sm4: fixed build errors

Author: zonyitoo

sm4/src/soft.rs

@@ -4,7 +4,7 @@ use cipher::{
     consts::U16, inout::InOut, AlgorithmName, Block, BlockCipher, BlockSizeUser, Key, KeyInit,
     KeySizeUser,
 };
-use core::fmt;
+use core::{convert::TryInto, fmt};
 
 use crate::consts::{CK, FK, SBOX};
 

sm4/tests/mod.rs

@@ -83,8 +83,8 @@ fn sm4_example_1_blocks() {
     let mut blocks = plaintext;
     cipher.encrypt_blocks(&mut blocks);
 
-    assert_eq!(&ciphertext, blocks.as_slice());
+    assert_eq!(&ciphertext, &blocks);
 
     cipher.decrypt_blocks(&mut blocks);
-    assert_eq!(&plaintext, blocks.as_slice());
+    assert_eq!(&plaintext, &blocks);
 }