Reorganize private crypto header files

Currently, there are two different directories which contain internal
header files of libcrypto which are meant to be shared internally:

While header files in 'include/internal' are intended to be shared
between libcrypto and libssl, the files in 'crypto/include/internal'
are intended to be shared inside libcrypto only.

To make things complicated, the include search path is set up in such
a way that the directive #include "internal/file.h" could refer to
a file in either of these two directoroes. This makes it necessary
in some cases to add a '_int.h' suffix to some files to resolve this
ambiguity:

  #include "internal/file.h"      # located in 'include/internal'
  #include "internal/file_int.h"  # located in 'crypto/include/internal'

This commit moves the private crypto headers from

  'crypto/include/internal'  to  'include/crypto'

As a result, the include directives become unambiguous

  #include "internal/file.h"       # located in 'include/internal'
  #include "crypto/file.h"         # located in 'include/crypto'

hence the superfluous '_int.h' suffixes can be stripped.

The files 'store_int.h' and 'store.h' need to be treated specially;
they are joined into a single file.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9333)

1 files changed, 220 insertions, 0 deletions

diff --git a/include/crypto/modes.h b/include/crypto/modes.h
new file mode 100644
index 0000000000..08e4ffae74
--- /dev/null
+++ b/include/crypto/modes.h
@@ -0,0 +1,220 @@
+/*
+ * Copyright 2010-2019 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/* TODO(3.0) Move this header into provider when dependencies are removed */
+#include <openssl/modes.h>
+
+#if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
+typedef __int64 i64;
+typedef unsigned __int64 u64;
+# define U64(C) C##UI64
+#elif defined(__arch64__)
+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;
+
+#define STRICT_ALIGNMENT 1
+#ifndef PEDANTIC
+# if defined(__i386)    || defined(__i386__)    || \
+     defined(__x86_64)  || defined(__x86_64__)  || \
+     defined(_M_IX86)   || defined(_M_AMD64)    || defined(_M_X64) || \
+     defined(__aarch64__)                       || \
+     defined(__s390__)  || defined(__s390x__)
+#  undef STRICT_ALIGNMENT
+# endif
+#endif
+
+#if !defined(PEDANTIC) && !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__)) && !defined(I386_ONLY)
+#   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(__aarch64__)
+#   define BSWAP8(x) ({ u64 ret_;                       \
+                        asm ("rev %0,%1"                \
+                        : "=r"(ret_) : "r"(x)); ret_;   })
+#   define BSWAP4(x) ({ u32 ret_;                       \
+                        asm ("rev %w0,%w1"              \
+                        : "=r"(ret_) : "r"(x)); 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
+# elif defined(_MSC_VER)
+#  if _MSC_VER>=1300
+#   include <stdlib.h>
+#   pragma intrinsic(_byteswap_uint64,_byteswap_ulong)
+#   define BSWAP8(x)    _byteswap_uint64((u64)(x))
+#   define BSWAP4(x)    _byteswap_ulong((u32)(x))
+#  elif defined(_M_IX86)
+__inline u32 _bswap4(u32 val)
+{
+_asm mov eax, val _asm bswap eax}
+#   define BSWAP4(x)    _bswap4(x)
+#  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;
+#if !defined(OPENSSL_SMALL_FOOTPRINT)
+    unsigned char Xn[48];
+#endif
+};
+
+/*
+ * The maximum permitted number of cipher blocks per data unit in XTS mode.
+ * Reference IEEE Std 1619-2018.
+ */
+#define XTS_MAX_BLOCKS_PER_DATA_UNIT            (1<<20)
+
+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;
+};
+
+#ifndef OPENSSL_NO_OCB
+
+typedef union {
+    u64 a[2];
+    unsigned char c[16];
+} OCB_BLOCK;
+# define ocb_block16_xor(in1,in2,out) \
+    ( (out)->a[0]=(in1)->a[0]^(in2)->a[0], \
+      (out)->a[1]=(in1)->a[1]^(in2)->a[1] )
+# if STRICT_ALIGNMENT
+#  define ocb_block16_xor_misaligned(in1,in2,out) \
+    ocb_block_xor((in1)->c,(in2)->c,16,(out)->c)
+# else
+#  define ocb_block16_xor_misaligned ocb_block16_xor
+# endif
+
+struct ocb128_context {
+    /* Need both encrypt and decrypt key schedules for decryption */
+    block128_f encrypt;
+    block128_f decrypt;
+    void *keyenc;
+    void *keydec;
+    ocb128_f stream;    /* direction dependent */
+    /* Key dependent variables. Can be reused if key remains the same */
+    size_t l_index;
+    size_t max_l_index;
+    OCB_BLOCK l_star;
+    OCB_BLOCK l_dollar;
+    OCB_BLOCK *l;
+    /* Must be reset for each session */
+    struct {
+        u64 blocks_hashed;
+        u64 blocks_processed;
+        OCB_BLOCK offset_aad;
+        OCB_BLOCK sum;
+        OCB_BLOCK offset;
+        OCB_BLOCK checksum;
+    } sess;
+};
+#endif                          /* OPENSSL_NO_OCB */
+
+#ifndef OPENSSL_NO_SIV
+
+#define SIV_LEN 16
+
+typedef union siv_block_u {
+    uint64_t word[SIV_LEN/sizeof(uint64_t)];
+    unsigned char byte[SIV_LEN];
+} SIV_BLOCK;
+
+struct siv128_context {
+    /* d stores intermediate results of S2V; it corresponds to D from the
+       pseudocode in section 2.4 of RFC 5297. */
+    SIV_BLOCK d;
+    SIV_BLOCK tag;
+    EVP_CIPHER_CTX *cipher_ctx;
+    EVP_MAC *mac;
+    EVP_MAC_CTX *mac_ctx_init;
+    int final_ret;
+    int crypto_ok;
+};
+
+#endif /* OPENSSL_NO_SIV */