| 摘要 |
FIELD: cryptography.SUBSTANCE: invention relates to encryption and decryption. Unit for encryption processing, wherein unit for encryption processing is located in device for encryption processing and includes: generating unit configured to generate independently a pair of keys, wherein pair of keys has first key used for encryption, and second key used for decryption, and store pair of keys in first storage space, which is in device and does not allow external access, wherein type of first storage space is selected from group consisting of: inner storage space of protection circuits and dedicated write-once storage component, which prevents modification of previously recorded data; unit for obtaining digests configured to perform calculation of digest in relation to device data to obtain data digest of device operation, wherein device operation data is stored in second storage space of device; and encryption unit configured to read first key from first storage space and encrypt data digest of device operation by means of first key to obtain first digital signature.EFFECT: protection of data integrity.24 cl, 7 dwg |
