review updates

Author: dev-koan

src/main/java/com/ibm/crypto/plus/provider/MessageDigest.java

@@ -66,7 +66,7 @@ protected int engineGetDigestLength() {
     }
 
     /*
-     * This method helps in deriving PKCS12 key by perfroming update and digest in C
+     * This method helps in deriving PKCS12 key by performing update and digest in C
      * in an iteration count loop avoiding excess JNI calls. 
      */
     protected byte[] PKCS12KeyDeriveHelp(byte[] input, int offset, int length, int iterationCount) {

src/main/java/com/ibm/crypto/plus/provider/PBES1Core.java

@@ -220,6 +220,7 @@ protected void engineInit(int opmode, Key key,
         }
 
         byte[] pass = passwordBigEndian(password);
+        Arrays.fill(password, (byte) 0x00);
         byte[] iv = deriveKey(8, CIPHER_IV, pass);
         byte[] derivedKey = deriveKey(keysize, CIPHER_KEY, pass);
         Arrays.fill(pass, (byte) 0x00);