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I need a keychain which can be accessed throughout all users What i meant is, items added in my keychain should be accessible from any user. If i add items in login keychain this is not possible, right? I finally decided to go with security command line tool . Thanks for the response.

Thanks for the response. kSecUseDataProtectionKeychain only available above mac OS 10.15+. I plan to implement in lower version too. What i really need is a separate keychain which is accessible to my app only (unlocked by password provided while creating keychain). Suppose i create a keychain with security command, am i able to use that keychain with Keychain API? I don't want to store in login keychain as it is not accessible for all user. I need a keychain which can be accessed throughout all users, like System keychian. Can I create a keychain in /Library/Keychains ? Help if this is possible.