X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=crypto%2Fmichael_mic.c;h=094397b4884968b5e90ee4d8f99fe16395aae178;hb=aee6452dfcdb1e2a3fb3f3d434635ddca8fad516;hp=08a8dbb3feb6afd1c434793d489d7265c9f683fd;hpb=daddc0d38b3571bed170afa273a49a0eba090c1e;p=linux-2.6.git

diff --git a/crypto/michael_mic.c b/crypto/michael_mic.c
index 08a8dbb3f..094397b48 100644
--- a/crypto/michael_mic.c
+++ b/crypto/michael_mic.c
@@ -10,10 +10,12 @@
  * published by the Free Software Foundation.
  */
 
+#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 {
@@ -24,18 +26,6 @@ struct michael_mic_ctx {
 };
 
 
-static inline u32 rotl(u32 val, int bits)
-{
-	return (val << bits) | (val >> (32 - bits));
-}
-
-
-static inline u32 rotr(u32 val, int bits)
-{
-	return (val >> bits) | (val << (32 - bits));
-}
-
-
 static inline u32 xswap(u32 val)
 {
 	return ((val & 0x00ff00ff) << 8) | ((val & 0xff00ff00) >> 8);
@@ -44,42 +34,29 @@ static inline u32 xswap(u32 val)
 
 #define michael_block(l, r)	\
 do {				\
-	r ^= rotl(l, 17);	\
+	r ^= rol32(l, 17);	\
 	l += r;			\
 	r ^= xswap(l);		\
 	l += r;			\
-	r ^= rotl(l, 3);	\
+	r ^= rol32(l, 3);	\
 	l += r;			\
-	r ^= rotr(l, 2);	\
+	r ^= ror32(l, 2);	\
 	l += r;			\
 } while (0)
 
 
-static inline u32 get_le32(const u8 *p)
+static void michael_init(struct crypto_tfm *tfm)
 {
-	return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
-}
-
-
-static inline void put_le32(u8 *p, u32 v)
-{
-	p[0] = v;
-	p[1] = v >> 8;
-	p[2] = v >> 16;
-	p[3] = v >> 24;
-}
-
-
-static void michael_init(void *ctx)
-{
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_ctx *mctx = crypto_tfm_ctx(tfm);
 	mctx->pending_len = 0;
 }
 
 
-static void michael_update(void *ctx, const u8 *data, unsigned int len)
+static void michael_update(struct crypto_tfm *tfm, const u8 *data,
+			   unsigned int len)
 {
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_ctx *mctx = crypto_tfm_ctx(tfm);
+	const __le32 *src;
 
 	if (mctx->pending_len) {
 		int flen = 4 - mctx->pending_len;
@@ -93,29 +70,32 @@ static void michael_update(void *ctx, const u8 *data, unsigned int len)
 		if (mctx->pending_len < 4)
 			return;
 
-		mctx->l ^= get_le32(mctx->pending);
+		src = (const __le32 *)mctx->pending;
+		mctx->l ^= le32_to_cpup(src);
 		michael_block(mctx->l, mctx->r);
 		mctx->pending_len = 0;
 	}
 
+	src = (const __le32 *)data;
+
 	while (len >= 4) {
-		mctx->l ^= get_le32(data);
+		mctx->l ^= le32_to_cpup(src++);
 		michael_block(mctx->l, mctx->r);
-		data += 4;
 		len -= 4;
 	}
 
 	if (len > 0) {
 		mctx->pending_len = len;
-		memcpy(mctx->pending, data, len);
+		memcpy(mctx->pending, src, len);
 	}
 }
 
 
-static void michael_final(void *ctx, u8 *out)
+static void michael_final(struct crypto_tfm *tfm, u8 *out)
 {
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_ctx *mctx = crypto_tfm_ctx(tfm);
 	u8 *data = mctx->pending;
+	__le32 *dst = (__le32 *)out;
 
 	/* Last block and padding (0x5a, 4..7 x 0) */
 	switch (mctx->pending_len) {
@@ -137,22 +117,24 @@ static void michael_final(void *ctx, u8 *out)
 	/* l ^= 0; */
 	michael_block(mctx->l, mctx->r);
 
-	put_le32(out, mctx->l);
-	put_le32(out + 4, mctx->r);
+	dst[0] = cpu_to_le32(mctx->l);
+	dst[1] = cpu_to_le32(mctx->r);
 }
 
 
-static int michael_setkey(void *ctx, const u8 *key, unsigned int keylen,
-			  u32 *flags)
+static int michael_setkey(struct crypto_tfm *tfm, const u8 *key,
+			  unsigned int keylen)
 {
-	struct michael_mic_ctx *mctx = ctx;
+	struct michael_mic_ctx *mctx = crypto_tfm_ctx(tfm);
+	const __le32 *data = (const __le32 *)key;
+
 	if (keylen != 8) {
-		if (flags)
-			*flags = CRYPTO_TFM_RES_BAD_KEY_LEN;
+		tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
 		return -EINVAL;
 	}
-	mctx->l = get_le32(key);
-	mctx->r = get_le32(key + 4);
+
+	mctx->l = le32_to_cpu(data[0]);
+	mctx->r = le32_to_cpu(data[1]);
 	return 0;
 }
 
@@ -163,6 +145,7 @@ static struct crypto_alg michael_mic_alg = {
 	.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,