Okay, today let's see together why SSH & ED-25519 can simplify your life.
To authenticate to a service you can use a username and a password, but you can as well use a pair of keys: SSH keys.
It is really simple, you generate 2 keys. One public that you can share. One private that is a secret. You can generate different types of keys and you probably know the RSA type. Let's give it a shot:
Open a terminal and generate a key, with RSA type, a minimal recommended length of 2048 bits, and a Comment.
Read the next part before generating your keys...
ssh-keygen -t rsa -b 2048 -C "email@example.com"
You can decide the destination folder and if you want a passphrase. On a Unix system, it should be generated here:
Shorter, and more secure than RSA, Rivest–Shamir–Adleman? Impossible? Hold my beer, here comes ED-25519. Another type of keys but with a smaller public key! (And more secure, see links below.)
ssh-keygen -t ed25519 -C "firstname.lastname@example.org"
More infos here: https://docs.gitlab.com/ee/ssh/#generating-a-new-ssh-key-pair
Short example of public keys (The one you share and usually copy-paste):
# ED25519 🔑 ssh-ed25519 AAAAC3NzaC1lZNYMPE5AAAAILeqT4uN/abIL8P6+oAIZGGg BXT6o/pJRI1joLlLBCgl email@example.com # RSA 🗝 ssh-rsa AAAAB3Nwmnec2EAAAADAQABAAACAQDBZrkOYcnjvX/B3PvbgfNhvwgD mySNp/VyedwywZMukoL0n8sb7ts9Xn3uIDh7psJtjY0mwIpr4yBGUZpzMAk/F1 uExrYwo/T1MqFHJcbjn28CdpM8aMx6QPf7QetM4cJnqdwdüozn3kW2cWE3K +mJ7iTWTRqFLEaN9wzH9JUkKFffhH5xpGhEKvWQrJ1IXs0HkPfssAG+iSxEDsXwUh eBcTAC3obFS95tfhsxUSR40NiCUGjJwd/9b31iwUyVryQcnlXr1wAtGV2AvZYzTt v8nrqzrHVVYk+qTgdpWE+Jg8awdOswy23XV0Snx2+h8OWdDDM+RLeKmo+7ZACSWT8o tCynfIh/8ORHnYUONkym8Lqs5Lo/dRbXXFWK6hUNOc1PsvDy5P9jNfJs3oxKTpkM6 1Twrtx7uomFkddyvk73LqN58plOOqVVnc+vv+/qhv3CAom5l+5UrvMQsSPoEdT6fWUWXl/mAKJUzzrpBcYeUjyPOkb8uvo3MTZVB1ZsArkp7t/I Y6ekcur+7pHHSjhHj/s8fWy2twk0pET+3cmky8EbJEWH93OCmSXuDrFaGDkpny umLBn4oXqDACeÖePa9lgmJUpMmQli6 jaAqmzgBXfGsHKvmyiN69D+tiC64EH8Ty0sUkugbrRa2BAasdpJMRnYAi4m5F5Q Ya3bxhdKbmsAQ== firstname.lastname@example.org
Shorter & more secure, use ED-25519!
Eddy, 25 years old and he has five 19' years old brothers.
No more passwords to authenticate to Github (and every git-cloud) when you push your code. Go to your profile on the github website:
Personal Settings > SSH keys > New SSH keys.
Give a name to your key and copy-paste the content of your private
rsa ed25519 keys (in
From now on, when you will push something to Github, it will recognize who you are based on the keys you have in your
Same process with servers, instead of using a password to connect to them, add your SSH public key to the
authorized_keys file in
~/.ssh of the server.