Is the connection by google-api-php-client SSL?

Question

I am accessing Google Cloud API (Calendar, Sheets) resources from my php app by authenticating as a service account.
Is the communication made by google-api-php-client encrypted?
I want to know if my service account credentials are being transferred securely over https.

Thanks for your help!

Answer 1

I want to know if my service account credentials are being transferred securely over https.

https stands for Hypertext Transfer Protocol Secure. So yes, it is secure. https always involves SSL. As long as the SSL-Certificates are valid, (which they propably are), everythig is fine.