Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

[linux-2.6-block.git] / include / linux / crypto.h

diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 9c8776d0ada87bcf9fa70bc401ce69e336b93d74..fb5ef16d6a122ad7f3f038d22c3160044581921d 100644 (file)
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -1147,7 +1147,7 @@ static inline void ablkcipher_request_free(struct ablkcipher_request *req)
  * cipher operation completes.
  *
  * The callback function is registered with the ablkcipher_request handle and
- * must comply with the following template:
+ * must comply with the following template
  *
  *     void callback_function(struct crypto_async_request *req, int error)
  */
@@ -1174,7 +1174,7 @@ static inline void ablkcipher_request_set_callback(
  *
  * For encryption, the source is treated as the plaintext and the
  * destination is the ciphertext. For a decryption operation, the use is
- * reversed: the source is the ciphertext and the destination is the plaintext.
+ * reversed - the source is the ciphertext and the destination is the plaintext.
  */
 static inline void ablkcipher_request_set_crypt(
        struct ablkcipher_request *req,
@@ -1412,6 +1412,9 @@ static inline int crypto_aead_encrypt(struct aead_request *req)
  */
 static inline int crypto_aead_decrypt(struct aead_request *req)
 {
+       if (req->cryptlen < crypto_aead_authsize(crypto_aead_reqtfm(req)))
+               return -EINVAL;
+
        return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
 }
 
@@ -1506,7 +1509,7 @@ static inline void aead_request_free(struct aead_request *req)
  * completes
  *
  * The callback function is registered with the aead_request handle and
- * must comply with the following template:
+ * must comply with the following template
  *
  *     void callback_function(struct crypto_async_request *req, int error)
  */
@@ -1533,7 +1536,7 @@ static inline void aead_request_set_callback(struct aead_request *req,
  *
  * For encryption, the source is treated as the plaintext and the
  * destination is the ciphertext. For a decryption operation, the use is
- * reversed: the source is the ciphertext and the destination is the plaintext.
+ * reversed - the source is the ciphertext and the destination is the plaintext.
  *
  * IMPORTANT NOTE AEAD requires an authentication tag (MAC). For decryption,
  *               the caller must concatenate the ciphertext followed by the