X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fi386%2Fcrypto%2Faes.c;h=49aad9397f10afe8facc4c13f1d3bc0fa1d7307b;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=5a34ee9e4a515b8a52446cb243e8a0b19b89e986;hpb=5fc42a6ed0ec81088c37caadb45898ae6cd0ad2c;p=linux-2.6.git

diff --git a/arch/i386/crypto/aes.c b/arch/i386/crypto/aes.c
index 5a34ee9e4..49aad9397 100644
--- a/arch/i386/crypto/aes.c
+++ b/arch/i386/crypto/aes.c
@@ -36,6 +36,8 @@
  * Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
  *
  */
+
+#include <asm/byteorder.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -43,8 +45,8 @@
 #include <linux/crypto.h>
 #include <linux/linkage.h>
 
-asmlinkage void aes_enc_blk(const u8 *src, u8 *dst, void *ctx);
-asmlinkage void aes_dec_blk(const u8 *src, u8 *dst, void *ctx);
+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
@@ -59,7 +61,6 @@ struct aes_ctx {
 };
 
 #define WPOLY 0x011b
-#define u32_in(x) le32_to_cpu(*(const u32 *)(x))
 #define bytes2word(b0, b1, b2, b3)  \
 	(((u32)(b3) << 24) | ((u32)(b2) << 16) | ((u32)(b1) << 8) | (b0))
 
@@ -93,12 +94,11 @@ static u32 rcon_tab[RC_LENGTH];
 
 u32 ft_tab[4][256];
 u32 fl_tab[4][256];
-u32 ls_tab[4][256];
-u32 im_tab[4][256];
+static u32 im_tab[4][256];
 u32 il_tab[4][256];
 u32 it_tab[4][256];
 
-void gen_tabs(void)
+static void gen_tabs(void)
 {
 	u32 i, w;
 	u8 pow[512], log[256];
@@ -144,15 +144,6 @@ void gen_tabs(void)
 		fl_tab[2][i] = upr(w, 2);
 		fl_tab[3][i] = upr(w, 3);
 		
-		/*
-		 * table for key schedule if fl_tab above is
-		 * not of the required form
-		 */
-		ls_tab[0][i] = w;
-		ls_tab[1][i] = upr(w, 1);
-		ls_tab[2][i] = upr(w, 2);
-		ls_tab[3][i] = upr(w, 3);
-		
 		b = fi(inv_affine((u8)i));
 		w = bytes2word(fe(b), f9(b), fd(b), fb(b));
 
@@ -387,19 +378,21 @@ void gen_tabs(void)
 	k[8*(i)+11] = ss[3];						\
 }
 
-static int
-aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
+static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
+		       unsigned int key_len)
 {
 	int i;
 	u32 ss[8];
-	struct aes_ctx *ctx = ctx_arg;
+	struct aes_ctx *ctx = crypto_tfm_ctx(tfm);
+	const __le32 *key = (const __le32 *)in_key;
+	u32 *flags = &tfm->crt_flags;
 
 	/* encryption schedule */
 	
-	ctx->ekey[0] = ss[0] = u32_in(in_key);
-	ctx->ekey[1] = ss[1] = u32_in(in_key + 4);
-	ctx->ekey[2] = ss[2] = u32_in(in_key + 8);
-	ctx->ekey[3] = ss[3] = u32_in(in_key + 12);
+	ctx->ekey[0] = ss[0] = le32_to_cpu(key[0]);
+	ctx->ekey[1] = ss[1] = le32_to_cpu(key[1]);
+	ctx->ekey[2] = ss[2] = le32_to_cpu(key[2]);
+	ctx->ekey[3] = ss[3] = le32_to_cpu(key[3]);
 
 	switch(key_len) {
 	case 16:
@@ -410,8 +403,8 @@ aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
 		break;
 		
 	case 24:
-		ctx->ekey[4] = ss[4] = u32_in(in_key + 16);
-		ctx->ekey[5] = ss[5] = u32_in(in_key + 20);
+		ctx->ekey[4] = ss[4] = le32_to_cpu(key[4]);
+		ctx->ekey[5] = ss[5] = le32_to_cpu(key[5]);
 		for (i = 0; i < 7; i++)
 			ke6(ctx->ekey, i);
 		kel6(ctx->ekey, 7); 
@@ -419,10 +412,10 @@ aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
 		break;
 
