include/crypto/modes.h

   1 /*
   2  * Copyright 2010-2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 /* TODO(3.0) Move this header into provider when dependencies are removed */
  11 #include <openssl/modes.h>
  12
  13 #if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
  14 typedef __int64 i64;
  15 typedef unsigned __int64 u64;
  16 # define U64(C) C##UI64
  17 #elif defined(__arch64__)
  18 typedef long i64;
  19 typedef unsigned long u64;
  20 # define U64(C) C##UL
  21 #else
  22 typedef long long i64;
  23 typedef unsigned long long u64;
  24 # define U64(C) C##ULL
  25 #endif
  26
  27 typedef unsigned int u32;
  28 typedef unsigned char u8;
  29
  30 #define STRICT_ALIGNMENT 1
  31 #ifndef PEDANTIC
  32 # if defined(__i386)    || defined(__i386__)    || \
  33      defined(__x86_64)  || defined(__x86_64__)  || \
  34      defined(_M_IX86)   || defined(_M_AMD64)    || defined(_M_X64) || \
  35      defined(__aarch64__)                       || \
  36      defined(__s390__)  || defined(__s390x__)
  37 #  undef STRICT_ALIGNMENT
  38 # endif
  39 #endif
  40
  41 #if !defined(PEDANTIC) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
  42 # if defined(__GNUC__) && __GNUC__>=2
  43 #  if defined(__x86_64) || defined(__x86_64__)
  44 #   define BSWAP8(x) ({ u64 ret_=(x);                   \
  45                         asm ("bswapq %0"                \
  46                         : "+r"(ret_));   ret_;          })
  47 #   define BSWAP4(x) ({ u32 ret_=(x);                   \
  48                         asm ("bswapl %0"                \
  49                         : "+r"(ret_));   ret_;          })
  50 #  elif (defined(__i386) || defined(__i386__)) && !defined(I386_ONLY)
  51 #   define BSWAP8(x) ({ u32 lo_=(u64)(x)>>32,hi_=(x);   \
  52                         asm ("bswapl %0; bswapl %1"     \
  53                         : "+r"(hi_),"+r"(lo_));         \
  54                         (u64)hi_<<32|lo_;               })
  55 #   define BSWAP4(x) ({ u32 ret_=(x);                   \
  56                         asm ("bswapl %0"                \
  57                         : "+r"(ret_));   ret_;          })
  58 #  elif defined(__aarch64__)
  59 #   define BSWAP8(x) ({ u64 ret_;                       \
  60                         asm ("rev %0,%1"                \
  61                         : "=r"(ret_) : "r"(x)); ret_;   })
  62 #   define BSWAP4(x) ({ u32 ret_;                       \
  63                         asm ("rev %w0,%w1"              \
  64                         : "=r"(ret_) : "r"(x)); ret_;   })
  65 #  elif (defined(__arm__) || defined(__arm)) && !defined(STRICT_ALIGNMENT)
  66 #   define BSWAP8(x) ({ u32 lo_=(u64)(x)>>32,hi_=(x);   \
  67                         asm ("rev %0,%0; rev %1,%1"     \
  68                         : "+r"(hi_),"+r"(lo_));         \
  69                         (u64)hi_<<32|lo_;               })
  70 #   define BSWAP4(x) ({ u32 ret_;                       \
  71                         asm ("rev %0,%1"                \
  72                         : "=r"(ret_) : "r"((u32)(x)));  \
  73                         ret_;                           })
  74 #  endif
  75 # elif defined(_MSC_VER)
  76 #  if _MSC_VER>=1300
  77 #   include <stdlib.h>
  78 #   pragma intrinsic(_byteswap_uint64,_byteswap_ulong)
  79 #   define BSWAP8(x)    _byteswap_uint64((u64)(x))
  80 #   define BSWAP4(x)    _byteswap_ulong((u32)(x))
  81 #  elif defined(_M_IX86)
  82 __inline u32 _bswap4(u32 val)
  83 {
  84 _asm mov eax, val _asm bswap eax}
  85 #   define BSWAP4(x)    _bswap4(x)
  86 #  endif
  87 # endif
  88 #endif
  89 #if defined(BSWAP4) && !defined(STRICT_ALIGNMENT)
  90 # define GETU32(p)       BSWAP4(*(const u32 *)(p))
  91 # define PUTU32(p,v)     *(u32 *)(p) = BSWAP4(v)
  92 #else
  93 # define GETU32(p)       ((u32)(p)[0]<<24|(u32)(p)[1]<<16|(u32)(p)[2]<<8|(u32)(p)[3])
  94 # define PUTU32(p,v)     ((p)[0]=(u8)((v)>>24),(p)[1]=(u8)((v)>>16),(p)[2]=(u8)((v)>>8),(p)[3]=(u8)(v))
  95 #endif
  96 /*- GCM definitions */ typedef struct {
  97     u64 hi, lo;
  98 } u128;
  99
 100 #ifdef  TABLE_BITS
 101 # undef  TABLE_BITS
 102 #endif
 103 /*
 104  * Even though permitted values for TABLE_BITS are 8, 4 and 1, it should
 105  * never be set to 8 [or 1]. For further information see gcm128.c.
