Secrets such as secure session cookies for a web browser can be protected on a compute instance with multiple layers of encryption, such as by encrypting key material that in turn controls cryptographic access to the secret. A compute instance can be instrumented to detect when a process attempts to decrypt this key material so that the process requesting decryption can be compared to authorized or legitimate users of the secret.

A method for implementing zero-knowledge private key management for including receiving an identity smart contract creation transaction from a zero-knowledge wallet account, generating an identity smart contract responsive to the identity smart contract creation transaction at an identity smart contract address on the blockchain network, receiving a new validator transaction including a validator address, saving the validator address as an active validator to the identity smart contract, receiving a new user transaction from the use, receiving a transaction to validate the user from the validator, comparing the address from which the validate user transaction was received with the validator address, and upon determining the address from which the validate user transaction was received is identical to the validator address, saving the user as a user to the identity smart contract.

The present disclosure includes apparatuses, methods, and systems for secure communication in a traffic control network. An embodiment includes a memory, and circuitry configured to receive a traffic control public key from a traffic control device, wherein the traffic control public key is received in response to providing, to the traffic control device, a request to modify content of the traffic control device, encrypt data corresponding to vehicle information using the traffic control public key, provide, to the traffic control device, the encrypted data to store the data in the traffic control device, and access a network of traffic control devices, including the traffic control device, via the data stored in the traffic control device.

A method includes linking a first application with a first Transport Layer Security (TLS) library, linking a second application with a second TLS library, obtaining a sequence of cryptographic keys by a first agent, the sequence of cryptographic keys based on an agent key and provided from the first agent to the first TLS library, obtaining the sequence of cryptographic keys by a second agent, the sequence of cryptographic keys based on the agent key and provided from the second agent to the second TLS library, establishing communication between the first TLS library and the first agent to create a first trusted relationship, establishing communication between the second TLS library and the second agent to create a second trusted relationship, and establishing a third trusted relationship between the first agent and the second agent.

A network protocol provides mutual authentication of network-connected devices that are parties to a communication channel in environments where the amount of memory and processing power available to the network-connected devices is constrained. When a new device is added to a network, the device contacts a registration service and provides authentication information that proves the authenticity of the device. After verifying the authenticity of the device, the registration service generates a token that can be used to by the device to authenticate with other network entities, and provides the token to the device. The registration service publishes the token using a directory service. When the device connects to another network entity, the device provides the token to the other network entity, and the other network entity authenticates the device by verifying the token using the directory service.

Secure registration of a new application with a server system is provided. An old application has been registered with the system. A first link between the new application and the system establishes a first key and first check data is communicated from the system to the new application and passed to the old application. A second link between the old application and the system establishes a second key based on input of a credential to the old application; the first check data is communicated from the old application to the system. Enciphered second check data is communicated from the system to the old application over the second link and further encrypted by the old application using a third key. This generates doubly-enciphered check data which is passed to the new application and decrypted using the first key and a fourth key, generated at the new application based on the first check data and input of the credential to the new application.

The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The various embodiments of the present invention disclose a method of secured transmission and reception of discovery message in device to device (D2D) communication system. According to one embodiment, a transmitting user equipment (UE) receives a ProSe group key (PGK) from a Prose function to perform a D2D communication in a D2D public safety group. The transmitting UE then derives a ProSe traffic key (PTK) using the PGK for transmitting data packets in the D2D communication. Using the PTK, the transmitting UE further derives a Prose integrity protection key (PIK) for securing a discovery message to discover one or more receiving UEs. The transmitting UE transmits the integrity protected discovery message using the derived PIK to the receiving UE. In turn, the receiving UE transmits a response message in a secure manner by deriving a PIK using PGK configured for the receiving UE. The various embodiments of the present invention disclose a method of a terminal. According to one embodiment, the method comprises of deriving a first traffic key and a second traffic key based on a group key, deriving a first security key for securing a discovery message based on the first traffic key and a second security key for securing data packets based on the second traffic key, and transmitting the discovery message generated based on the first security key.

A method for secret sharing utilizing multiple features of an input includes: receiving a registration input; obtaining features from the registration input; generating a secret key and a plurality of shared keys according to a shared secret scheme; associating each of the plurality of shared keys with a respective feature of the registration input; generating a plurality of additional features associated with additional keys having a similar format as a shared key associated with a respective feature; storing the plurality of shared keys associated with respective features together with the plurality of additional keys associated with additional features; and encrypting an element to be protected by the secret key using the secret key.

Methods and apparatus to provide extended object notation data are disclosed. An example apparatus includes a data handler having a first input to receive object data and a first output to output an object notation key-value pair for the object data; a string processor having a second input coupled to the first output and a second output to convey the object notation key-value pair without string literals; and a hashing and encryption handler having a third input coupled to the second output and a third output to convey the key-value pair signed with a private key, to convey the key-value pair encrypted with a public key, and to convey an indication that the encrypted key-value pair is encrypted in a key of the encrypted key-value pair.

Embodiments of the present invention provide systems and techniques for changing cryptographic keys in high-frequency transaction environments to mitigate service disruptions or loss of transactions associated with key maintenance. In various embodiments, a server device can employ a working key encrypted with a first master key to decrypt messages being communicated from a client device, whereby each message is encrypted with a first cryptogram that was generated based on the working key encrypted with the first master key. While the working key encrypted with the first master key is being employed, the server device can generate a notification including a second cryptogram generated based on the working key encrypted with a second master key for transmission to the client device. The transmitted notification can cause the client device to encrypt the messages being communicated with the second cryptogram. The server device can concurrently employ the working key encrypted with one of the first and second master keys to decrypt messages received from the client device, whether encrypted with the first cryptogram or the second cryptogram.