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.

Just to make sure I understand correctly ? you want to do that programatically, or using `openssl` in the shell ? With `openssl` is simple, it's just one command for encryption/decryption. Programatically, you might find your answer here: https://stackoverflow.com/a/51329687/2205089 — Alin Gabriel Arhip, Jul 01 '22 at 22:31

score -1 · Answer 1 · answered Jul 01 '22 at 18:56

-1

You can use the Bouncy Castle library for that. Here‘s a 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).

answered Jul 01 '22 at 18:56

Daniel

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There is no need to use bounycastle, Java already has everything you need. – President James K. Polk Jul 01 '22 at 21:39
@President James K. Polk can you help me with a sample code in Java on how i can read the the key file and use it for encryption – Roxane Felton Jul 02 '22 at 05:23

Encrypt a file in Scala/Java using AES 256

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