X-Git-Url: http://ftp.safe.ca/?p=safe%2Fjmp%2Flinux-2.6;a=blobdiff_plain;f=crypto%2Fmichael_mic.c;h=079b761bc70d125b241da7d13d30d7cef8b43846;hp=701f859ed7674618da0c6969256df2f4f52fa544;hb=b2e75eff5e859d0c294e7405958362b26a423c6e;hpb=e1147d8f47eb8fef93f98a30858192145137d2b2

diff --git a/crypto/michael_mic.c b/crypto/michael_mic.c
index 701f859..079b761 100644
--- a/crypto/michael_mic.c
+++ b/crypto/michael_mic.c
@@ -3,29 +3,31 @@
  *
  * Michael MIC (IEEE 802.11i/TKIP) keyed digest
  *
- * Copyright (c) 2004 Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright (c) 2004 Jouni Malinen <j@w1.fi>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-
+#include <crypto/internal/hash.h>
 #include <asm/byteorder.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/string.h>
-#include <linux/crypto.h>
 #include <linux/types.h>
 
 
 struct michael_mic_ctx {
+	u32 l, r;
+};
+
+struct michael_mic_desc_ctx {
 	u8 pending[4];
 	size_t pending_len;
 
 	u32 l, r;
 };
 
-
 static inline u32 xswap(u32 val)
 {
 	return ((val & 0x00ff00ff) << 8) | ((val & 0xff00ff00) >> 8);
@@ -45,16 +47,22 @@ do {				\
 } while (0)
 
 
-static void michael_init(void *ctx)
+static int michael_init(struct shash_desc *desc)
 {
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_desc_ctx *mctx = shash_desc_ctx(desc);
+	struct michael_mic_ctx *ctx = crypto_shash_ctx(desc->tfm);
 	mctx->pending_len = 0;
+	mctx->l = ctx->l;
+	mctx->r = ctx->r;
+
+	return 0;
 }
 
 
-static void michael_update(void *ctx, const u8 *data, unsigned int len)
+static int michael_update(struct shash_desc *desc, const u8 *data,
+			   unsigned int len)
 {
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_desc_ctx *mctx = shash_desc_ctx(desc);
 	const __le32 *src;
 
 	if (mctx->pending_len) {
@@ -67,7 +75,7 @@ static void michael_update(void *ctx, const u8 *data, unsigned int len)
 		len -= flen;
 
 		if (mctx->pending_len < 4)
-			return;
+			return 0;
 
 		src = (const __le32 *)mctx->pending;
 		mctx->l ^= le32_to_cpup(src);
@@ -87,12 +95,14 @@ static void michael_update(void *ctx, const u8 *data, unsigned int len)
 		mctx->pending_len = len;
 		memcpy(mctx->pending, src, len);
 	}
+
+	return 0;
 }
 
 
-static void michael_final(void *ctx, u8 *out)
+static int michael_final(struct shash_desc *desc, u8 *out)
 {
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_desc_ctx *mctx = shash_desc_ctx(desc);
 	u8 *data = mctx->pending;
 	__le32 *dst = (__le32 *)out;
 
@@ -118,18 +128,20 @@ static void michael_final(void *ctx, u8 *out)
 
 	dst[0] = cpu_to_le32(mctx->l);
 	dst[1] = cpu_to_le32(mctx->r);
+
+	return 0;
 }
 
 
-static int michael_setkey(void *ctx, const u8 *key, unsigned int keylen,
-			  u32 *flags)
+static int michael_setkey(struct crypto_shash *tfm, const u8 *key,
+			  unsigned int keylen)
 {
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_ctx *mctx = crypto_shash_ctx(tfm);
+
 	const __le32 *data = (const __le32 *)key;
 
 	if (keylen != 8) {
-		if (flags)
-			*flags = CRYPTO_TFM_RES_BAD_KEY_LEN;
+		crypto_shash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
 		return -EINVAL;
 	}
 
@@ -138,33 +150,31 @@ static int michael_setkey(void *ctx, const u8 *key, unsigned int keylen,
 	return 0;
 }
 
-
-static struct crypto_alg michael_mic_alg = {
-	.cra_name	= "michael_mic",
-	.cra_flags	= CRYPTO_ALG_TYPE_DIGEST,
-	.cra_blocksize	= 8,
-	.cra_ctxsize	= sizeof(struct michael_mic_ctx),
-	.cra_module	= THIS_MODULE,
-	.cra_alignmask	= 3,
-	.cra_list	= LIST_HEAD_INIT(michael_mic_alg.cra_list),
-	.cra_u		= { .digest = {
-	.dia_digestsize	= 8,
-	.dia_init	= michael_init,
-	.dia_update	= michael_update,
-	.dia_final	= michael_final,
-	.dia_setkey	= michael_setkey } }
+static struct shash_alg alg = {
+	.digestsize		=	8,
+	.setkey			=	michael_setkey,
+	.init			=	michael_init,
+	.update			=	michael_update,
+	.final			=	michael_final,
+	.descsize		=	sizeof(struct michael_mic_desc_ctx),
+	.base			=	{
+		.cra_name		=	"michael_mic",
+		.cra_blocksize		=	8,
+		.cra_alignmask		=	3,
+		.cra_ctxsize		=	sizeof(struct michael_mic_ctx),
+		.cra_module		=	THIS_MODULE,
+	}
 };
 
-
 static int __init michael_mic_init(void)
 {
-	return crypto_register_alg(&michael_mic_alg);
+	return crypto_register_shash(&alg);
 }
 
 
 static void __exit michael_mic_exit(void)
 {
-	crypto_unregister_alg(&michael_mic_alg);
+	crypto_unregister_shash(&alg);
 }
 
 
@@ -173,4 +183,4 @@ module_exit(michael_mic_exit);
 
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("Michael MIC");
-MODULE_AUTHOR("Jouni Malinen <jkmaline@cc.hut.fi>");
+MODULE_AUTHOR("Jouni Malinen <j@w1.fi>");