1 /* $OpenBSD: modes_lcl.h,v 1.7 2014/06/12 15:49:30 deraadt 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 <machine/endian.h> 10 11 #include <openssl/opensslconf.h> 12 13 #include <openssl/modes.h> 14 15 #if defined(_LP64) 16 typedef long i64; 17 typedef unsigned long u64; 18 #define U64(C) C##UL 19 #else 20 typedef long long i64; 21 typedef unsigned long long u64; 22 #define U64(C) C##ULL 23 #endif 24 25 typedef unsigned int u32; 26 typedef unsigned char u8; 27 28 #if !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) 29 #if defined(__GNUC__) && __GNUC__>=2 30 # if defined(__x86_64) || defined(__x86_64__) 31 # define BSWAP8(x) ({ u64 ret=(x); \ 32 asm ("bswapq %0" \ 33 : "+r"(ret)); ret; }) 34 # define BSWAP4(x) ({ u32 ret=(x); \ 35 asm ("bswapl %0" \ 36 : "+r"(ret)); ret; }) 37 # elif (defined(__i386) || defined(__i386__)) && !defined(I386_ONLY) 38 # define BSWAP8(x) ({ u32 lo=(u64)(x)>>32,hi=(x); \ 39 asm ("bswapl %0; bswapl %1" \ 40 : "+r"(hi),"+r"(lo)); \ 41 (u64)hi<<32|lo; }) 42 # define BSWAP4(x) ({ u32 ret=(x); \ 43 asm ("bswapl %0" \ 44 : "+r"(ret)); ret; }) 45 # elif (defined(__arm__) || defined(__arm)) && !defined(__STRICT_ALIGNMENT) 46 # define BSWAP8(x) ({ u32 lo=(u64)(x)>>32,hi=(x); \ 47 asm ("rev %0,%0; rev %1,%1" \ 48 : "+r"(hi),"+r"(lo)); \ 49 (u64)hi<<32|lo; }) 50 # define BSWAP4(x) ({ u32 ret; \ 51 asm ("rev %0,%1" \ 52 : "=r"(ret) : "r"((u32)(x))); \ 53 ret; }) 54 # endif 55 #endif 56 #endif 57 58 #if defined(BSWAP4) && !defined(__STRICT_ALIGNMENT) 59 #define GETU32(p) BSWAP4(*(const u32 *)(p)) 60 #define PUTU32(p,v) *(u32 *)(p) = BSWAP4(v) 61 #else 62 #define GETU32(p) ((u32)(p)[0]<<24|(u32)(p)[1]<<16|(u32)(p)[2]<<8|(u32)(p)[3]) 63 #define PUTU32(p,v) ((p)[0]=(u8)((v)>>24),(p)[1]=(u8)((v)>>16),(p)[2]=(u8)((v)>>8),(p)[3]=(u8)(v)) 64 #endif 65 66 /* GCM definitions */ 67 68 typedef struct { u64 hi,lo; } u128; 69 70 #ifdef TABLE_BITS 71 #undef TABLE_BITS 72 #endif 73 /* 74 * Even though permitted values for TABLE_BITS are 8, 4 and 1, it should 75 * never be set to 8 [or 1]. For further information see gcm128.c. 76 */ 77 #define TABLE_BITS 4 78 79 struct gcm128_context { 80 /* Following 6 names follow names in GCM specification */ 81 union { u64 u[2]; u32 d[4]; u8 c[16]; size_t t[16/sizeof(size_t)]; } 82 Yi,EKi,EK0,len,Xi,H; 83 /* Relative position of Xi, H and pre-computed Htable is used 84 * in some assembler modules, i.e. don't change the order! */ 85 #if TABLE_BITS==8 86 u128 Htable[256]; 87 #else 88 u128 Htable[16]; 89 void (*gmult)(u64 Xi[2],const u128 Htable[16]); 90 void (*ghash)(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len); 91 #endif 92 unsigned int mres, ares; 93 block128_f block; 94 void *key; 95 }; 96 97 struct xts128_context { 98 void *key1, *key2; 99 block128_f block1,block2; 100 }; 101 102 struct ccm128_context { 103 union { u64 u[2]; u8 c[16]; } nonce, cmac; 104 u64 blocks; 105 block128_f block; 106 void *key; 107 }; 108 109