NuID is a trustless authentication API and decentralized identity solution for websites and applications.
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Take advantage of advanced cryptography and modern password security with our simple Authentication API. NuID offers an easy solution to login so you can focus on what makes your users happy.
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Your style. Fully tune your authentication experience without the effort.
We get it: authentication is one of the first boxes to check when building a website or application. It’s built to get the job done, and then it slowly becomes legacy code that no one wants to touch.
Today’s rapidly evolving security landscape, diverse and context-specific UX needs, and user privacy concerns all require more from traditional authentication. NuID addresses these challenges with a platform that grows and adapts to the new demands of digital identity.
By building with NuID, you ensure your applications and services remain embedded in modern cryptographic best practices.
Because that's what login should do.
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| Service | Max Free Size | Link Duration | Registration? | Key Security Features | Overall Rating | | :--- | :--- | :--- | :--- | :--- | :--- | | | 50 GB | 1-30 days | No | AES-GCM & LUKS encryption; Swiss data protection | ★★★★★ | | Smash | Unlimited | 7 days | No (6-digit code) | Secure by default; no size limit | ★★★★★ | | TransferNow | 5 GB | 7 days | Optional | Secure transfers; optional password protection | ★★★★☆ | | WeTransfer | 3 GB | 3 days | Yes (since 2024) | Basic encryption | ★★★☆☆ | | Wormhole | 10 GB | 24 hours | No | End-to-end encryption (E2EE); temporary links | ★★★★☆ | | Internxt Send | 5 GB | 15 days | No | End-to-end encryption (E2EE) | ★★★★☆ | | Filemail | 5 GB | 7 days | No | Optional E2EE; password protection | ★★★★☆ | The following platforms allow you to send large
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At NuID's core is an established cryptographic method to verify that a user can produce a secret value, such as a password or private key, without revealing that secret to anyone. Ever.
Instead of sharing this secret with an authenticating server, a cryptographic zero knowledge proof of the secret is generated on the client device. The proof is used to verify that the user input the correct authentication secret, without any private authentication data leaving their device.
Combining this capability with emerging distributed ledger technologies removes the need for users to trust anyone with their passwords and other authentication secrets, giving them ownership over their authentication credentials and, eventually, their digital representation across the web.
NuID White Paper
We believe the next wave of technological transformation will bring persistent, privacy-forward digital identity to the web, which will simplify and de-risk the flow of information over our public and private networks.
NuID's open authentication protocol and API were designed to transition seamlessly between web2, web3, and all the webs before and after that. And authentication is only the beginning.
NuID is building a foundation for a decentralized identity ecosystem
that goes beyond just login. Check out the NuID White Paper
to learn about the future of digital identity, or get in touch to discuss
with our team.
Users—people—want more privacy, transparency, and agency in how their online data is managed. In other words, we need to retrofit the internet with a sound identity layer.
To learn more about our vision for trustless authentication and
decentralized identity, check out the NuID White Paper, or get started now with our developer portal.
