Hello
I would use RSA Algorithm for encryption and decryption.
I have all the necessary certification to do the job with ease.
As far as i understand, you need to encrypt and decrypt text files (.txt, .docx), we will need to use a 128 bit / 256 bit encryption algorithm.
Do you have any algorithm in mind? if not we will use RSA or DES whichever suits our needs.
I would be glad to work with you.
I am ready to start now. Thanks!