Portrait of Karen Easterbrook

Karen Easterbrook

Principal Lead Program Manager


I am a Principal Lead Program Manager in the Security and Cryptography team in Microsoft AI & Research.  I have been in applied research teams in Microsoft for over 12 years, first on the “Venice” Mesh Networking incubation, a hardware project, and for the last 12 years, a variety of security and cryptography projects including searchable encryption, homomorphic encryption, various ECC projects, and most recently post-quantum cryptography.

Prior to joining MSR, I worked on visualization and management tools and infrastructure for IT in Visio and Windows.  I’ve shipped 10 products as a PM or Lead PM, including some interesting work in TCP/IP network discovery, agent-less management of distributed systems, and multi-layered network and distributed systems visualization.  My career started in IT, where I worked for 13 years designing and managing networks and distributed systems, including 4 years at Boeing as an Architect on the 777 program.

I have a B.A. in History from Stanford University.


Elliptic Curve Cryptography (ECC)

Established: January 9, 2012

In the last 25 years, Elliptic Curve Cryptography (ECC) has become a mainstream primitive for cryptographic protocols and applications. ECC has been standardized for use in key exchange and digital signatures. This project focuses on efficient generation of parameters and…

Lattice Cryptography Library

Established: April 19, 2016

LatticeCrypto is a high-performance and portable software library that implements lattice-based cryptographic algorithms. The first release of the library provides an implementation of lattice-based key exchange with security based on the Ring Learning With Errors (R-LWE) problem using new algorithms…

SIDH Library

Established: April 16, 2016

SIDH Library is a fast and portable software library that implements a new suite of algorithms for supersingular isogeny Diffie-Hellman key exchange [1]. The chosen parameters aim to provide 128 bits of security against attackers running a large-scale quantum computer, and 192…


Established: August 26, 2015

FourQlib is an efficient and portable math library that provides functions for computing essential elliptic curve operations on a new, high-performance curve called "FourQ". This curve targets the 128-bit security level and supports computations that are significantly faster than any…

MSR Elliptic Curve Cryptography Library

Established: June 27, 2014

MSR ECCLib is an efficient cryptography library that provides functions for computing essential elliptic curve operations on a new set of high-security curves.  All computations on secret data exhibit regular, constant-time execution, providing protection against timing and cache attacks.  The…

MSR JavaScript Cryptography Library

Established: June 17, 2014

JavaScript cryptographic algorithm implementations suitable for use in all cloud services The MSR JavaScript Cryptography Library has been developed for use with cloud services in an HTML5 compliant and forward-looking manner. The algorithms are exposed via the W3C WebCrypto interface, and…


Established: February 25, 2012

U-Prove components are released in the Security and Cryptography Incubations Quarterly Technology Drop.   Overview A U-Prove token is a new type of credential similar to a PKI certificate that can encode attributes of any type, but with two important…