Securing Your Merchant API Keys: A Developer Guide

API keys are the keys to your kingdom. A compromised API key can lead to unauthorized access, data breaches, and financial loss. Here is how to keep your API keys secure.

1. Store Keys Securely

Never hardcode API keys in your source code. Use environment variables or a secrets manager. At KmarApp, API secrets are encrypted at rest using AES-256.

2. Use Environment-Specific Keys

Generate separate keys for development, staging, and production. This limits the blast radius if a development key is compromised.

3. Rotate Keys Regularly

Set a key rotation policy. Rotate keys immediately if you suspect a compromise. KmarApp allows you to generate new keys without disrupting existing integrations.