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module JWT
class RSAToken < Token
attr_reader :key_file
def initialize(key_file)
super()
@key_file = key_file
end
def encoded
headers = {
kid: kid
}
JWT.encode(payload, key, 'RS256', headers)
end
private
def key_data
@key_data ||= File.read(key_file)
end
def key
@key ||= OpenSSL::PKey::RSA.new(key_data)
end
def public_key
key.public_key
end
def kid
fingerprint = Digest::SHA256.digest(public_key.to_der)
Base32.encode(fingerprint).split('').each_slice(4).each_with_object([]) do |slice, mem|
mem << slice.join
end.join(':')
end
end
end