generate_key!() public

Generates a private and public key unless a private key already exists. If this DH instance was generated from public DH parameters (e.g. by encoding the result of DH#public_key), then this method needs to be called first in order to generate the per-session keys before performing the actual key exchange.


dh = OpenSSL::PKey::DH.new(2048)
public_key = dh.public_key #contains no private/public key yet
puts public_key.private? # => true
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