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About

Me

Hello!

I am a recent graduate of Oregon State University (OSU). There I received a Bachelors of Science in Computer Science, orientating my classes to specialize in security. This resulted in my knowledge base ranging from software and firmware development to malware analysis, attack creation, and system defense.

Aside from my time at coursework at OSU, I have completed several noteworthy accomplishments that have provided me with relevant work experience. These being competing for a place at a competitive internship with Cambia Health Solutions, being the team lead while developing a Green Smart Gardening System for the Intel Corporation, and co-authoring Balancing Image Privacy and Usability with Thumbnail-Preserving Encryption.

What all this culminates to, is my aim to combine my love for helping people with my enthusiasm for computing. Ideally, I would fulfill my want to help by developing security or responding to threats. Especially if this could be done in an environment where I could bring my passion for computer security, enjoyment in working with others, and want to learn with me.

I hope you have a great rest of your day and thanks for visiting!

Knowledge Base
LANGUAGES:

C/C++, Python, x86, Java, Bash, HTML/CSS

TECHNOLOGIES:

pwntools, AWS Mechanical Turk, Salesforce, Docker, Ansible

SKILLS:

Software & Firmware Development, Debugging, QA, Malware Analysis, Attack Creation, System Defense, Team Management

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Published Work

Balancing Image Privacy and Usability with Thumbnail-Preserving Encryption
AUTHORS:

Kimia Tajik, Akshith Gunasekaran, Rhea Dutta, Brandon Ellis, Rakesh B. Bobba, Mike Rosulek, Charles V. Wright and Wu-chi Feng

ABSTRACT:

In this paper we motivate the need for image encryption techniques which preserve certain visual features of images (and hide all other information), to provide a balance between privacy and usability in the context of cloud-based image storage services. In particular, we introduce the concept of ideal or exact Thumbnail-Preserving Encryption (TPE), a special case of format-preserving encryption, and present a concrete construction. In TPE, a ciphertext is itself an image that has the same thumbnail as the plaintext (unencrypted) image, but that provably leaks nothing about the plaintext beyond its thumbnail. We provide a formal security analysis for the construction, and a prototype implementation to demonstrate compatibility with existing services. We also study the ability of users to distinguish between thumbnail images preserved by TPE. Our findings indicate that TPE is a realistic and promising way to balance usability and privacy concerns for images.

LINKS:
Direct link to paper
Our paper's own website
NDSS: Accepted Papers

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Avocation

Astrophotography
Photography
Succulents
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Contact

Email

If you would like to get in contact with me, please feel free to reach out through the following email:

brandon.mp.ellis@gmail.com

Located

I am currently based out of Corvallis, Oregon...

...and now, dear reader, I'm afraid you know too much