World-leading and developer-friendly
end-to-end encryption.

Integrate state-of-the-art end-to-end encryption into your apps in hours, not months with Seald.
The only certified E2EE platform in the world.

Wimi Framatome psa Lefebvre Sarrut Recare Ourcal Doktor Lpg
Wimi Framatome psa Lefebvre Sarrut Recare Ourcal Doktor Lpg

What is end-to-end encryption (or E2EE)?

End-to-end encryption ensures that only authorized users can access data, not hackers, server administrators, institutions, or even service providers. In other words, it prevents data from being breached if unauthorized access occurs, which is much stricter than encryption in transit combined with encryption at-rest.

  • The only E2EE platform<br/>certified in the world

    The only E2EE platform
    certified in the world

    Our technology passed advanced penetration tests, with no security flaw detected.

  • Invisible and blazing fast<br/>for end users

    Invisible and blazing fast
    for end users

    We optimized our technology. Your users won't see the difference, but their data will.

  • No cryptographic skills<br/>are required

    No cryptographic skills
    are required

    We boiled down all the complexity into a ready-to-use toolkit for app developers.

The problem

Data security is broken.

Data breaches are wreaking havoc around the world. In fact, the global average cost of a data breach in 2023 was $4.45 million per company.

Traditional data security methods are not enough

Traditional data security methods are not enough

Most of the time, security engineers focus their efforts on securing an application by creating a secure perimeter around it with measures such as a setting up WAF, TLS, encryption at-rest, PAM on the servers or using certified servers (ISO 27001, SecNumCloud).

Such an approach has its limits, it does not protect your data when an attacker breaches your application. The good news is that there is a way to protect data from unauthorized access: end-to-end encryption.

End-to-end encryption is difficult to implement alone

End-to-end encryption is difficult to implement alone

End-to-end encryption is the gold standard to ensure that data is secure, but it can be both difficult and time-consuming to implement alone. Oftentimes, developers will attempt to use open-source libraries but being low-level, may make them a poor fit for regular apps.

When building E2EE with an open-source cryptography library, one still needs to choose secure primitives, a robust RNG, implement a secure public key exchange, a private key recovery mechanism, groups management, multi-OS compatibility, and much more.

The solution

Seald allows you to quickly integrate end-to-end encryption, with limited cryptography expertise required.

The complexity is on our side

Start encrypting data in hours

We handle all of the cryptographic complexity so you can focus on what you know bestโ€”your product. Don't spend time on the choices of the primitives, key management, private key recovery, or group management and risk a data breach.

Did you know?

The Seald SDK is available for web, mobile or desktop applications and most languages.

End-to-end encryption

The most effective end-to-end encryption to help protect users data

The Seald solution ensures the highest level of data security and privacy. End-to-end encryption protects you from data breach by encrypting data on the client side. If your servers are attacked, those malicious individuals will still not be able to access the encrypted data.

Did you know?

The Seald SDK follows the latest academic news in cryptography, it has been audited by specialized independent companies and has a certification from the French national cybersecurity agency.

Made for applications

Secure-by-design for all applications

The Seald SDK can be integrated in all kinds of apps (collaboration, healthcare, legaltech, etc.) and encrypt structured or unstructured data in features like chat, forms, file sharing, storage features and more. Your users won't notice the difference, our technology is blazing fast and remains invisible.

Did you know?

Seald was developed on the zero-trust model, even in case of simultaneous breach of data encrypted by Seald and our servers, the confidentiality of the encrypted data remains assured.

Thanks to Seald, our Wimi Armoured solution guarantees the highest level of data security. A real competitive advantage, which allows us to target new markets.
Lionel Roux

Lionel Roux

CEO @Wimi

Lionel Roux

Today in focus


Quickly integrate encryption into your applications with Seald SDKs. You don't need skills in cryptography to integrate them.

import SealdSDK from '@seald-io/sdk'

// Initialize the SDK
const seald = SealdSDK({ apiURL, appId })
// Create your Seald identity
await seald.initiateIdentity({ signupJWT })
// Encrypt a message for another user
const encryptedMessage = await seald.encryptMessage(
  'Super secret message',
   { userIds: ['BOB_002'] }

// And *voilร *!
const message = await seald.decryptMessage(encryptedMessage)