Solana Gateway Integration Library

A Rust crate that can be used by a Solana program to restrict access to holders of a valid Gateway Token.

Gateway tokens are issued by gatekeepers. A cluster of gatekeepers with similar rules for issuing gateway tokens are defined as a Gatekeeper Network.

The on-chain program chooses a gatekeeper network to trust, by adding its public key to a program account.

This library then validates that gateway tokens are issued by gatekeepers in this network and are valid.

Usage

In Cargo.toml toml solana-gateway = "<LATEST VERSION>"

In the instruction processor (typically processor.rs)

```rust use solanagateway::Gateway; use solanaprogram::{ accountinfo::AccountInfo, programpack::Pack, pubkey::Pubkey, };

fn process() { // The owner of the gateway token let owner: AccountInfo; // The gateway token presented by the owner let gatewaytokenaccount_info: AccountInfo; // The gatekeeper network key let gatekeeper: Pubkey;

let gateway_verification_result:Result<(), GatewayError> =
    Gateway::verify_gateway_token_account_info(
        &gateway_token_account_info, &owner.key, &gatekeeper, None
    );

} ```