Tag
encryption
- Jun 8, 2026 Web Push: Subscription, Encryption, and Delivery The four parties involved in a push message, how the aes128gcm envelope hides the payload from the push service, and which delivery headers decide whether a message is shown or dropped. web platform
- May 30, 2024 Middlebox Ossification and Frozen Invariants How on-path devices that parse protocol fields freeze a design, why visible invariants become dependencies, and the strategies that keep extension points usable. internet protocols
- Jun 17, 2022 Key Escrow for Encrypted Backups How envelope encryption separates the key that protects data from the key that protects keys, why rotation is cheap until it is not, and how escrow can outlive the system it protects. devops