gossl

GoSSL is an SSL/TLS certificate tool written with Go and built with ❤️

Features

Verify a server certificate with a root CA
Generate RSA private and public key
Generate x509 RSA root CA
Generate x509 RSA server certificate
Generate SSH key pair
Copy SSH public key to remote SSH server

Commands

help

help command displays default help and existing commands

./gossl help

verify

verify command verifies x509 certificate with provided root CA in PEM format.

./gossl verify --help
./gossl verify --cafile ./testdata/ca-cert.pem --certfile ./testdata/server-cert.pem
./gossl verify --dns 127.0.0.1 --cafile ./testdata/ca-cert.pem --certfile ./testdata/server-cert.pem

key

key command generates RSA private key with provided bit size.

./gossl key --help
./gossl key --bits 2048
./gossl key --bits 2048 --out private.key
./gossl key --bits 2048 --out private.key --withpub

cert

cert command generates x509 certificate with provided private key.

./gossl cert --help

// Generate Root CA

./gossl cert \
    --key private.key \
    --out ca.pem \
    --days 365 \
    --serial 12345 \
    --isCA

// Generate Certificate

./gossl cert \
    --key private.key \
    --out cert.pem \
    --days 365 \
    --serial 12345

ssh

ssh command generates SSH Key Pair with provided bit size just like ssh-keygen tool.

./gossl key --help
./gossl key --bits 2048
./gossl key --bits 2048 -out ./id_rsa
// output will be written to ./id_rsa and ./id_rsa_pub files

ssh-copy

ssh-copy connects remote SSH server and appends provided public key (eg, id_rsa.pub) to authorized_keys file just like ssh-copy-id tool.

./gossl ssh-copy --help
./gossl ssh-copy --pubkey /home/user/.ssh/id_rsa.pub remoteUser@remoteIP
// This command will ask for password to connect SSH server

TODO

Add generate command for generating private key, root ca and x509 certificates in one command
Add cert template format read from yaml file
Add verification of a CA and http endpoint
Add test for utils package
Add test for help package
Add test for ssh-copy

hionay / gossl