nonce, cmac; 116 u64 blocks; 117 block128_f block; 118 void *key; 119}; 120 121__END_HIDDEN_DECLS 122