摘要:
A Direct Anonymous Attestation (DAA) scheme using elliptic curve cryptography (ECC) and bilinear maps. A trusted platform module (TPM) may maintain privacy of a portion of a private membership key from an issuer while joining a group. Moreover, the TPM can outsource most of the computation involved in generating a signature to a host computer.
摘要:
A technique to enable secure application and data integrity within a computer system. In one embodiment, one or more secure enclaves are established in which an application and data may be stored and executed.
摘要:
For each memory location in a set of memory locations associated with a thread, setting an indication associated with the memory location to request a signal if data from the memory location is evicted from a cache; and in response to the signal, reloading the set of memory locations into the cache.
摘要:
Encrypting data in as cascaded block cipher system may be accomplished by applying a first encryption algorithm using a secret shared between first and second parties as a key to generate a secret inner key; applying a second encryption algorithm for a predetermined number of rounds using the secret inner key to generate a plurality of blocks of ciphertext data from a plurality of blocks of plaintext data; and repeating the applying the first encryption algorithm and the applying the second encryption algorithm steps.
摘要:
Secure storage and retrieval of a unique value associated with a device to/from a memory of a processing system. In at least one embodiment, the device needs to be able to access the unique value across processing system resets, and the device does not have sufficient non-volatile storage to store the unique value itself. Instead, the unique value is stored in the processing system memory in such a way that the stored unique value does not create a unique identifier for the processing system or the device. A pseudo-randomly or randomly generated initialization vector may be used to vary an encrypted data structure used to store the unique value in the memory.
摘要:
Delivering a Direct Proof private key to a device installed in a client computer system in the field may be accomplished in a secure manner without requiring significant non-volatile storage in the device. A unique pseudo-random value is generated and stored in the device at manufacturing time. The pseudo-random value is used to generate a symmetric key for encrypting a data structure holding a Direct Proof private key and a private key digest associated with the device. The resulting encrypted data structure is stored on a protected on-liner server accessible by the client computer system. When the device is initialized on the client computer system, the system checks if a localized encrypted data structure is present in the system. If not, the system obtains the associated encrypted data structure from the protected on-line server using a secure protocol. The device decrypts the encrypted data structure using a symmetric key regenerated from its stored pseudo-random value to obtain the Direct Proof private key. If the private key is valid, it may be used for subsequent authentication processing by the device in the client computer system.
摘要:
In one implementation, a method for ensuring the trustworthiness of graphical user interfaces is described wherein a computing system user selects and/or modifies an image to be used as at least a portion of the background of one or more visual elements of a graphical user interface of a trusted computing environment. The user selected background image facilitates recognition by the user of the trustworthiness of the environment's graphical user interface when it is displayed to the user. The computing system seals the selected image or a modified version of the selected image within the trusted computing environment to prevent access to that image by computing environments other than the trusted computing environment. Additional embodiments are described and claimed.
摘要:
A password is split into a plurality of pieces. The pieces are stored at different remote servers. The different remote servers have the property that together they can determine that the user has knowledge of the correct password. If any subset of the servers are compromised, the compromised subset cannot convince any remaining servers that they know the password.
摘要:
According to an embodiment of the invention, a method and apparatus for session key exchange are described. An embodiment of a method comprises requesting a service for a platform; certifying the use of the service for one or more acceptable configurations of the platform; and receiving a session key for a session of the service, the service being limited to the one or more acceptable configurations of the platform.
摘要:
Receiving a request for an attestation of platform configuration from an attestation requestor, receiving an acceptable configuration, and if the platform matches the acceptable configuration, sending an attestation of platform configuration including a signed response indicating that the platform configuration matches an acceptable configuration to the attestation requester.