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Nexera ID Signature Based Gating Contracts

Package Exports

    This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@nexeraprotocol/nexera-id-sig-gating-contracts) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

    Readme

    @nexeraprotocol/nexera-id-sig-gating-contracts

    @nexeraprotocol/nexera-id-sig-gating-contracts

    Signature Based Gating: users are verified in our back-end and receive authorization signatures through our api.

    Smart Contract Architecture Overview

    Architecture Overview

    Contracts Files

    Examples

    ./contracts/gatedExamples/ contains examples of an NFT Minter using our signature based gating contracts. /**

    • Example Gated NFT Minter NFT minting contract with gated access based on off-chain signature verification. This contract extends ERC721 for NFT functionality, TxAuthDataVerifier for signature verification, and Ownable for ownership management.

    • Example Gated NFT Minter (Upgradeable) Upgradeable NFT minting contract with gated access based on off-chain signature verification. This contract extends ERC721Upgradeable for NFT functionality, TxAuthDataVerifierUpgradeable for signature verification, and OwnableUpgradeable for ownership management.

    • Example Multiple Inputs Contract This contract demonstrates a contract inheriting from TxAuthDataVerifier to update variables with signature verification. This contract tests more complex inputs such as bytes inputs or no inputs

    • Non Gated Example NFT Minter for comparison

    Verifiers

    ./contracts/sigVerifiers/ contains the smart contracts used to verify signatures

    • Base Transaction Authentication Data Verifier Provides mechanisms for verifying transaction authentication data, including signature verification and nonce management. This contract is designed to be extended by other contracts requiring transaction authentication based on digital signatures. It includes functionality for:

    • Verifying transaction signatures against a specified signer address.

    • Ensuring transactions have not expired based on their block expiration.

    • Incrementing nonces to prevent replay attacks.

    • The contract utilizes OZ SignatureChecker for signature verification (compatible with both EOA and smart contract signers). We recommend our customers set this to point to our deployed NexeraIDSignerManager contract.

    • Transaction Authentication Data Verifier Contract for verifying transaction authentication data, including signature verification and nonce management. It extends BaseTxAuthDataVerifier to provide core functionality for transaction data verification and inherits Context for access control utilities.

    • Transaction Authentication Data Verifier (Upgradeable) Upgradeable contract for verifying transaction authentication data, including signature verification and nonce management. It extends BaseTxAuthDataVerifier to provide core functionality for transaction data verification. It is intended to be deployed behind a proxy for upgradeability.

    Signer Manager

    ./contracts/signerManager/NexeraIDSignerManager.sol is a smart contract that we use to manage the signer address used in our API.

    That way, if this address is compromised, we can change it without every customer having to call _setSigner.

    This smart contract will be deployed by us and will eventually be controlled by a Gnosis MultiSig.

    Sig Gating Tests

    ./test/ features tests for signature gating using our examples.