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title: Don’t Trust Password Managers? HIPPO May Be The Answer!
description: HIPPO is a proposed storeless password manager system implemented as a browser extension paired with a central server. Instead of storing passwords in a vault,...
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og:description: HIPPO is a proposed storeless password manager system implemented as a browser extension paired with a central server. Instead of storing passwords in a vault,...
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# Don’t Trust Password Managers? HIPPO May Be The Answer!

**[Hackaday](https://daily.dev/sources/hackaday)** · 3 min read · 23 upvotes · 3 comments

## Summary

HIPPO is a proposed storeless password manager system implemented as a browser extension paired with a central server. Instead of storing passwords in a vault, it computes site-specific passwords on the fly using an Oblivious Pseudorandom Function (OPRF) protocol. The user's master passphrase and the site domain are hashed, blinded, and processed with the server's secret key — neither side ever sees the other's raw secret. The result is a unique, high-entropy, deterministic password per site, auto-filled by the extension. The tradeoff is that the HIPPO server becomes a single point of failure, and the system doesn't yet handle 2FA. It remains a research concept, not a live service.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://hackaday.com/2026/04/15/dont-trust-password-managers-hippo-may-be-the-answer/>

## Community discussion

Top comments from developers on daily.dev.

**@whoami8** · 3 upvotes

> I have heard of this kind of unique password generators for a long time now. I am not at all convinced simply because we use our password not only on our computers but also with our phones, tablets etc... I do not see how such service would work with this devices.
>
> Maybe I should try one day, but for now I will stick with my self hosted password manager :)

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---

Tags: [#devtools](https://daily.dev/tags/devtools), [#cryptography](https://daily.dev/tags/cryptography)

[View this post on daily.dev](https://daily.dev/posts/don-t-trust-password-managers-hippo-may-be-the-answer--kcauytxqx)

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