Function SecKeyUnwrapSymmetric 

pub unsafe extern "C-unwind" fn SecKeyUnwrapSymmetric(
    key_to_unwrap: NonNull<*const CFData>,
    unwrapping_key: &SecKey,
    parameters: &CFDictionary,
    error: *mut *mut CFError,
) -> Option<CFRetained<SecKey>>

👎Deprecated: renamed to SecKey::unwrap_symmetric

Available on crate features SecBase and SecKey only.