Christopher Patton
Senior Research Engineer at Cloudflare
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolChristopher Patton is a Senior Research Engineer at Cloudflare with 13 years of experience specializing in applied cryptography and systems security. He holds advanced degrees in computer science and a PhD focus in cryptography from the University of Florida, blending deep academic rigor with production-grade engineering. At Cloudflare he contributes to CIRCL, the company's interoperable cryptographic library, driving HPKE implementations, context serialization, and performance/security refinements that reflect evolving IETF drafts. His background includes multiple Google internships working on Chrome Protector and Cloud Security, signaling strong product-facing security experience. Based in San Francisco, he combines low-level cryptographic engineering with practical backend development to ship secure, high-performance libraries. An understated strength is his attention to protocol drift—keeping implementations aligned with draft changes and build-time tooling to reduce risk in deployment.
13 years of coding experience
1 year of employment as a software developer
Master of Science - MS, Computer Science, Master of Science - MS, Computer Science at University of California, DavisDoctor of Philosophy - PhD, Cryptography, Doctor of Philosophy - PhD, Cryptography at University of Florida
German, English
Github Skills (10)
crypt10
crypto10
it-security10
crypto-js10
go10
libcrypto10
cryptography10
security10
elliptic-curve9
golang9
Programming languages (15)
Github contributions (5)
cloudflare/circl
Nov 2020 - Jun 2021
CIRCL: Cloudflare Interoperable Reusable Cryptographic Library
Role in this project:
Back-end Developer / Security Engineer
Back-end Developer / Security EngineerContributions:104 reviews, 6 commits, 14 PRs in 7 months
Contributions summary:Christopher primarily contributed to the Cloudflare Interoperable Reusable Cryptographic Library (CIRCL) by implementing and modifying features related to the Hybrid Public Key Encryption (HPKE) standard. Their work involved adding context serialization functionalities, including marshaling and unmarshaling, and refining the underlying AEAD structure. Additionally, the user focused on enhancing the library's security and performance by implementing build tags to ignore certain ASM generators and updating the codebase to reflect draft changes, like moving to draft-irtf-cfrg-hpke-07.
ecdhsikecryptographicgoed25519
cjpatton/tls-subcerts
May 2018 - Feb 2019
Limited Certificate Delegation for TLS
Contributions:114 pushes, 13 branches in 9 months
letsencryptssldelegationhttp3ssl-certificates
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