Alternatives
Products that do what HyperCrypt does
Device-bound encryption that eliminates password fatigue
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2016 · zemanta.github.io
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Google’s recent announcement of a proposed ‘Device Bound Session Credentials’ feature[1] for Chrome reminded me of a project we worked on last year at my company. We focus on fraud prevention at signup and login (preventing multi-accounting and account theft), but some customers were concerned about post-login security and asked us to add a session hijacking prevention feature to our fraud prevention API. In the end, we decided to just implement a solution in Javascript. We call it session-lock, and it can be used today across all browsers[2] and, theoretically, native mobile apps. For a…
2024 · session-lock.keyri.com
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Hi HN, I built DevicePrint after running into problems with duplicate accounts and unreliable cookies in my own projects. DevicePrint is a lightweight device fingerprinting tool designed for developers. It helps identify devices across sessions without relying on cookies. Use cases include fraud detection, preventing duplicate signups, and security-sensitive workflows. I'd really appreciate feedback — especially around privacy concerns or edge cases you’ve run into. Link: https://deviceprint.io
Jan 2026
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This project has been kicking around in my head since I first heard about the webauthn PRF extension in early 2024. I've slowly chipped away at it since, and finally got things to a shareable state over the summer thanks to a very fun parental leave. Headed back to work tomorrow, so I figure there's no time like the present. tldr: A client-held encryption key derived during passkey authentication encrypts all sensitive user data prior to persistence so that only the user is able to decrypt and reuse that data on their device. This allows short-lived, privacy-preserving age proofs to be…
19d ago · loginwithone.com
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2024 · zama.ai
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2024 · webcrypto-private-messages.vercel.app
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2021 · github.com
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I built SecretMemoryLocker (https://secretmemorylocker.com), a file encryption tool that generates keys dynamically from your answers to personal questions instead of using a static master password. This makes offline brute-force attacks much more difficult. Think of it as a password manager that meets mnemonic seed recovery, but without storing any sensitive keys on disk. Why? I kept losing master passwords and wanted a solution that wasn't tied to a single point of failure. I also wanted to create a "digital legacy" that my family could access only under specific conditions. The…
2025 · github.com
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