Code Signing

macOS and Windows code signing is supported. Windows is dual code-signed (SHA1 & SHA256 hashing algorithms).

On a macOS development machine valid and appropriate identity from your keychain will be automatically used.

Env name	Description
CSC_LINK	The HTTPS link (or base64-encoded data, or file:// link) to certificate (*.p12 file).
CSC_KEY_PASSWORD	The password to decrypt the certificate given in CSC_LINK.
CSC_NAME	macOS-only Name of certificate (to retrieve from login.keychain). Useful on a development machine (not on CI) if you have several identities (otherwise don't specify it).

Travis, AppVeyor and other CI Servers

To sign app on build server you need to set CSC_LINK, CSC_KEY_PASSWORD (and CSC_INSTALLER_LINK, CSC_INSTALLER_KEY_PASSWORD if you build for Mac App Store):

1. Export certificate. Consider to not use special characters (for bash) in the password because “values are not escaped when your builds are executed”.

2. Encode file to base64 (macOS/linux: base64 -i yourFile.p12 -o envValue.txt).

   Or upload *.p12 file (e.g. on Google Drive, use direct link generator to get correct download link).

3. Set CSC_LINK and CSC_KEY_PASSWORD environment variables (and CSC_INSTALLER_LINK/CSC_INSTALLER_KEY_PASSWORD in addition if you build MAS). See Travis or AppVeyor documentation. Recommended to set it in the CI Project Settings, not in the .travis.yml/appveyor.yml. If you use link to file (not base64 encoded data), make sure to escape special characters (for bash) accordingly.

   In case of AppVeyor, don't forget to click on lock icon to “Toggle variable encryption”.

Where to Buy Code Signing Certificate

StartSSL is recommended. Please note — Gatekeeper only recognises Apple digital certificates.

How to Export Certificate on macOS

1. Open Keychain.

2. Select login keychain, and My Certificates category.

3. Select all required certificates (hint: use cmd-click to select several):

   • Developer ID Application: to sign app for macOS.
   • 3rd Party Mac Developer Application: and 3rd Party Mac Developer Installer: to sign app for MAS (Mac App Store).

   Please note – you can select as many certificates, as need. No restrictions on electron-builder side. All selected certificates will be imported into temporary keychain on CI server.

4. Open context menu and Export.