A suite designed to encrypt and decrypt files using openssl

1. The recipient generates a keypair

./generate_keys.sh

and sends the public key to his/her friends.

2. His/her friend encodes a file

./encrypt.sh public_key.pem classified_file

and sends the encoded file + the encoded key key.bin.enc to the recipient.

3. The recipient decodes the file

./decrypt.sh private_key.pem classified_file.aes

Just look at https://github.com/axettone/manuals/blob/master/cryptography/rsa/encrypt_a_file.md