William Duane, Peter Röstin: System and methods for maintaining and distributing personal security devices. RSA Security, Wilmer Cutler Pickering Hale and Dorr, September 19, 2006: US07111172 (202 worldwide citation)

This invention relates to methods and apparatus for securely accessing and providing information including the use of a personal security device on a client where the client is subject to compromise.

William M Duane, Peter Röstin: System and method for certificate exchange. RSA Security, BainwoodHuang, December 2, 2008: US07461250 (182 worldwide citation)

In an embodiment of a system and method according to the present invention, a chain of one or more certificates certifying a principal's public key is exchanged for a single substitute certificate. The substitute certificate is used as a replacement for the certificate chain. The substitute certific ...

Peter Röstin, Magnus Nyström, William M Duane: Secure seed generation protocol. EMC Corporation, Ryan Mason & Lewis, July 12, 2011: US07979707 (6 worldwide citation)

Techniques for secure generation of a seed for use in performing one or more cryptographic operations, utilizing a seed generation protocol carried out by a seed generation client (110c) and a seed generation server (110s). The seed generation server (110s) provides a first string to the seed genera ...