X-Git-Url: http://ftp.safe.ca/?p=safe%2Fjmp%2Flinux-2.6;a=blobdiff_plain;f=crypto%2Fserpent.c;h=b651a55fa569f9c913076b1b18647f5e31efd97a;hp=7d152e89016fa8f142c44e015298ea20c1b6c612;hb=f653398c86a1c104f0992bd788dd4bb065449be4;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

diff --git a/crypto/serpent.c b/crypto/serpent.c
index 7d152e8..b651a55 100644
--- a/crypto/serpent.c
+++ b/crypto/serpent.c
@@ -20,6 +20,7 @@
 #include <linux/errno.h>
 #include <asm/byteorder.h>
 #include <linux/crypto.h>
+#include <linux/types.h>
 
 /* Key is padded to the maximum of 256 bits before round key generation.
  * Any key length <= 256 bits (32 bytes) is allowed by the algorithm.
@@ -210,25 +211,19 @@
 	x4 ^= x2;
 
 struct serpent_ctx {
-	u8 iv[SERPENT_BLOCK_SIZE];
 	u32 expkey[SERPENT_EXPKEY_WORDS];
 };
 
 
-static int serpent_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags)
+static int serpent_setkey(struct crypto_tfm *tfm, const u8 *key,
+			  unsigned int keylen)
 {
-	u32 *k = ((struct serpent_ctx *)ctx)->expkey;
+	struct serpent_ctx *ctx = crypto_tfm_ctx(tfm);
+	u32 *k = ctx->expkey;
 	u8  *k8 = (u8 *)k;
 	u32 r0,r1,r2,r3,r4;
 	int i;
 
-	if ((keylen < SERPENT_MIN_KEY_SIZE)
-			|| (keylen > SERPENT_MAX_KEY_SIZE))
-	{
-		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
-		return -EINVAL;
-	}
-
 	/* Copy key, add padding */
 
 	for (i = 0; i < keylen; ++i)
@@ -365,13 +360,14 @@ static int serpent_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *fl
 	return 0;
 }
 
-static void serpent_encrypt(void *ctx, u8 *dst, const u8 *src)
+static void serpent_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
 {
+	struct serpent_ctx *ctx = crypto_tfm_ctx(tfm);
 	const u32
-		*k = ((struct serpent_ctx *)ctx)->expkey,
-		*s = (const u32 *)src;
-	u32	*d = (u32 *)dst,
-		r0, r1, r2, r3, r4;
+		*k = ctx->expkey;
+	const __le32 *s = (const __le32 *)src;
+	__le32	*d = (__le32 *)dst;
+	u32	r0, r1, r2, r3, r4;
 
 /*
  * Note: The conversions between u8* and u32* might cause trouble
@@ -423,13 +419,14 @@ static void serpent_encrypt(void *ctx, u8 *dst, const u8 *src)
 	d[3] = cpu_to_le32(r3);
 }
 
-static void serpent_decrypt(void *ctx, u8 *dst, const u8 *src)
+static void serpent_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
 {
+	struct serpent_ctx *ctx = crypto_tfm_ctx(tfm);
 	const u32
-		*k = ((struct serpent_ctx *)ctx)->expkey,
-		*s = (const u32 *)src;
-	u32	*d = (u32 *)dst,
-		r0, r1, r2, r3, r4;
+		*k = ((struct serpent_ctx *)ctx)->expkey;
+	const __le32 *s = (const __le32 *)src;
+	__le32	*d = (__le32 *)dst;
+	u32	r0, r1, r2, r3, r4;
 
 	r0 = le32_to_cpu(s[0]);
 	r1 = le32_to_cpu(s[1]);
@@ -481,6 +478,7 @@ static struct crypto_alg serpent_alg = {
 	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
 	.cra_blocksize		=	SERPENT_BLOCK_SIZE,
 	.cra_ctxsize		=	sizeof(struct serpent_ctx),
+	.cra_alignmask		=	3,
 	.cra_module		=	THIS_MODULE,
 	.cra_list		=	LIST_HEAD_INIT(serpent_alg.cra_list),
 	.cra_u			=	{ .cipher = {
@@ -491,24 +489,19 @@ static struct crypto_alg serpent_alg = {
 	.cia_decrypt  		=	serpent_decrypt } }
 };
 
