convert Byte Array to Secret Key
I've been trying to convert a byte array to its original SecretKey, but I've no more ideas left. The most promising attempt was this one:
byte[] encodedKey = Base64.decode(stringKey);
SecretKey originalKey = SecretKeySpec(encodedKey, 0, encodedKey.length, "AES")
found here: Converting Secret Key into a String and Vice Versa
I'm using the import javax.crypto.spec.SecretKeySpec, so the constructor for SecretKeySpec should be used correctly, at least referring to http://docs.oracle.com/javase/1.5.0/docs/api/javax/crypto/spec/SecretKeySpec.html.
Nonetheless I always get "The Method SecretKeySpec is undefined for ... [Class Name]" - which I just don't get.
I'm guessing it's just some minor mistake, but I just can't figure it out. Can someone please help me out here?
Answer
You need to use the new keyword to call the constructor and create the object.
SecretKey originalKey = new SecretKeySpec(encodedKey, 0, encodedKey.length, "AES");
When you try to call it without new, the compiler thinks it might be a method you've defined inside that class, hence your error message.