• Retesting for All Residential Students: In order to support the health and safety of the residential community, all residential students are required to be retested for COVID-19, September 8 – 10. All residential students received an email with more information on September 1. Please sign up for a testing appointment by this Friday, September 4, at noon. Please email covid19@umbc.edu with questions.

• All UMBC community members are reminded to practice good public health behaviors during the upcoming holiday weekend to limit possible exposure to COVID-19. These include limiting interaction with others, staying physically distant, wearing masks, and washing hands often. 
• Faculty, staff, and students who are approved to be on campus this semester are reminded to continue performing symptom tracking every day.

• Check out the recently updated Enrollment Management website to learn about how to access services provided by Financial Aid and Scholarships, Academic and Pre-Professional Advising, the Registrar’s Office, and more.

• If you have a one-time need to visit campus and have gained appropriate approval(s) but do not have keys to access the building/office that you need to enter, please call UMBC Police Deputy Chief Bruce Perry at (443) 677-2195 or Lieutenant Derrick Johns at (410) 207-0850.

• The mailroom’s new hours for departmental mail pick up are Tuesday, Wednesday, and Thursday, 8 a.m. – 12 p.m.

• Visit the UMBC Together website for recent social media posts and the UMBC Together myUMBC group for weekly event spotlights.

• Retesting for All Residential Students: In order to support the health and safety of the residential community, all residential students are required to be retested for COVID-19, September 8 – 10. All residential students received an email with more information on September 1. Please sign up for a testing appointment by this Friday, September 4, at noon. Please email covid19@umbc.edu with questions.

• All UMBC community members are reminded to practice good public health behaviors during the upcoming holiday weekend to limit possible exposure to COVID-19. These include limiting interaction with others, staying physically distant, wearing masks, and washing hands often. 
• Faculty, staff, and students who are approved to be on campus this semester are reminded to continue performing symptom tracking every day.

• Check out the recently updated Enrollment Management website to learn about how to access services provided by Financial Aid and Scholarships, Academic and Pre-Professional Advising, the Registrar’s Office, and more.

• If you have a one-time need to visit campus and have gained appropriate approval(s) but do not have keys to access the building/office that you need to enter, please call UMBC Police Deputy Chief Bruce Perry at (443) 677-2195 or Lieutenant Derrick Johns at (410) 207-0850.

• The mailroom’s new hours for departmental mail pick up are Tuesday, Wednesday, and Thursday, 8 a.m. – 12 p.m.

• Visit the UMBC Together website for recent social media posts and the UMBC Together myUMBC group for weekly event spotlights.

The UMBC Cyber Defense Lab presents

Privacy-Preserving Cryptographic Protocols 

Professor Matthew Green
Johns Hopkins University

12:00-1:00 pm Friday, 4 September 2020
WebEx: http://umbc.webex.com/meet/sherman  

We investigate the problem of automating the development of adaptive chosen-ciphertext attacks on systems that contain vulnerable format oracles. Rather than simply automate the execution of known attacks, we consider a more challenging problem: to programmatically derive a novel attack strategy, given only a machine-readable description of the plaintext verification function and the malleability characteristics of the encryption scheme. We present a new set of algorithms that use SAT and SMT solvers to reason deeply over the design of the system, producing an automated attack strategy that can decrypt protected messages entirely.

Matthew Green is an Associate Professor at the Johns Hopkins Information Security Institute. His research includes techniques for privacy-enhanced information storage, anonymous payment systems, and bilinear map- based cryptography. He is one of the creators of the Zerocash protocol, which is used by the Zcash cryptocurrency, and a founder of an encryption startup Zeutro. He was formerly a partner in Independent Security Evaluators, a custom security evaluation and design consultancy, and currently consults independently. From 1999-2003, he served as a senior technical staff member at AT&T Laboratories/Research in Florham Park, NJ. email: *protected email* Dr. Green writes a popular blog on applied cryptography, A Few Thoughts on Cryptographic Engineering, A Few Thoughts on Cryptographic Engineering

Host: Alan T. Sherman,, *protected email* Support for this event was provided in part by the NSF under SFS grant DGE-1753681. The UMBC Cyber Defense Lab meets biweekly Fridays. All meetings are open to the public. Upcoming CDL Meetings:

• The Cyber Defense Lab hosts biweekly talks on Fridays 12-1pm.

The UMBC Cyber Defense Lab presents

Privacy-Preserving Cryptographic Protocols 

Professor Matthew Green
Johns Hopkins University

12:00-1:00 pm Friday, 4 September 2020
WebEx: http://umbc.webex.com/meet/sherman  

We investigate the problem of automating the development of adaptive chosen-ciphertext attacks on systems that contain vulnerable format oracles. Rather than simply automate the execution of known attacks, we consider a more challenging problem: to programmatically derive a novel attack strategy, given only a machine-readable description of the plaintext verification function and the malleability characteristics of the encryption scheme. We present a new set of algorithms that use SAT and SMT solvers to reason deeply over the design of the system, producing an automated attack strategy that can decrypt protected messages entirely.

Matthew Green is an Associate Professor at the Johns Hopkins Information Security Institute. His research includes techniques for privacy-enhanced information storage, anonymous payment systems, and bilinear map- based cryptography. He is one of the creators of the Zerocash protocol, which is used by the Zcash cryptocurrency, and a founder of an encryption startup Zeutro. He was formerly a partner in Independent Security Evaluators, a custom security evaluation and design consultancy, and currently consults independently. From 1999-2003, he served as a senior technical staff member at AT&T Laboratories/Research in Florham Park, NJ. email: *protected email* Dr. Green writes a popular blog on applied cryptography, A Few Thoughts on Cryptographic Engineering, A Few Thoughts on Cryptographic Engineering

Host: Alan T. Sherman,, *protected email* Support for this event was provided in part by the NSF under SFS grant DGE-1753681. The UMBC Cyber Defense Lab meets biweekly Fridays. All meetings are open to the public. Upcoming CDL Meetings:

• The Cyber Defense Lab hosts biweekly talks on Fridays 12-1pm.