 	case 32:
-		ctx->ekey[4] = ss[4] = u32_in(in_key + 16);
-		ctx->ekey[5] = ss[5] = u32_in(in_key + 20);
-		ctx->ekey[6] = ss[6] = u32_in(in_key + 24);
-		ctx->ekey[7] = ss[7] = u32_in(in_key + 28);
+		ctx->ekey[4] = ss[4] = le32_to_cpu(key[4]);
+		ctx->ekey[5] = ss[5] = le32_to_cpu(key[5]);
+		ctx->ekey[6] = ss[6] = le32_to_cpu(key[6]);
+		ctx->ekey[7] = ss[7] = le32_to_cpu(key[7]);
 		for (i = 0; i < 6; i++)
 			ke8(ctx->ekey, i);
 		kel8(ctx->ekey, 6);
@@ -436,10 +429,10 @@ aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
 	
 	/* decryption schedule */
 	
-	ctx->dkey[0] = ss[0] = u32_in(in_key);
-	ctx->dkey[1] = ss[1] = u32_in(in_key + 4);
-	ctx->dkey[2] = ss[2] = u32_in(in_key + 8);
-	ctx->dkey[3] = ss[3] = u32_in(in_key + 12);
+	ctx->dkey[0] = ss[0] = le32_to_cpu(key[0]);
+	ctx->dkey[1] = ss[1] = le32_to_cpu(key[1]);
+	ctx->dkey[2] = ss[2] = le32_to_cpu(key[2]);
+	ctx->dkey[3] = ss[3] = le32_to_cpu(key[3]);
 
 	switch (key_len) {
 	case 16:
@@ -450,8 +443,8 @@ aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
 		break;
 		
 	case 24:
-		ctx->dkey[4] = ff(ss[4] = u32_in(in_key + 16));
-		ctx->dkey[5] = ff(ss[5] = u32_in(in_key + 20));
+		ctx->dkey[4] = ff(ss[4] = le32_to_cpu(key[4]));
+		ctx->dkey[5] = ff(ss[5] = le32_to_cpu(key[5]));
 		kdf6(ctx->dkey, 0);
 		for (i = 1; i < 7; i++)
 			kd6(ctx->dkey, i);
@@ -459,10 +452,10 @@ aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
 		break;
 
 	case 32:
-		ctx->dkey[4] = ff(ss[4] = u32_in(in_key + 16));
-		ctx->dkey[5] = ff(ss[5] = u32_in(in_key + 20));
-		ctx->dkey[6] = ff(ss[6] = u32_in(in_key + 24));
-		ctx->dkey[7] = ff(ss[7] = u32_in(in_key + 28));
+		ctx->dkey[4] = ff(ss[4] = le32_to_cpu(key[4]));
+		ctx->dkey[5] = ff(ss[5] = le32_to_cpu(key[5]));
+		ctx->dkey[6] = ff(ss[6] = le32_to_cpu(key[6]));
+		ctx->dkey[7] = ff(ss[7] = le32_to_cpu(key[7]));
 		kdf8(ctx->dkey, 0);
 		for (i = 1; i < 6; i++)
 			kd8(ctx->dkey, i);
@@ -472,18 +465,20 @@ aes_set_key(void *ctx_arg, const u8 *in_key, unsigned int key_len, u32 *flags)
 	return 0;
 }
 
-static inline void aes_encrypt(void *ctx, u8 *dst, const u8 *src)
+static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
 {
-	aes_enc_blk(src, dst, ctx);
+	aes_enc_blk(tfm, dst, src);
 }
-static inline void aes_decrypt(void *ctx, u8 *dst, const u8 *src)
+
+static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
 {
-	aes_dec_blk(src, dst, ctx);
+	aes_dec_blk(tfm, dst, src);
 }
 
-
 static struct crypto_alg aes_alg = {
 	.cra_name		=	"aes",
+	.cra_driver_name	=	"aes-i586",
+	.cra_priority		=	200,
 	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
 	.cra_blocksize		=	AES_BLOCK_SIZE,
 	.cra_ctxsize		=	sizeof(struct aes_ctx),