module Acme::Client::Util

def set_public_key(obj, priv)

Returns nothing.

priv - An OpenSSL::PKey::EC or OpenSSL::PKey::RSA instance.
obj - An OpenSSL::X509::Certificate or OpenSSL::X509::Request instance.

Sets public key on CSR or cert. 
def set_public_key(obj, priv)
  case priv
  when OpenSSL::PKey::EC
    obj.public_key = priv
  when OpenSSL::PKey::RSA
    obj.public_key = priv.public_key
  else
    raise ArgumentError, 'priv must be EC or RSA'
  end
end