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, 37 insertions, 0 deletions

diff --git a/include/crypto/sm4.h b/include/crypto/sm4.h
new file mode 100644
index 0000000000..f2e1728773
--- /dev/null
+++ b/include/crypto/sm4.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2017 Ribose Inc. 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
+ */
+
+#ifndef HEADER_SM4_H
+# define HEADER_SM4_H
+
+# include <openssl/opensslconf.h>
+# include <openssl/e_os2.h>
+
+# ifdef OPENSSL_NO_SM4
+#  error SM4 is disabled.
+# endif
+
+# define SM4_ENCRYPT     1
+# define SM4_DECRYPT     0
+
+# define SM4_BLOCK_SIZE    16
+# define SM4_KEY_SCHEDULE  32
+
+typedef struct SM4_KEY_st {
+    uint32_t rk[SM4_KEY_SCHEDULE];
+} SM4_KEY;
+
+int SM4_set_key(const uint8_t *key, SM4_KEY *ks);
+
+void SM4_encrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks);
+
+void SM4_decrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks);
+
+#endif