solana-keyring-biometric

Biometric authentication (TouchID) for Solana keyring on macOS.

Features

• TouchID Integration: Native macOS LocalAuthentication framework
• Passcode Fallback: Falls back to device passcode when biometrics unavailable
• Cross-platform: No-op on non-macOS platforms (always succeeds)
• Transaction Confirmation: Prompt users before signing

Installation

[dependencies]
solana-keyring-biometric = "0.1"

Usage

use solana_keyring_biometric::{authenticate, confirm_signing, AuthResult};

// Check availability
if solana_keyring_biometric::is_available() {
    // Request authentication
    match authenticate("Confirm your identity")? {
        AuthResult::Authenticated => println!("Success!"),
        AuthResult::Denied => println!("User cancelled"),
        AuthResult::NotAvailable => println!("Biometrics unavailable"),
    }
}

// Confirm transaction signing
match confirm_signing("my-wallet", "Transfer 1.5 SOL to ABC...")? {
    AuthResult::Authenticated => { /* proceed with signing */ }
    _ => { /* handle denial */ }
}

Platform Support

License

Apache-2.0