1 files changed, 19 insertions, 13 deletions

diff --git a/drivers/net/ppp_mppe.c b/drivers/net/ppp_mppe.c
index 51ff9a9d1bb5fb..495d8667419a9c 100644
--- a/drivers/net/ppp_mppe.c
+++ b/drivers/net/ppp_mppe.c
@@ -43,6 +43,7 @@
  *                    deprecated in 2.6
  */
 
+#include <linux/err.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/version.h>
@@ -95,7 +96,7 @@ static inline void sha_pad_init(struct sha_pad *shapad)
  * State for an MPPE (de)compressor.
  */
 struct ppp_mppe_state {
-	struct crypto_tfm *arc4;
+	struct crypto_blkcipher *arc4;
 	struct crypto_tfm *sha1;
 	unsigned char *sha1_digest;
 	unsigned char master_key[MPPE_MAX_KEY_LEN];
@@ -156,14 +157,15 @@ static void mppe_rekey(struct ppp_mppe_state * state, int initial_key)
 {
 	unsigned char InterimKey[MPPE_MAX_KEY_LEN];
 	struct scatterlist sg_in[1], sg_out[1];
+	struct blkcipher_desc desc = { .tfm = state->arc4 };
 
 	get_new_key_from_sha(state, InterimKey);
 	if (!initial_key) {
-		crypto_cipher_setkey(state->arc4, InterimKey, state->keylen);
+		crypto_blkcipher_setkey(state->arc4, InterimKey, state->keylen);
 		setup_sg(sg_in, InterimKey, state->keylen);
 		setup_sg(sg_out, state->session_key, state->keylen);
-		if (crypto_cipher_encrypt(state->arc4, sg_out, sg_in,
-				      state->keylen) != 0) {
+		if (crypto_blkcipher_encrypt(&desc, sg_out, sg_in,
+					     state->keylen) != 0) {
     		    printk(KERN_WARNING "mppe_rekey: cipher_encrypt failed\n");
 		}
 	} else {
@@ -175,7 +177,7 @@ static void mppe_rekey(struct ppp_mppe_state * state, int initial_key)
 		state->session_key[1] = 0x26;
 		state->session_key[2] = 0x9e;
 	}
-	crypto_cipher_setkey(state->arc4, state->session_key, state->keylen);
+	crypto_blkcipher_setkey(state->arc4, state->session_key, state->keylen);
 }
 
 /*
@@ -196,9 +198,11 @@ static void *mppe_alloc(unsigned char *options, int optlen)
 
 	memset(state, 0, sizeof(*state));
 
-	state->arc4 = crypto_alloc_tfm("arc4", 0);
-	if (!state->arc4)
+	state->arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(state->arc4)) {
+		state->arc4 = NULL;
 		goto out_free;
+	}
 
 	state->sha1 = crypto_alloc_tfm("sha1", 0);
 	if (!state->sha1)
@@ -231,7 +235,7 @@ static void *mppe_alloc(unsigned char *options, int optlen)
 	    if (state->sha1)
 		crypto_free_tfm(state->sha1);
 	    if (state->arc4)
-		crypto_free_tfm(state->arc4);
+		crypto_free_blkcipher(state->arc4);
 	    kfree(state);
 	out:
 	return NULL;
@@ -249,7 +253,7 @@ static void mppe_free(void *arg)
 	    if (state->sha1)
 		crypto_free_tfm(state->sha1);
 	    if (state->arc4)
-		crypto_free_tfm(state->arc4);
+		crypto_free_blkcipher(state->arc4);
 	    kfree(state);
 	}
 }
@@ -356,6 +360,7 @@ mppe_compress(void *arg, unsigned char *ibuf, unsigned char *obuf,
 	      int isize, int osize)
 {
 	struct ppp_mppe_state *state = (struct ppp_mppe_state *) arg;
+	struct blkcipher_desc desc = { .tfm = state->arc4 };
 	int proto;
 	struct scatterlist sg_in[1], sg_out[1];
 
@@ -413,7 +418,7 @@ mppe_compress(void *arg, unsigned char *ibuf, unsigned char *obuf,
 	/* Encrypt packet */
 	setup_sg(sg_in, ibuf, isize);
 	setup_sg(sg_out, obuf, osize);
-	if (crypto_cipher_encrypt(state->arc4, sg_out, sg_in, isize) != 0) {
+	if (crypto_blkcipher_encrypt(&desc, sg_out, sg_in, isize) != 0) {
 		printk(KERN_DEBUG "crypto_cypher_encrypt failed\n");
 		return -1;
 	}
@@ -462,6 +467,7 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf,
 		int osize)
 {
 	struct ppp_mppe_state *state = (struct ppp_mppe_state *) arg;
+	struct blkcipher_desc desc = { .tfm = state->arc4 };
 	unsigned ccount;
 	int flushed = MPPE_BITS(ibuf) & MPPE_BIT_FLUSHED;
 	int sanity = 0;
@@ -599,7 +605,7 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf,
 	 */
 	setup_sg(sg_in, ibuf, 1);
 	setup_sg(sg_out, obuf, 1);
-	if (crypto_cipher_decrypt(state->arc4, sg_out, sg_in, 1) != 0) {
+	if (crypto_blkcipher_decrypt(&desc, sg_out, sg_in, 1) != 0) {
 		printk(KERN_DEBUG "crypto_cypher_decrypt failed\n");
 		return DECOMP_ERROR;
 	}
@@ -619,7 +625,7 @@ mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf,
 	/* And finally, decrypt the rest of the packet. */
 	setup_sg(sg_in, ibuf + 1, isize - 1);
 	setup_sg(sg_out, obuf + 1, osize - 1);
-	if (crypto_cipher_decrypt(state->arc4, sg_out, sg_in, isize - 1) != 0) {
+	if (crypto_blkcipher_decrypt(&desc, sg_out, sg_in, isize - 1)) {
 		printk(KERN_DEBUG "crypto_cypher_decrypt failed\n");
 		return DECOMP_ERROR;
 	}
@@ -694,7 +700,7 @@ static struct compressor ppp_mppe = {
 static int __init ppp_mppe_init(void)
 {
 	int answer;
-	if (!(crypto_alg_available("arc4", 0) &&
+	if (!(crypto_alg_available("ecb(arc4)", 0) &&
 	      crypto_alg_available("sha1", 0)))
 		return -ENODEV;