X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=crypto%2Fcts.c;h=e467ec0acf9f091cc2865963b5370cd975791ed3;hb=57b60ee4abfa0836b2ce4a9e9085d4c675704751;hp=60b9da3fa7c1cd1fe4ec95c88fb1985c8ebea4e5;hpb=05b29f94a4ab4f37071025b0c235516c2616bce6;p=firefly-linux-kernel-4.4.55.git

diff --git a/crypto/cts.c b/crypto/cts.c
index 60b9da3fa7c1..e467ec0acf9f 100644
--- a/crypto/cts.c
+++ b/crypto/cts.c
@@ -202,7 +202,8 @@ static int cts_cbc_decrypt(struct crypto_cts_ctx *ctx,
 	/* 5. Append the tail (BB - Ln) bytes of Xn (tmp) to Cn to create En */
 	memcpy(s + bsize + lastn, tmp + lastn, bsize - lastn);
 	/* 6. Decrypt En to create Pn-1 */
-	memset(iv, 0, sizeof(iv));
+	memzero_explicit(iv, sizeof(iv));
+
 	sg_set_buf(&sgsrc[0], s + bsize, bsize);
 	sg_set_buf(&sgdst[0], d, bsize);
 	err = crypto_blkcipher_decrypt_iv(&lcldesc, sgdst, sgsrc, bsize);
@@ -289,6 +290,9 @@ static struct crypto_instance *crypto_cts_alloc(struct rtattr **tb)
 	if (!is_power_of_2(alg->cra_blocksize))
 		goto out_put_alg;
 
+	if (strncmp(alg->cra_name, "cbc(", 4))
+		goto out_put_alg;
+
 	inst = crypto_alloc_instance("cts", alg);
 	if (IS_ERR(inst))
 		goto out_put_alg;
@@ -306,8 +310,6 @@ static struct crypto_instance *crypto_cts_alloc(struct rtattr **tb)
 	inst->alg.cra_blkcipher.min_keysize = alg->cra_blkcipher.min_keysize;
 	inst->alg.cra_blkcipher.max_keysize = alg->cra_blkcipher.max_keysize;
 
-	inst->alg.cra_blkcipher.geniv = "seqiv";
-
 	inst->alg.cra_ctxsize = sizeof(struct crypto_cts_ctx);
 
 	inst->alg.cra_init = crypto_cts_init_tfm;