Android uses AES to encrypt and decrypt file instance code

preface

Recently, the company needs to encrypt and decrypt some downloaded files of the company. In fact, it needs to use the third-party jar package: bcprov-jdk15on-155.jar. You can search online or download your demo. Note: you can decrypt only if the encryption and decryption keys are the same, otherwise the decryption will fail. Not much, just the code.

design sketch

code:

Implement encryption and decryption logic code

Generate secret key code

Encryption logic example code

Decryption logic example code:

Summary:

Note that the secret keys need to be consistent.

The above is the whole content of this article. I hope it will be helpful to your study, and I hope you can support programming tips.