-static int tnepres_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags)
+static int tnepres_setkey(struct crypto_tfm *tfm, const u8 *key,
+			  unsigned int keylen)
 {
 	u8 rev_key[SERPENT_MAX_KEY_SIZE];
 	int i;
 
-	if ((keylen < SERPENT_MIN_KEY_SIZE)
-	    || (keylen > SERPENT_MAX_KEY_SIZE)) {
-		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
-		return -EINVAL;
-	} 
-
 	for (i = 0; i < keylen; ++i)
 		rev_key[keylen - i - 1] = key[i];
  
-	return serpent_setkey(ctx, rev_key, keylen, flags);
+	return serpent_setkey(tfm, rev_key, keylen);
 }
 
-static void tnepres_encrypt(void *ctx, u8 *dst, const u8 *src)
+static void tnepres_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
 {
 	const u32 * const s = (const u32 * const)src;
 	u32 * const d = (u32 * const)dst;
@@ -520,7 +513,7 @@ static void tnepres_encrypt(void *ctx, u8 *dst, const u8 *src)
 	rs[2] = swab32(s[1]);
 	rs[3] = swab32(s[0]);
 
-	serpent_encrypt(ctx, (u8 *)rd, (u8 *)rs);
+	serpent_encrypt(tfm, (u8 *)rd, (u8 *)rs);
 
 	d[0] = swab32(rd[3]);
 	d[1] = swab32(rd[2]);
@@ -528,7 +521,7 @@ static void tnepres_encrypt(void *ctx, u8 *dst, const u8 *src)
 	d[3] = swab32(rd[0]);
 }
 
-static void tnepres_decrypt(void *ctx, u8 *dst, const u8 *src)
+static void tnepres_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
 {
 	const u32 * const s = (const u32 * const)src;
 	u32 * const d = (u32 * const)dst;
@@ -540,7 +533,7 @@ static void tnepres_decrypt(void *ctx, u8 *dst, const u8 *src)
 	rs[2] = swab32(s[1]);
 	rs[3] = swab32(s[0]);
 
-	serpent_decrypt(ctx, (u8 *)rd, (u8 *)rs);
+	serpent_decrypt(tfm, (u8 *)rd, (u8 *)rs);
 
 	d[0] = swab32(rd[3]);
 	d[1] = swab32(rd[2]);
@@ -553,6 +546,7 @@ static struct crypto_alg tnepres_alg = {
 	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
 	.cra_blocksize		=	SERPENT_BLOCK_SIZE,
 	.cra_ctxsize		=	sizeof(struct serpent_ctx),
+	.cra_alignmask		=	3,
 	.cra_module		=	THIS_MODULE,
 	.cra_list		=	LIST_HEAD_INIT(serpent_alg.cra_list),
 	.cra_u			=	{ .cipher = {
@@ -563,7 +557,7 @@ static struct crypto_alg tnepres_alg = {
 	.cia_decrypt  		=	tnepres_decrypt } }
 };
 
-static int __init init(void)
+static int __init serpent_mod_init(void)
 {
 	int ret = crypto_register_alg(&serpent_alg);
 
@@ -578,14 +572,14 @@ static int __init init(void)
 	return ret;
 }
 
-static void __exit fini(void)
+static void __exit serpent_mod_fini(void)
 {
 	crypto_unregister_alg(&tnepres_alg);
 	crypto_unregister_alg(&serpent_alg);
 }
 
-module_init(init);
-module_exit(fini);
+module_init(serpent_mod_init);
+module_exit(serpent_mod_fini);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Serpent and tnepres (kerneli compatible serpent reversed) Cipher Algorithm");