[CRYPTO] aes-generic: Make key generation exportable
This patch exports four tables and the set_key() routine. This ressources
can be shared by other AES implementations (aes-x86_64 for instance).
The decryption key has been turned around (deckey[0] is the first piece
of the key instead of deckey[keylen+20]). The encrypt/decrypt functions
are looking now identical (except they are using different tables and
key).
Signed-off-by: Sebastian Siewior <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
diff --git a/include/crypto/aes.h b/include/crypto/aes.h
index 9ff842f..d480b76 100644
--- a/include/crypto/aes.h
+++ b/include/crypto/aes.h
@@ -5,6 +5,9 @@
#ifndef _CRYPTO_AES_H
#define _CRYPTO_AES_H
+#include <linux/types.h>
+#include <linux/crypto.h>
+
#define AES_MIN_KEY_SIZE 16
#define AES_MAX_KEY_SIZE 32
#define AES_KEYSIZE_128 16
@@ -12,4 +15,17 @@
#define AES_KEYSIZE_256 32
#define AES_BLOCK_SIZE 16
+struct crypto_aes_ctx {
+ u32 key_length;
+ u32 key_enc[60];
+ u32 key_dec[60];
+};
+
+extern u32 crypto_ft_tab[4][256];
+extern u32 crypto_fl_tab[4][256];
+extern u32 crypto_it_tab[4][256];
+extern u32 crypto_il_tab[4][256];
+
+int crypto_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
+ unsigned int key_len);
#endif
