openssl

• List secure ciphers
• Select cipher suites
• List curves
• Generate DHparam file
• Generate private key
  • RSA
  • ED25519
• Generate a certificate request
• Export client P12/PFX
• Certification Authority
  • Create
    • init
    • request
    • signature
    • quick & dirty variant
    • dirtier certificate only variant
  • Sign certificate request
    • from CA key & certificate
    • from proper CA