Security Best Practices

Channel Security

For API Providers

1. Signature Verification

   // Always verify signatures
   if !verify_signature(message, signature, sender) {
     return Err(AuthError::InvalidSignature);
   }

2. Nonce Management

   // Check nonce ordering
   if new_nonce <= current_nonce {
     return Err(AuthError::InvalidNonce);
   }

3. Balance Verification

   // Verify sufficient balance
   if channel.balance < required_amount {
     return Err(AuthError::InsufficientBalance);
   }

For API Consumers

1. Private Key Security

   // Never expose private keys in code
   const privateKey = process.env.PRIVATE_KEY;
   if (!privateKey) {
     throw new Error("Missing private key");
   }

2. Channel Monitoring

   // Regular balance checks
   const monitor = setInterval(() => {
     const state = pipeGate.getChannelState(channelId);
     if (state.balance < minimumBalance) {
       // Handle low balance
     }
   }, 60000);

Rate Limiting

use tokio::time::{Duration, Instant};
 
// Implement rate limiting
let mut last_request = Instant::now();
if last_request.elapsed() < Duration::from_secs(1) {
    return Err(AuthError::RateLimited);
}

Error Handling

try {
  await pipeGate.createPaymentChannel(params);
} catch (error) {
  if (error instanceof AuthError) {
    // Handle authentication errors
  } else if (error instanceof PaymentError) {
    // Handle payment errors
  } else {
    // Handle other errors
  }
}