@php-wasm/webInterfacesExtKeyUsageOn this pageExtKeyUsage Index PropertiesclientAuthcodeSigningemailProtectionserverAuthtimeStampingProperties optionalclientAuthclientAuth?: booleanoptionalcodeSigningcodeSigning?: booleanoptionalemailProtectionemailProtection?: booleanoptionalserverAuthserverAuth?: booleanoptionaltimeStampingtimeStamping?: boolean