Create a Self-Signed Certificate for entitlements iOS 11, iOS 12 JailbreakingCreate a Self-Signed Certificate
Open up the Keychain Access app located in /Applications/Utilties/Keychain Access
From the application menu open Keychain Access -> Certificate Assistant -> Create a Certificate
Enter a name for the certificate, and make note of it, as you will need it later when you sign keychain_dumper. Make sure the Identity Type is “Self Signed Root” and the Certificate Type is “Code Signing”. You don’t need to check the “Let me override defaults” unless you want to change other properties on the certificate (name, email, etc).
last updated march 2019