摘要:
A method to allow programs running within the application space of a device with a secure processor and a trusted computing base to flexibly use certificates that describe the required system state. An information processing device including PSC database (1112), Component and PSC Map (1202), and OS support (1200).
摘要:
A terminal that performs secure boot processing when booting, thereby booting reliably even if, during updating of a software module, the power is cut off or the update is otherwise interrupted. The terminal comprises a CPU, a software module storage unit, a certificate storage unit, an updating unit for updating the software module and certificate, a security device provided with a configuration information storage unit for storing the configuration information of the software module, an alternate configuration information storage unit for storing the configuration information of a software module in the configuration before the update, and a boot control unit for verifying and executing the software module by using the certificate. The terminal verifies the certificate of the software module by comparing the configuration information stored by the configuration information storage unit with the configuration information stored by the alternate configuration information storage unit.
摘要:
A method to allow a device to boot in a secure fashion, even though some of the components within the secure device's firmware may be not present, not authorised, or not correctly operating.
摘要:
The present invention provides an information processing device, an authentication system, etc. that save a server the trouble of updating a database, etc., even when a software module in a client device is updated, and that are capable of verifying whether software modules that have been started in the client device are valid. The terminal device A100 holds private keys 1 and 2, and performs authentication processing with the terminal device B101 using the private key 2. The private key 1 has been encrypted such that the private key 1 is decryptable only when secure boot is completed. The private key 2 has been encrypted such that the private key 2 is decryptable using the private key 1 only when the application module X that has been started is valid. When the authentication processing is successful, the terminal device B101 verifies that the terminal device A100 has completed secure boot and the application module X that has been started in the terminal device A100 is valid. Also, the terminal device B101 performs the authentication processing using the same private key 2, regardless of whether a program pertaining to the secure boot of the terminal device A100 is updated or not.
摘要:
A method is executed which is for managing the optional trusted components that are active within a device, such that the device itself controls the availability of trusted components. The device includes: a storing unit which stores a plurality of pieces of software and a plurality of certificates; a receiving unit which receives the certificates; and a selecting unit which selects one of the certificates. The device further includes an executing unit which verifies an enabled one of the plurality of pieces of software using the selected and updated one of the certificates.
摘要:
A method for executing a predetermined software component which is verifiable against integrity measurements, the method including (i) providing a first mapping from logical identifiers to software component enabled status flags, (ii) providing a second mapping from the logical identifiers and previous software component statuses information to actual integrity measurement certificates containing verification data, (iii) looking up the first mapping for a given logical identifier identifying the predetermined software component to get a status flag indicating whether the predetermined software component is enabled, (iv) if the status flag indicates that the predetermined software component is not enabled, updating a current integrity measurement stored within a disabled integrity measurement certificate, and (v) if the status flag indicates that the predetermined software component is enabled and verification of the predetermined software component is successful, updating a current integrity measurement stored within an integrity measurement certificate.
摘要:
It is possible to update and re-seal sealed data having a usability condition of matching with predetermined terminal environment information during a secure boot without rebooting a terminal when a program using the sealed data is updated. An information processing terminal (10) has first sealed data (310, 320, 330) respectively having usability conditions (312, 322, 332) of matching with predetermined terminal environment information during a secure boot and second sealed data (340, 350, 360) respectively having usability conditions (342, 352, 362) of matching with terminal environment information upon completion of the secure boot. Upon completion of the secure boot, the second sealed data is unsealed and the first sealed data is resealed using the unsealed data (341, 351, 361).
摘要:
A method to allow a device to boot in a secure fashion, even though some of the components within the secure device's firmware may not be present, not correctly authorized, or not correctly operating.
摘要:
An information processing terminal includes first sealed data respectively having usability conditions of matching with predetermined terminal environment information during a secure boot and second sealed data respectively having usability conditions of matching with terminal environment information upon completion of the secure boot. Upon completion of the secure boot, the second sealed data is unsealed and the first sealed data is resealed using the unsealed data. It is possible to update and re-seal sealed data having a usability condition of matching with predetermined terminal environment information during a secure boot without rebooting a terminal when a program using the sealed data is updated.
摘要:
A method to allow a value to be written into one PCR domain, only if values from a second PCR domain are valid, thus ensuring the extension of the chain of trust between domains.