sshenc.sh

bash script to encrypt data using a users ssh public key.

If you received a message from someone that was encrypted with this script, you can decrypt it with your ssh private key using the following command without installing anything:
bash <(curl -s https://sshenc.sh/sshenc.sh) -s ~/.ssh/id_rsa < file-containing-the-encrypted-text.txt

Install

Install locally

wget https://sshenc.sh/sshenc.sh

						chmod +x sshenc.sh

Run it from remote every time

If you are

really brave, and
want to be sure to run the latest version every time, or
maybe don't want/can't install files

you can use an alias that downloads and executes the script ecery time:
alias sshenc.sh='bash <(curl -s https://sshenc.sh/sshenc.sh)'

To add it to your environment permanently:
echo "alias sshenc.sh='bash <(curl -s https://sshenc.sh/sshenc.sh)'" >> ~/.bashrc

Examples

encrypt a file using your own ssh public key

sshenc.sh -p ~/.ssh/id_rsa.pub < plain-text-file.txt > encrypted.txt

encrypt a file using multiple recipients (broadcast encryption)

sshenc.sh -p ~/.ssh/id_rsa.pub -p id_rsa-alice.pub -p id_rsa-bob.pub < plain-text-file.txt > encrypted.txt

encrypt a file using the public key of a github user

sshenc.sh -p <(curl -sf "https://github.com/S2-.keys" | grep ssh-rsa | tail -n1) < plain-text-file.txt

this line fetches the first public key for the github user S2- and encrypts the file plain-text-file.txt using this key.

dedecrypt a file

sshenc.sh -s ~/.ssh/id_rsa < encrypted.txt

License

MIT