Question

I have a String (stringToEncrypt) , it is encrypted by AES-128 and got a byte[]. I try to write that byte[] to database as a String. An example below :

String encryptedString = new String(aes.encode(stringToEncrypt.getBytes()));

“encode” method gets a byte[] as parameter and returns a byte[]. “aes” object makes the AES-128 encoding process.
The problem is, when i try to write encryptedString to DB, some characters that are written to DB is not the same as “String encryptedString”. I think the problem is about the charset of DB or on my code. Any suggestions please?

Answer 1

String is the wrong data type for your problem. If you really need to encode raw bytes to a string, use base64.

If it is possible, try to store byte[] directly into the database.