Secure establishment of cryptographic keys using persistent key component

摘要: An apparatus and method is disclosed for securely establishing a unique cryptographic key in first device, example an Automated Teller Machine (ATM). In preferred embodiment, the ATM includes means entering component processor board, microprocessor persistent, non-volatile memory device electrically disposed between entry board. embodiment of method, detects captures entered by custodian. The then determines whether present device. If not, stored as persistent (PKC). PKC temporarily second component. Each byte combined with corresponding to form key. same established facilitate secure electronic communications. Preferably, custodian at convenient location time subsequent field. Thus, compliance network operating rules voluntary ANSI Standards while utilizing only single