The USPTO granted Patent 7,913,088, a continuation of Jill Pipher's digital signature and authentication cryptographic work.
On March 22, 2011, Jill Pipher received her third cryptography-related patent, U.S. Patent 7,913,088, again titled "Digital signature and authentication method and apparatus." This patent represented a continuation and refinement of the digital signature technology she had helped develop with fellow inventors, further extending the applicability and robustness of lattice-based cryptographic authentication methods.
By the time this patent was granted, Pipher had established a significant body of intellectual property in the field of public-key cryptography, spanning encryption (NTRU) and digital signatures over a period of roughly a decade. This sustained output reflected both the enduring relevance of the underlying mathematical ideas and the practical importance of secure authentication methods in an increasingly digital and interconnected world.
The timing of this patent, granted in 2011, coincided with Pipher's emergence as a prominent academic leader, as she was also serving that same year as the founding director of the Institute for Computational and Experimental Research in Mathematics (ICERM). Her ability to simultaneously advance cutting-edge cryptographic technology while building major research infrastructure exemplifies the breadth of her contributions to mathematics, spanning pure theory, applied technology, and institutional leadership. This patent remains part of the technical legacy underlying lattice-based cryptographic systems used in modern secure communications.