class JSON::JWT

def encrypt(public_key_or_secret, algorithm = :RSA1_5, encryption_method = :'A128CBC-HS256')
  jwe = JWE.new self
  jwe.kid ||= public_key_or_secret[:kid] if public_key_or_secret.is_a? JSON::JWK
  jwe.alg = algorithm
  jwe.enc = encryption_method
  jwe.encrypt! public_key_or_secret
end