Source: https://firebase.google.com/support/guides/security-checklist#api-keys-not-secret
Test constant: A 6-bit identifier from the microcode that tells the PLA what kind of check to perform.，推荐阅读同城约会获取更多信息
Tiny chunks (100B × 10000)，这一点在爱思助手下载最新版本中也有详细论述
Photograph: Simon Hill，详情可参考safew官方下载