Techniques for exporting remote cryptographic keys are provided. In one technique, a proxy server receives, from a secure enclave of a client device, a request for a cryptographic key. The request includes a key name for the cryptographic key. In response to receiving the request, the proxy server sends the request to a cryptographic device that stores the cryptographic key. The cryptographic device encrypts the cryptographic key based on an encryption key to generate a wrapped key. The proxy server receives the wrapped key from the cryptographic device and sends the wrapped key to the secure enclave of the client device.

This microprocessor is configured to compute a code C.sub.1, used to detect an execution fault, using a relationship C.sub.i=P o F.sub.α(D.sub.i), where: F.sub.α(D.sub.i)=E.sub.0 o . . . o E.sub.q o . . . o E.sub.NbE−1(D.sub.i), E.sub.q(x)=T.sub.αm,q o . . . o T.sub.αj,q o . . . o T.sub.α1,q o T.sub.α0,q(X), and T.sub.αj,q is a conditional transposition, configured by a secret parameter α.sub.j,q, that permutes two blocks of bits B.sub.2j+1,q and B.sub.2j,q of the variable x only when the parameter a.sub.j,q is equal to a first value, the blocks B.sub.2j+1,q and B.sub.2j,q of all of the transpositions T.sub.αj,q of the stage E.sub.q being different from one another and not overlapping and the blocks B.sub.2j+1,q and B.sub.2j,q are placed within one and the same block of greater size permuted by a transposition of the higher stage E.sub.q+1.

A method is suggested for providing a response, wherein the method comprises: obtaining a challenge from a host, determining the response based on the challenge, determining an auxiliary value based on the response or the challenge, providing the auxiliary value to the host, obtaining a random value from the host, checking the validity of the challenge based on the random value, and providing the response to the host only if the challenge is valid. Also, corresponding methods running on the host and system are provided. Further, corresponding devices, hosts and systems are suggested.

A key management system for providing encryption of a disk in a client device is provided. The system comprises a trusted platform module (TPM) having a first fragment of a key, a remote storage having a second fragment of the key, and a processing unit to partially boot instructions relating to booting of the client device, send a request for validation of the to the TPM, receive the first fragment of the key from the TPM on successful validation, request for the second fragment of the key with credentials to access the remote storage. The credentials and a network of the request are verified, the second fragment of the key is transmitted on successful validation. The first fragment and the second fragment of the key are combined to generate an encryption key for booting the client device. The first fragment of the key and the second fragment of the key are rotatable.

Various embodiments of network access control (NAC) systems and methods are provided herein to control access to a network comprising a plurality of network endpoint nodes, where each network endpoint node includes a policy information point and a policy decision point. The policy information point within each network endpoint node stores a distributed ledger including one or more client policies that must be satisfied to access the network, and a smart contract including a set of predefined rules defining network access behaviors and actions. Upon receiving a network access request from a client device outside of the network, the policy decision point within each network endpoint node executes the smart contract to determine whether the client device should be granted access, denied access or have restricted access to the network, and executes consensus algorithm to select one of the network endpoint nodes to be a policy decision point leader.

Technologies for secure device configuration and management include a computing device having an I/O device. A trusted agent of the computing device is trusted by a virtual machine monitor of the computing device. The trusted agent executes an attestation algorithm to generate a first secure attestation for the first I/O device and a second secure attestation for the second I/O device, obtains a peer-to-peer communication key, and forwards the peer-to-peer communication key to the first I/O device and a second I/O device to enable secure peer-to-peer communication between the first I/O device and the second I/O device over a communication link secured by the peer-to-peer communication key. Other embodiments are described and claimed.

Methods and systems for creating and managing electronic communications are disclosed. Exemplary methods can compress and encrypt meeting information and encode the compressed and encrypted meeting information into a uniform resource locator (URL) for transmission between one or more devices and a conferencing server.

Apparatuses, systems, and techniques to generate a trusted execution environment including multiple accelerators. In at least one embodiment, a parallel processing unit (PPU), such as a graphics processing unit (GPU), operates in a secure execution mode including a protect memory region. Furthermore, in an embodiment, a cryptographic key is utilized to protect data during transmission between the accelerators.

A method, computer program product, and a system where a secure interface control configures a hardware security module for exclusive use by a secure guest. The secure interface control (“SC”) obtains a configuration request (via a hypervisor) to configure the hardware security module (HSM), from a given guest of guests managed by the hypervisor. The SC determines if the HSM is already configured to a specific guest of the one or more guests, but based on determining that the HSM is not configured to the and is a secure guest the SC forecloses establishing a configuration of the HSM by limiting accesses by guests to the HSM exclusively to the given guest. The SC logs the given guest into the HSM by utilizing a secret of the given guest. The SC obtains, from the HSM, a session code and retains the session code.

A cryptographic acceleration card included in a blockchain integrated station sends negotiation information to a provider of a new disk image, where the negotiation information is used by the provider to determine a deployment key, and where the new disk image is used to update an old disk image included in the blockchain integrated station. The cryptographic acceleration card receives a new hash value encrypted by the provider using the deployment key, where the new hash value corresponds to the new disk image. The cryptographic acceleration card replaces an old hash value corresponding to the old disk image with the new hash value, where the new hash value is compared with a current hash value of a disk image included in the blockchain integrated station to determine whether the disk image matches the new disk image.