 106  */
 107 #define TABLE_BITS 4
 108
 109 struct gcm128_context {
 110     /* Following 6 names follow names in GCM specification */
 111     union {
 112         u64 u[2];
 113         u32 d[4];
 114         u8 c[16];
 115         size_t t[16 / sizeof(size_t)];
 116     } Yi, EKi, EK0, len, Xi, H;
 117     /*
 118      * Relative position of Xi, H and pre-computed Htable is used in some
 119      * assembler modules, i.e. don't change the order!
 120      */
 121 #if TABLE_BITS==8
 122     u128 Htable[256];
 123 #else
 124     u128 Htable[16];
 125     void (*gmult) (u64 Xi[2], const u128 Htable[16]);
 126     void (*ghash) (u64 Xi[2], const u128 Htable[16], const u8 *inp,
 127                    size_t len);
 128 #endif
 129     unsigned int mres, ares;
 130     block128_f block;
 131     void *key;
 132 #if !defined(OPENSSL_SMALL_FOOTPRINT)
 133     unsigned char Xn[48];
 134 #endif
 135 };
 136
 137 /*
 138  * The maximum permitted number of cipher blocks per data unit in XTS mode.
 139  * Reference IEEE Std 1619-2018.
 140  */
 141 #define XTS_MAX_BLOCKS_PER_DATA_UNIT            (1<<20)
 142
 143 struct xts128_context {
 144     void *key1, *key2;
 145     block128_f block1, block2;
 146 };
 147
 148 struct ccm128_context {
 149     union {
 150         u64 u[2];
 151         u8 c[16];
 152     } nonce, cmac;
 153     u64 blocks;
 154     block128_f block;
 155     void *key;
 156 };
 157
 158 #ifndef OPENSSL_NO_OCB
 159
 160 typedef union {
 161     u64 a[2];
 162     unsigned char c[16];
 163 } OCB_BLOCK;
 164 # define ocb_block16_xor(in1,in2,out) \
 165     ( (out)->a[0]=(in1)->a[0]^(in2)->a[0], \
 166       (out)->a[1]=(in1)->a[1]^(in2)->a[1] )
 167 # if STRICT_ALIGNMENT
 168 #  define ocb_block16_xor_misaligned(in1,in2,out) \
 169     ocb_block_xor((in1)->c,(in2)->c,16,(out)->c)
 170 # else
 171 #  define ocb_block16_xor_misaligned ocb_block16_xor
 172 # endif
 173
 174 struct ocb128_context {
 175     /* Need both encrypt and decrypt key schedules for decryption */
 176     block128_f encrypt;
 177     block128_f decrypt;
 178     void *keyenc;
 179     void *keydec;
 180     ocb128_f stream;    /* direction dependent */
 181     /* Key dependent variables. Can be reused if key remains the same */
 182     size_t l_index;
 183     size_t max_l_index;
 184     OCB_BLOCK l_star;
 185     OCB_BLOCK l_dollar;
 186     OCB_BLOCK *l;
 187     /* Must be reset for each session */
 188     struct {
 189         u64 blocks_hashed;
 190         u64 blocks_processed;
 191         OCB_BLOCK offset_aad;
 192         OCB_BLOCK sum;
 193         OCB_BLOCK offset;
 194         OCB_BLOCK checksum;
 195     } sess;
 196 };
 197 #endif                          /* OPENSSL_NO_OCB */
 198
 199 #ifndef OPENSSL_NO_SIV
 200
 201 #define SIV_LEN 16
 202
 203 typedef union siv_block_u {
 204     uint64_t word[SIV_LEN/sizeof(uint64_t)];
 205     unsigned char byte[SIV_LEN];
 206 } SIV_BLOCK;
 207
 208 struct siv128_context {
 209     /* d stores intermediate results of S2V; it corresponds to D from the
 210        pseudocode in section 2.4 of RFC 5297. */
 211     SIV_BLOCK d;
 212     SIV_BLOCK tag;
 213     EVP_CIPHER_CTX *cipher_ctx;
 214     EVP_MAC *mac;
 215     EVP_MAC_CTX *mac_ctx_init;
 216     int final_ret;
 217     int crypto_ok;
 218 };
 219
 220 #endif /* OPENSSL_NO_SIV */