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AuthChain:FHE Auth

AuthChain is a decentralized authentication app leveraging blockchain, passkeys, and Fully Homomorphic Encryption (FHE).

AuthChain:FHE Auth

Created At

Scaling Ethereum 2024

Project Description

AuthChain's technical architecture is built upon a robust combination of cutting-edge technologies, including blockchain, passkeys, and Fully Homomorphic Encryption (FHE). Let's dive deeper into the technical aspects of this innovative authentication solution.

At the core of AuthChain lies a decentralized blockchain network, which serves as the immutable and transparent foundation for the authentication process. This blockchain network is responsible for securely storing and validating authentication data, ensuring that it remains tamper-proof and resistant to unauthorized modifications.

One of the key components of AuthChain is its integration with passkeys, which are cryptographic credentials used for authentication purposes. These passkeys can be derived from biometric information, such as fingerprints or facial recognition, or from hardware-based security keys, like YubiKeys or FIDO2 security keys. By leveraging passkeys on the client-side, AuthChain ensures that only authorized users with the correct credentials can initiate the authentication process, significantly reducing the risk of unauthorized access.

However, the real power of AuthChain lies in its implementation of Fully Homomorphic Encryption (FHE). FHE is a groundbreaking cryptographic technique that allows computations to be performed on encrypted data without ever decrypting it. This means that sensitive authentication secrets, such as passwords or one-time codes, remain encrypted throughout the entire authentication process, providing an unparalleled level of security and privacy.

AuthChain utilizes FHE on-chain, meaning that the authentication computations and validations are performed directly on the blockchain network, while the data remains encrypted. This approach not only eliminates the need for trusted third-party intermediaries but also ensures that user authentication data is never exposed in plaintext, even during the authentication process.

One of the key applications of AuthChain is its support for time-based one-time passwords (TOTP), which are widely used for two-factor authentication (2FA) in various applications and services. AuthChain's TOTP implementation leverages FHE to securely generate and validate TOTPs without exposing the underlying secret keys or user credentials. This feature allows users to easily authenticate themselves across multiple platforms while maintaining the highest levels of security and privacy.

AuthChain's technical architecture also incorporates advanced cryptographic protocols and algorithms to ensure the integrity and authenticity of the authentication process. This includes the use of digital signatures, zero-knowledge proofs, and secure key exchange mechanisms, among others.

Furthermore, AuthChain's decentralized nature and on-chain implementation facilitate transparency and auditability. Users can verify the integrity of the authentication process and the security of their data by inspecting the blockchain transactions and validating the cryptographic proofs associated with each authentication event.

Overall, AuthChain's technical architecture combines the power of blockchain technology, passkeys, and Fully Homomorphic Encryption to create a secure, trustless, and privacy-preserving authentication solution that addresses the limitations and vulnerabilities of traditional authentication systems.

How it's Made

This project was made using Inco Blockchain. It utilises passkeys on client side for added user protection and generates randomness using passkeys, Then using that randomness it creates a secret key which is encrypted and stored on chain, Then using a basic algorithm it

AuthChain's development process involves a combination of cutting-edge technologies and meticulous attention to security and privacy. Here's a glimpse into how AuthChain is made:

Blockchain Integration: AuthChain is built on top of a decentralized blockchain network, which serves as the foundation for storing and validating authentication data. This blockchain network is carefully designed to ensure scalability, security, and transparency. The development team utilizes state-of-the-art blockchain frameworks and libraries to integrate AuthChain seamlessly with the underlying blockchain infrastructure. Passkey Implementation: AuthChain's passkey integration is a critical component that ensures secure authentication. The development team has closely collaborated with leading biometric and hardware security key providers to implement robust and user-friendly passkey authentication mechanisms. This involves integrating with various biometric sensors, such as fingerprint scanners and facial recognition systems, as well as supporting a wide range of hardware security keys like YubiKeys and FIDO2 devices. Fully Homomorphic Encryption (FHE): The heart of AuthChain's security lies in its implementation of FHE. The development team has leveraged advanced cryptographic libraries and frameworks to incorporate FHE capabilities into AuthChain's codebase. This involves implementing complex mathematical algorithms and optimizing computational performance to ensure efficient on-chain FHE computations.

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