Public key cryptography

wikipedia:Public key cryptography

• EdDSA: ed25519, RSA, DSA
• ECDSA: Bitcoin
• BLS digital signature

Commands

Generate public key from private key:

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

Generate a public key from a PEM private key

• openssl rsa -in mykey.pem -pubout > mykey.pub

Generate fingerpring:

• ssh-keygen -l -f /etc/ssh/ssh_host_XXXXkey.pub

• gpg --gen-key
• wg genkey

openssl genrsa

OpenSSH 7.6 (2017)

• Refuse keys <1024 bits in lengh and improve reporting for keys that do not meet this requirement.

Related terms

• X.509
• ssh-copy-id
• ssh-keygen and puttygen
• ssh-keyscan
• sshd logs: Failed publickey for
• Athena IDProtect card
• Minerva attack
• Cisco IOS: Configure public RSA key authentication
• Whitfield Diffie
• Key length
• SHA
• TLS, S/MIME, PGP, GPG
• AWS: aws ec2 import-key-pair, aws ec2 create-key-pair, aws ec2 describe-key-pairs
• BLS digital signature
• sops
• WebAuthn

See also

• Public key cryptography, private key, public key, key length, ssh-keygen, ssh-keyscan, ssh-copy-id, Root certificate, KEX, Generate a key
• Public-key cryptography, Public key certificate, BLS digital signature