Encrypt a file in Scala/Java using AES 256

Question

I want to use symmetric encyption[AES -256] to encrypt and decrypt a [.dat] file using a secret key file provided to me from a team which they created using open ssl commands.

I am unable to find right examples to understand how to use the file already provided to me to encrypt and decrypt instead of generating a new key for the process in Scala.

Any help and guidance is appreciated.

Answer 1

You can use the Bouncy Castle library for that. Here'sa lightweight example listed on their website:

https://www.bouncycastle.org/specifications.html (section 5 & 5.1).

You can specify AES as encryption algorithm via the Engine (see section 5.2).