[#CKey-data] = xref:CKey.adoc[CKey]::data :relfileprefix: ../ :mrdocs: Pointer to the first key byte, or nullptr if the key is invalid. == Synopsis Declared in `<key.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- std::byte const* data() const; ---- == Return Value A pointer to the first key byte, or nullptr if the key is invalid. [.small]#Created with https://www.mrdocs.com[MrDocs]#