Abstract: Techniques are disclosed for encrypting internet-of-things (IoT) data of an IoT network only once at its inception until its final consumption without intervening encryption/decryption stages/cycles. The present encrypt-decrypt-once design thus eliminates potential exposure of the IoT data in its plaintext form of a traditional approach employing intervening encryption/decryption cycles. The present design is also efficient and reduces the burden on IoT resources by eliminating the need for encrypting and decrypting the data multiple times. To accomplish these objectives, a number of schemes for device enrollment, authentication, key distribution, key derivation, encryption and encoding are disclosed. The devices employ authenticated encryption because it provides confidentiality, integrity, and authenticity assurances on the encrypted data. The final consumption of the IoT data may be at a designated gateway or a corporate system.

Abstract: Techniques are disclosed for securing data in a cloud storage. Plaintext files are stored as secured, encrypted files in the cloud. The ciphering scheme employs per-block authenticated encryption and decryption. A unique file-key is used to encrypt each file. The file-key is wrapped by authenticated encryption in a wrapping-key that may be shared between files. A centralized security policy contains policy definitions which determine which files will share the wrapping-key. Wrapping-keys are stored in a KMIP compliant key manager which may be backed by a hardware security module (HSM). File metadata is protected by a keyed-hash message authentication code (HMAC). A policy engine along with administrative tools enforce the security policy which also remains encrypted in the system. Various embodiments support blocks of fixed as well as variable sizes read/written from/to the cloud storage.

Abstract: Techniques are disclosed for securing data-at-rest at an internet-of-things (IoT) site with an unreliable or intermittent connectivity to the key manager operating at a corporate data center. The IoT site deploys one or more IoT devices/endpoints that generate IoT data according to the requirements of the site. The IoT data generated by these devices is collected/aggregated by one or more gateway devices. The gateways encrypt their data-at-rest gathered from the IoT devices using cryptographic keys. In the absence of a reliable connection to a backend corporate key manager, the design employs LAN key managers deployed locally at the IoT site. The gateways obtain keys from the LAN key managers to encrypt the IoT data before storing it in their local storage. The LAN key managers may periodically download keys from the corporate key manager or generate their own keys and then later synchronize with the corporate key manager.

Abstract: A cellular telecommunications network architecture is described where certain UEs are configured to assist the network to improve coverage in regions of poor radio conditions. In certain embodiments, appropriate UEs are selected to act as a dynamic, out-of-band coverage extensions. Network performance can thereby be improved when serving users at the cell edge (or in other poor radio condition regions of a cell). Data from UEs connected to those assisting UEs is encrypted to allow secure transit of data without requiring modification to the RAN or Core Network.

Abstract: A format-preserving cipher including an encryption and a decryption scheme supporting non-linear access to input data by allowing the selection of portions of data from a potentially larger dataset to be encrypted, thus avoiding a necessarily sequential access into the input plaintext data. The cipher first defines a forward mapping from the allowable ciphertext values to an integer set of the number of such allowable ciphertext values, and a corresponding reverse mapping. It also supports exclusion of a certain set of characters from the ciphering process. An encryption algorithm is provided that encrypts the input plaintext data while preserving its original format and length, and a corresponding decryption algorithm is provided. The cipher advantageously embodies the encryption and decryption of multi-byte values, composite datasets, and credit card numbers, thus fitting a variety of industrial needs.

Abstract: A computer system and methods for securing files in a file system with storage resources accessible to an authenticable user using an untrusted client device in a semi-trusted client threat model. Each file is secured in the file system in one or more ciphertext blocks along with the file metadata. Each file is assigned a unique file key FK to encrypt the file. A wrapping key WK assigned to the file is used for encrypting the file key FK to produce a wrapped file key WFK. A key manager is in charge of generating and storing keys. The file is encrypted block by block to produce corresponding ciphertext blocks and corresponding authentication tags. The authentication tags are stored in the file metadata, along with an ID of the wrapping key WK, wrapped file key WFK, last key rotation time, an Access Control List (ACL), etc. The integrity of ciphertext blocks is ensured by authentication tags and the integrity of the metadata is ensured by a message authentication code (MAC).

