Certificates:
1- Find the team identifier somewhere in Xcode or the Apple developer portal
2- Export the existing certificate from your keychain. Two files are needed; certificate.p12 and certificate.cer
3- The files exported on the 2nd step needs to be encrypted use the following commands to do that: openssl pkcs12 -nocerts -nodes -out key.pem -in certificate.p12 openssl aes-256-cbc -k your_password -in key.pem -out cert_id.p12 -a