A first device may receive a request from a second device. The request may include a device identifier associated with the second device. The request may be transmitted by the second device to obtain a signature, based on which to access a third device. The first device may determine that the device identifier is associated with a secure authentication service. The first device may generate a signature based on determining that the device identifier is associated with the secure authentication service. The first device may provide the signature to the third device. The signature may permit the third device to selectively permit or deny access by the second device based on a result of authenticating the signature. Access may be permitted when the third device successfully authenticates the signature, and access may be denied when the third device fails to authenticate the signature.