awn umar

email : : github : : age public key

I’m a cryptography engineer. My open source work involves systems that keep information private, even under coercion.

My age public key is available here; use it to encrypt information intended for my eyes only. Requires age v1.3.0+.

software

memguard : : secure software enclave for storage of sensitive information in memory
rosen : : modular proxy tunnel that circumvents censorship by encapsulating traffic within a cover protocol
gravity : : experimental user-space data protection utility providing plausibly deniable encryption
ephemeral : : web-based end-to-end encrypted multi-party chat server

posts

subscribe with rss/atom

2024-07-23 : : how monzo generates sensitive secrets for its banking platform ↗
2022-02-15 : : securely delegating trust with signatures and key management ↗
2020-12-16 : : rosen: censorship-resistant proxy tunnel
2020-02-20 : : plausibly deniable encryption
2019-07-20 : : memory retention attacks
2019-07-18 : : encrypting secrets in memory
2019-06-27 : : mutable strings in go
2019-05-02 : : to slice or not to slice
2017-08-03 : : memory security in go
2017-07-30 : : quantum key-exchange

theses

Obfuscating Network Traffic to Circumvent Censorship [pdf]

Explore widely used network traffic fingerprinting and obfuscation techniques. Introduce a modular proxy tunnel framework and evaluate it against state-of-the-art DPI engines and a nation-state adversary.

Minimal Surface Theory: The Mathematics of Soap Films [pdf]

An introduction to minimal surfaces and their relation to soap films, and some ways that they can be created.