Private key

OpenSSH

Generate OpenSSH private and public key

• ssh-keygen

Generate public key based on private key in OpenSSH format

• ssh-keygen -y -f ~/.ssh/id_rsa > ~/.ssh/id_rsa.pub

Change the passphrase of a private key

• ssh-keygen -p

Convert or import key:

• ssh-keygen -i

Connnect with specific private key:

• ssh -i

OpenSSL

OpenSSL:

• openssl genrsa

Cyrpto

Ethereum:

• geth account new: ~/Library/Ethereum/keystore/, UTC--2022-08-20T09-04-05.508818000Z--3f1f9b59574d7d19562xxxxx
• ethkey generate: keyfile.json

• BIP39: Mnemonic code for generating deterministic keys

Related terms

• Public key
• Apple Push Notification service (APNs) auth key
• .p8
• PKCS8
• ~/.ssh/config: IdentityFile
• chmod
• Google Cloud Platform: gsutil config -e
• Seed phrase

See also

• ssh-keygen [ -R, -t | -p | -i | -y | -f | ~/.ssh/id_rsa | --help ] ~/.ssh/known_hosts
• Public key cryptography, private key, public key, key length, ssh-keygen, ssh-keyscan, Root certificate, KEX, Generate a key
• Private key