In the Programmed Cryptographic Facility and the Cryptographic Unit Support System, a cryptographic key derived from the host master key and used to encipher operational keys at the host processor.; 在程序加密設(shè)施和密碼設(shè)備支持系統(tǒng)中,由主機(jī)主關(guān)鍵字派生出的一種密碼關(guān)鍵字,用于對(duì)主處理機(jī)上操作關(guān)鍵字加密。