Abstract: A cellular telecommunications network architecture is described where certain UEs are configured to assist the network to improve coverage in regions of poor radio conditions. In certain embodiments, appropriate UEs are selected to act as a dynamic, out-of-band coverage extensions. Network performance can thereby be improved when serving users at the cell edge(or in other poor radio condition regions of a cell). Data from UEs connected to those assisting UEs is encrypted to allow secure transit of data without requiring modification to the RAN or Core Network.

Abstract: A computer system and methods for securing files in a file system with storage resources accessible to an authenticable user using an untrusted client device in a semi-trusted client threat model. Each file is secured in the file system in one or more ciphertext blocks along with the file metadata. Each file is assigned a unique file key FK to encrypt the file. A wrapping key WK assigned to the file is used for encrypting the file key FK to produce a wrapped file key WFK. The file is encrypted block by block to produce corresponding ciphertext blocks and corresponding authentication tags. The authentication tags are stored in the file metadata, along with an ID of the wrapping key WK, wrapped file key WFK, last key rotation time, an Access Control List (ACL), etc. The integrity of ciphertext blocks is ensured by authentication tags and the integrity of the metadata is ensured by a message authentication code (MAC).

Abstract: A cellular telecommunications network architecture is described where certain UEs are configured to assist the network to improve coverage in regions of poor radio conditions. In certain embodiments, appropriate UEs are selected to act as a dynamic, out-of-band coverage extensions. Network performance can thereby be improved when serving users at the cell edge (or in other poor radio condition regions of a cell). Data from UEs connected to those assisting UEs is encrypted to allow secure transit of data without requiring modification to the RAN or Core Network.

Abstract: Techniques are disclosed for securing data in a cloud storage. Plaintext files are stored as secured, encrypted files in the cloud. The ciphering scheme employs per-block authenticated encryption and decryption. A unique file-key is used to encrypt each file. The file-key is wrapped by authenticated encryption in a wrapping-key that may be shared between files. A centralized security policy contains policy definitions which determine which files will share the wrapping-key. Wrapping-keys are stored in a KMIP compliant key manager which may be backed by a hardware security module (HSM). File metadata is protected by a keyed-hash message authentication code (HMAC). A policy engine along with administrative tools enforce the security policy which also remains encrypted in the system. Various embodiments support blocks of fixed as well as variable sizes read/written from/to the cloud storage.

Abstract: A format-preserving cipher including an encryption and a decryption scheme supporting non-linear access to input data by allowing the selection of portions of data from a potentially larger dataset to be encrypted, thus avoiding a necessarily sequential access into the input plaintext data. The cipher first defines a forward mapping from the allowable ciphertext values to an integer set of the number of such allowable ciphertext values, and a corresponding reverse mapping. It also supports exclusion of a certain set of characters from the ciphering process. An encryption algorithm is provided that encrypts the input plaintext data while preserving its original format and length, and a corresponding decryption algorithm is provided. The cipher advantageously embodies the encryption and decryption of multi-byte values, composite datasets, and credit card numbers, thus fitting a variety of industrial needs.

Abstract: Techniques are disclosed for securing data in a cloud storage. Plaintext files are stored as secured, encrypted files in the cloud. The ciphering scheme employs per-block authenticated encryption and decryption. A unique file-key is used to encrypt each file. The file-key is wrapped by authenticated encryption in a wrapping-key that may be shared between files. A centralized security policy contains policy definitions which determine which files will share the wrapping-key. Wrapping-keys are stored in a KMIP compliant key manager which may be backed by a hardware security module (HSM). File metadata is further protected by a keyed-hash message authentication code (HMAC). A policy engine along with administrative tools enforce the security policy which also remains encrypted in the system.

Abstract: A format-preserving cipher including encryption and decryption schemes supporting non-linear access to input data by allowing the selection of portions of data from a potentially larger dataset to be encrypted. The cipher first defines a forward mapping from the allowable ciphertext values to an integer set of the number of such allowable ciphertext values, and a corresponding reverse mapping. It also supports exclusion of a certain set of characters from the ciphering process. An encryption algorithm is provided that encrypts the input plaintext data while preserving its original format and length, and a corresponding decryption algorithm is provided. The cipher advantageously embodies the encryption and decryption of multi-byte values, composite datasets, credit card numbers and discontinuous datasets, thus fitting a variety of industrial needs.

