[CRYPTO] des: Create header file for common macros

This patch creates include/crypto/des.h for common macros shared between
DES implementations.

Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

2 files changed, 20 insertions, 7 deletions

diff --git a/crypto/des_generic.c b/crypto/des_generic.c
index 59966d14b8e0..f75eafe1a875 100644
--- a/crypto/des_generic.c
+++ b/crypto/des_generic.c
@@ -20,13 +20,7 @@
 #include <linux/crypto.h>
 #include <linux/types.h>
 
-#define DES_KEY_SIZE            8
-#define DES_EXPKEY_WORDS        32
-#define DES_BLOCK_SIZE          8
-
-#define DES3_EDE_KEY_SIZE       (3 * DES_KEY_SIZE)
-#define DES3_EDE_EXPKEY_WORDS   (3 * DES_EXPKEY_WORDS)
-#define DES3_EDE_BLOCK_SIZE     DES_BLOCK_SIZE
+#include <crypto/des.h>
 
 #define ROL(x, r) ((x) = rol32((x), (r)))
 #define ROR(x, r) ((x) = ror32((x), (r)))
diff --git a/include/crypto/des.h b/include/crypto/des.h
new file mode 100644
index 000000000000..2971c6304ade
--- /dev/null
+++ b/include/crypto/des.h
@@ -0,0 +1,19 @@
+/* 
+ * DES & Triple DES EDE Cipher Algorithms.
+ */
+
+#ifndef __CRYPTO_DES_H
+#define __CRYPTO_DES_H
+
+#define DES_KEY_SIZE            8
+#define DES_EXPKEY_WORDS        32
+#define DES_BLOCK_SIZE          8
+
+#define DES3_EDE_KEY_SIZE       (3 * DES_KEY_SIZE)
+#define DES3_EDE_EXPKEY_WORDS   (3 * DES_EXPKEY_WORDS)
+#define DES3_EDE_BLOCK_SIZE     DES_BLOCK_SIZE
+
+
+extern unsigned long des_ekey(u32 *pe, const u8 *k);
+
+#endif /* __CRYPTO_DES_H */