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# Security Constants

## Topics

### Constants

[`var kAuthorizationExternalFormLength: Int32`](/documentation/Security/kAuthorizationExternalFormLength)

The number of bytes in an external form structure’s array.

[`var kAuthorizationFlags: String`](/documentation/Security/kAuthorizationFlags)

[`let kSecCFErrorResourceRecursive: CFString`](/documentation/Security/kSecCFErrorResourceRecursive)

[`let kSecCodeInfoDefaultDesignatedLightweightCodeRequirement: CFString`](/documentation/Security/kSecCodeInfoDefaultDesignatedLightweightCodeRequirement)

[`let kSecCodeInfoStapledNotarizationTicket: CFString`](/documentation/Security/kSecCodeInfoStapledNotarizationTicket)

[`let kSecImportToMemoryOnly: CFString`](/documentation/Security/kSecImportToMemoryOnly)

[`let kSecMatchHostOrSubdomainOfHost: CFString`](/documentation/Security/kSecMatchHostOrSubdomainOfHost)


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