Managing a database for identification of security features of a device that generates digital signatures includes (a) recording in the database for each of a plurality of devices, (i) a public key of a pair of public-private keys of the device, and (ii) information including security features of the device, the security features being associated with the public key in the database, and (b) identifying security features from the database to a recipient of an electronic message for which a digital signature was originated utilizing a private key of the public-private key pair of a particular one of the devices, the security features being for the particular device.