X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=crypto%2Fauthenc.c;h=2e16ce0089cb1f3af32f7ac74ac2d6592230af1f;hb=ac95301f271f32901e4007096aa3516def49eed2;hp=40b6e9ec9e3a0a2069b5f972226918dc33625294;hpb=5f7082ed4f482f05db01d84dbf58190492ebf0ad;p=safe%2Fjmp%2Flinux-2.6

diff --git a/crypto/authenc.c b/crypto/authenc.c
index 40b6e9e..2e16ce0 100644
--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -158,16 +158,19 @@ static int crypto_authenc_genicv(struct aead_request *req, u8 *iv,
 	dstp = sg_page(dst);
 	vdst = PageHighMem(dstp) ? NULL : page_address(dstp) + dst->offset;
 
-	sg_init_table(cipher, 2);
-	sg_set_buf(cipher, iv, ivsize);
-	authenc_chain(cipher, dst, vdst == iv + ivsize);
+	if (ivsize) {
+		sg_init_table(cipher, 2);
+		sg_set_buf(cipher, iv, ivsize);
+		authenc_chain(cipher, dst, vdst == iv + ivsize);
+		dst = cipher;
+	}
 
 	cryptlen = req->cryptlen + ivsize;
-	hash = crypto_authenc_hash(req, flags, cipher, cryptlen);
+	hash = crypto_authenc_hash(req, flags, dst, cryptlen);
 	if (IS_ERR(hash))
 		return PTR_ERR(hash);
 
-	scatterwalk_map_and_copy(hash, cipher, cryptlen,
+	scatterwalk_map_and_copy(hash, dst, cryptlen,
 				 crypto_aead_authsize(authenc), 1);
 	return 0;
 }
@@ -285,11 +288,14 @@ static int crypto_authenc_iverify(struct aead_request *req, u8 *iv,
 	srcp = sg_page(src);
 	vsrc = PageHighMem(srcp) ? NULL : page_address(srcp) + src->offset;
 
-	sg_init_table(cipher, 2);
-	sg_set_buf(cipher, iv, ivsize);
-	authenc_chain(cipher, src, vsrc == iv + ivsize);
+	if (ivsize) {
+		sg_init_table(cipher, 2);
+		sg_set_buf(cipher, iv, ivsize);
+		authenc_chain(cipher, src, vsrc == iv + ivsize);
+		src = cipher;
+	}
 
-	return crypto_authenc_verify(req, cipher, cryptlen + ivsize);
+	return crypto_authenc_verify(req, src, cryptlen + ivsize);
 }
 
 static int crypto_authenc_decrypt(struct aead_request *req)
@@ -430,11 +436,7 @@ static struct crypto_instance *crypto_authenc_alloc(struct rtattr **tb)
 	inst->alg.cra_type = &crypto_aead_type;
 
 	inst->alg.cra_aead.ivsize = enc->cra_ablkcipher.ivsize;
-	inst->alg.cra_aead.maxauthsize = auth->cra_type == &crypto_hash_type ?
-					 auth->cra_hash.digestsize :
-					 auth->cra_type ?
-					 __crypto_shash_alg(auth)->digestsize :
-					 auth->cra_digest.dia_digestsize;
+	inst->alg.cra_aead.maxauthsize = __crypto_shash_alg(auth)->digestsize;
 
 	inst->alg.cra_ctxsize = sizeof(struct crypto_authenc_ctx);