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 11 #if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__) 12 typedef __int64 i64; 13 typedef unsigned __int64 u64; 14 #define U64(C) C##UI64 15 #elif defined(__arch64__) 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 #define STRICT_ALIGNMENT 1 29 #if defined(__i386) || defined(__i386__) || \ 30 defined(__x86_64) || defined(__x86_64__) || \ 31 defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64) || \ 32 defined(__s390__) || defined(__s390x__) || \ 33 ( (defined(__arm__) || defined(__arm)) && \ 34 (defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || \ 35 defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__)) ) 36 # undef STRICT_ALIGNMENT 37 #endif 38 39 #if !defined(PEDANTIC) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) 40 #if defined(__GNUC__) && __GNUC__>=2 41 # if defined(__x86_64) || defined(__x86_64__) 42 # define BSWAP8(x) ({ u64 ret=(x); \ 43 asm ("bswapq %0" \ 44 : "+r"(ret)); ret; }) 45 # define BSWAP4(x) ({ u32 ret=(x); \ 46 asm ("bswapl %0" \ 47 : "+r"(ret)); ret; }) 48 # elif (defined(__i386) || defined(__i386__)) && !defined(I386_ONLY) 49 # define BSWAP8(x) ({ u32 lo=(u64)(x)>>32,hi=(x); \ 50 asm ("bswapl %0; bswapl %1" \ 51 : "+r"(hi),"+r"(lo)); \ 52 (u64)hi<<32|lo; }) 53 # define BSWAP4(x) ({ u32 ret=(x); \ 54 asm ("bswapl %0" \ 55 : "+r"(ret)); ret; }) 56 # elif (defined(__arm__) || defined(__arm)) && !defined(STRICT_ALIGNMENT) 57 # define BSWAP8(x) ({ u32 lo=(u64)(x)>>32,hi=(x); \ 58 asm ("rev %0,%0; rev %1,%1" \ 59 : "+r"(hi),"+r"(lo)); \ 60 (u64)hi<<32|lo; }) 61 # define BSWAP4(x) ({ u32 ret; \ 62 asm ("rev %0,%1" \ 63 : "=r"(ret) : "r"((u32)(x))); \ 64 ret; }) 65 # endif 66 #elif defined(_MSC_VER) 67 # if _MSC_VER>=1300 68 # pragma intrinsic(_byteswap_uint64,_byteswap_ulong) 69 # define BSWAP8(x) _byteswap_uint64((u64)(x)) 70 # define BSWAP4(x) _byteswap_ulong((u32)(x)) 71 # elif defined(_M_IX86) 72 __inline u32 _bswap4(u32 val) { 73 _asm mov eax,val 74 _asm bswap eax 75 } 76 # define BSWAP4(x) _bswap4(x) 77 # endif 78 #endif 79 #endif 80 81 #if defined(BSWAP4) && !defined(STRICT_ALIGNMENT) 82 #define GETU32(p) BSWAP4(*(const u32 *)(p)) 83 #define PUTU32(p,v) *(u32 *)(p) = BSWAP4(v) 84 #else 85 #define GETU32(p) ((u32)(p)[0]<<24|(u32)(p)[1]<<16|(u32)(p)[2]<<8|(u32)(p)[3]) 86 #define PUTU32(p,v) ((p)[0]=(u8)((v)>>24),(p)[1]=(u8)((v)>>16),(p)[2]=(u8)((v)>>8),(p)[3]=(u8)(v)) 87 #endif 88 89 /* GCM definitions */ 90 91 typedef struct { u64 hi,lo; } u128; 92 93 #ifdef TABLE_BITS 94 #undef TABLE_BITS 95 #endif 96 /* 97 * Even though permitted values for TABLE_BITS are 8, 4 and 1, it should 98 * never be set to 8 [or 1]. For further information see gcm128.c. 99 */ 100 #define TABLE_BITS 4 101 102 struct gcm128_context { 103 /* Following 6 names follow names in GCM specification */ 104 union { u64 u[2]; u32 d[4]; u8 c[16]; } Yi,EKi,EK0,len, 105 Xi,H; 106 /* Relative position of Xi, H and pre-computed Htable is used 107 * in some assembler modules, i.e. don't change the order! */ 108 #if TABLE_BITS==8 109 u128 Htable[256]; 110 #else 111 u128 Htable[16]; 112 void (*gmult)(u64 Xi[2],const u128 Htable[16]); 113 void (*ghash)(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len); 114 #endif 115 unsigned int mres, ares; 116 block128_f block; 117 void *key; 118 }; 119 120 struct xts128_context { 121 void *key1, *key2; 122 block128_f block1,block2; 123 }; 124 125 struct ccm128_context { 126 union { u64 u[2]; u8 c[16]; } nonce, cmac; 127 u64 blocks; 128 block128_f block; 129 void *key; 130 }; 131 132
