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securityd — Security context daemon for Authorization and cryptographic
securityd maintains security contexts and arbitrates cryptographic opera-
tions and Security Authorizations. Access to keychain items is routed
through securityd to enforce access controls and to keep private keys out
of user process address space. Authorization calls also communicate with
securityd to enforce rules contained in the /etc/authorization database.
All user interaction with securityd is mediated through the Security
This command is not intended to be invoked directly.
securityd was first introduced in Mac OS X version 10.0 (Cheetah) as the
“Security Server” and was renamed in 10.4 (Panther).