[macOS] import cer and trust root cer

 security add-trusted-cert -r trustRoot -k  ~/Library/Keychains/login.keychain file.pem   

Adding trusted root certificates to the server

 Ref: https://manuals.gfi.com/en/kerio/connect/content/server-configuration/ssl-certificates/adding-trusted-root-certificates-to-the-server-1605.html

If you want to send or receive messages signed by root authorities and these authorities are not installed on the server, you must add a trusted root certificate manually.

Use the following steps to add or remove trusted root certificates to/from a server.

Mac OS X

Function	Method
Add	Use command: sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain ~/new-root-certificate.crt
Remove	Use command: sudo security delete-certificate -c "<name of existing certificate>"

Windows

Function	Method
Add	Use command: certutil -addstore -f "ROOT" new-root-certificate.crt
Remove	Use command: certutil -delstore "ROOT" serial-number-hex

Linux (Ubuntu, Debian)

Function	Method
Add	Copy your CA to dir /usr/local/share/ca-certificates/ Use command: sudo cp foo.crt /usr/local/share/ca-certificates/foo.crt Update the CA store: sudo update-ca-certificates
Remove	Remove your CA. Update the CA store: sudo update-ca-certificates --fresh

NOTE

Restart Kerio Connect to reload the certificates in the 32-bit versions or Debian 7.

Linux (CentOs 6)

Function	Method
Add	Install the ca-certificates package: yum install ca-certificates Enable the dynamic CA configuration feature: update-ca-trust force-enable Add it as a new file to /etc/pki/ca-trust/source/anchors/: cp foo.crt /etc/pki/ca-trust/source/anchors/ Use command: update-ca-trust extract

NOTE

Restart Kerio Connect to reload the certificates in the 32-bit version.

Linux (CentOs 5)

Function	Method
Add	Append your trusted certificate to file /etc/pki/tls/certs/ca-bundle.crt cat foo.crt >>/etc/pki/tls/certs/ca-bundle.crt

NOTE

Restart Kerio Connect to reload the certificates in the 32-bit version.

VS Code: Fixing Git Certificate Issues

Ref: https://dougdefrank.wordpress.com/2018/02/28/vs-code-fixing-git-certificate-issues/ 

git config --system http.sslBackend schannel