The system of key distribution, and.Method for secure distribution of information encryption key of a unit of key distribution for a unit for receiving the key through a communication link

摘要

"The system of key distribution, and.Method for secure distribution of information encryption key of a unit of key distribution for a unit for receiving the key through a communication link.The invention relates to secure distribution of a private key (k) to a distribution unit (1) to a receiving unit (2) and is based on providing each of the unit.Distribution and the receiving unit with a circuit protector which maintains a private key unique to the original circuit protector.The circuit protector (20) of the receiving unit (2) is associated with a certificate (cert 2) maintaining information about the type of the circuit protector.The circuit protector (10) of the distribution unit requests the certificate to verify the authenticity by using a public key of a certificate issues.Based on the information of the type of the certificate.If the circuit protector (20) of the receiving unit represents a type of circuit that is acceptable to protect private key (k) to be distributed.If it is verified that the circuit protector is acceptable, the private key is encrypted and transmitted to the same.The key received is unencrypted and stored in the circuit protector unit of receipt.In this way, the private key is protected during transfer and can be distributed and protected precisely in one or more units of receipt.