class OpenSSL::PKey::RSA

def set_crt_params(dmp1, dmq1, iqmp)
  self.dmp1 = dmp1
  self.dmq1 = dmq1
  self.iqmp = iqmp
  self
end

def set_factors(p, q)
  self.p = p
  self.q = q
  self
end

def set_key(n, e, d)
  self.n = n
  self.e = e
  self.d = d
  self
end