diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c
index 5126696..812511b 100644
--- a/arch/s390/crypto/aes_s390.c
+++ b/arch/s390/crypto/aes_s390.c
@@ -16,17 +16,12 @@
  *
  */
 
+#include <crypto/aes.h>
 #include <crypto/algapi.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include "crypt_s390.h"
 
-#define AES_MIN_KEY_SIZE	16
-#define AES_MAX_KEY_SIZE	32
-
-/* data block size for all key lengths */
-#define AES_BLOCK_SIZE		16
-
 #define AES_KEYLEN_128		1
 #define AES_KEYLEN_192		2
 #define AES_KEYLEN_256		4
diff --git a/arch/x86/crypto/aes_32.c b/arch/x86/crypto/aes_32.c
index 49aad93..9b0ab50 100644
--- a/arch/x86/crypto/aes_32.c
+++ b/arch/x86/crypto/aes_32.c
@@ -38,6 +38,7 @@
  */
 
 #include <asm/byteorder.h>
+#include <crypto/aes.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -48,9 +49,6 @@
 asmlinkage void aes_enc_blk(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 asmlinkage void aes_dec_blk(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 
-#define AES_MIN_KEY_SIZE	16
-#define AES_MAX_KEY_SIZE	32
-#define AES_BLOCK_SIZE		16
 #define AES_KS_LENGTH		4 * AES_BLOCK_SIZE
 #define RC_LENGTH		29
 
diff --git a/arch/x86/crypto/aes_64.c b/arch/x86/crypto/aes_64.c
index 5cdb13e..0b38a4c 100644
--- a/arch/x86/crypto/aes_64.c
+++ b/arch/x86/crypto/aes_64.c
@@ -54,6 +54,7 @@
 */
 
 #include <asm/byteorder.h>
+#include <crypto/aes.h>
 #include <linux/bitops.h>
 #include <linux/crypto.h>
 #include <linux/errno.h>
@@ -61,11 +62,6 @@
 #include <linux/module.h>
 #include <linux/types.h>
 
-#define AES_MIN_KEY_SIZE	16
-#define AES_MAX_KEY_SIZE	32
-
-#define AES_BLOCK_SIZE		16
-
 /*
  * #define byte(x, nr) ((unsigned char)((x) >> (nr*8)))
  */
diff --git a/crypto/aes_generic.c b/crypto/aes_generic.c
index 9401dca..6683260 100644
--- a/crypto/aes_generic.c
+++ b/crypto/aes_generic.c
@@ -52,6 +52,7 @@
     s/RIJNDAEL(d_key)/D_KEY/g
 */
 
+#include <crypto/aes.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/types.h>
@@ -59,11 +60,6 @@
 #include <linux/crypto.h>
 #include <asm/byteorder.h>
 
-#define AES_MIN_KEY_SIZE	16
-#define AES_MAX_KEY_SIZE	32
-
-#define AES_BLOCK_SIZE		16
-
 /*
  * #define byte(x, nr) ((unsigned char)((x) >> (nr*8))) 
  */
diff --git a/drivers/crypto/geode-aes.c b/drivers/crypto/geode-aes.c
index fa4c990..5008a1c 100644
--- a/drivers/crypto/geode-aes.c
+++ b/drivers/crypto/geode-aes.c
@@ -13,6 +13,7 @@
 #include <linux/crypto.h>
 #include <linux/spinlock.h>
 #include <crypto/algapi.h>
+#include <crypto/aes.h>
 
 #include <asm/io.h>
 #include <asm/delay.h>
diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c
index 5f7e718..c33334a 100644
--- a/drivers/crypto/padlock-aes.c
+++ b/drivers/crypto/padlock-aes.c
@@ -44,6 +44,7 @@
  */
 
 #include <crypto/algapi.h>
+#include <crypto/aes.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/types.h>
@@ -53,9 +54,6 @@
 #include <asm/byteorder.h>
 #include "padlock.h"
 
-#define AES_MIN_KEY_SIZE	16	/* in uint8_t units */
-#define AES_MAX_KEY_SIZE	32	/* ditto */
-#define AES_BLOCK_SIZE		16	/* ditto */
 #define AES_EXTENDED_KEY_SIZE	64	/* in uint32_t units */
 #define AES_EXTENDED_KEY_SIZE_B	(AES_EXTENDED_KEY_SIZE * sizeof(uint32_t))
 
diff --git a/include/crypto/aes.h b/include/crypto/aes.h
new file mode 100644
index 0000000..9ff842f
--- /dev/null
+++ b/include/crypto/aes.h
@@ -0,0 +1,15 @@
+/*
+ * Common values for AES algorithms
+ */
+
+#ifndef _CRYPTO_AES_H
+#define _CRYPTO_AES_H
+
+#define AES_MIN_KEY_SIZE	16
+#define AES_MAX_KEY_SIZE	32
+#define AES_KEYSIZE_128		16
+#define AES_KEYSIZE_192		24
+#define AES_KEYSIZE_256		32
+#define AES_BLOCK_SIZE		16
+
+#endif