Abstract: A format-preserving cipher including an encryption and a decryption scheme supporting non-linear access to input data by allowing the selection of portions of data from a potentially larger dataset to be encrypted, thus avoiding a necessarily sequential access into the input plaintext data. The cipher first defines a forward mapping from the allowable ciphertext values to an integer set of the number of such allowable ciphertext values, and a corresponding reverse mapping. It also supports exclusion of a certain set of characters from the ciphering process. An encryption algorithm is provided that encrypts the input plaintext data while preserving its original format and length, and a corresponding decryption algorithm is provided. The cipher advantageously embodies the encryption and decryption of multi-byte values, composite datasets, and credit card numbers, thus fitting a variety of industrial needs.

Abstract: Techniques are disclosed for securing data in a cloud storage. Plaintext files are stored as secured, encrypted files in the cloud. The ciphering scheme employs per-block authenticated encryption and decryption. A unique file-key is used to encrypt each file. The file-key is wrapped by authenticated encryption in a wrapping-key that may be shared between files. A centralized security policy contains policy definitions which determine which files will share the wrapping-key. Wrapping-keys are stored in a KMIP compliant key manager which may be backed by a hardware security module (HSM). File metadata is further protected by a keyed-hash message authentication code (HMAC). A policy engine along with administrative tools enforce the security policy which also remains encrypted in the system.

Abstract: Shared file systems and methods ensuring high availability of cryptographic keys. The keys are encrypted with at least one shareable master key to generate corresponding encrypted cryptographic keys, which are stored in a key database in the shared file system. A master key manager with access to the key database is elected from among master key manager candidates and is assigned a common virtual address. All master key manager candidates have the shareable master key such that during a failover event the availability of the encrypted cryptographic keys is not interrupted as a new master key manager takes over the common virtual address from the previous master key manager. Additionally, a message authentication code (MAC) is deployed for testing the integrity of keys during their retrieval.

Abstract: A cellular telecommunications network architecture is described where certain UEs are configured to assist the network to improve coverage in regions of poor radio conditions. In certain embodiments, appropriate UEs are selected to act as a dynamic, out-of-band coverage extensions. Network performance can thereby be improved when serving users at the cell edge(or in other poor radio condition regions of a cell). Data from UEs connected to those assisting UEs is encrypted to allow secure transit of data without requiring modification to the RAN or Core Network.

Abstract: A method and apparatus for inserting a watermark into a compiled computer program. A location process specifies an insertion point in the compiled program and a watermark generating process inserts a watermark, based on data to be encoded, into the program at the insertion point. The location process is also utilized to specify the location of watermark data to be decoded.

Abstract: A format-preserving cipher including encryption and decryption schemes supporting non-linear access to input data by allowing the selection of portions of data from a potentially larger dataset to be encrypted. The cipher first defines a forward mapping from the allowable ciphertext values to an integer set of the number of such allowable ciphertext values, and a corresponding reverse mapping. It also supports exclusion of a certain set of characters from the ciphering process. An encryption algorithm is provided that encrypts the input plaintext data while preserving its original format and length, and a corresponding decryption algorithm is provided. The cipher advantageously embodies the encryption and decryption of multi-byte values, composite datasets, credit card numbers and discontinuous datasets, thus fitting a variety of industrial needs.

Abstract: A computer system and methods for securing files in a file system with storage resources accessible to an authenticable user using an untrusted client device in a semi-trusted client threat model. Each file is secured in the file system in one or more ciphertext blocks along with the file metadata. Each file is assigned a unique file key FK to encrypt the file. A wrapping key WK assigned to the file is used for encrypting the file key FK to produce a wrapped file key WFK. The file is encrypted block by block to produce corresponding ciphertext blocks and corresponding authentication tags. The authentication tags are stored in the file metadata, along with an ID of the wrapping key WK, wrapped file key WFK, last key rotation time, an Access Control List (ACL), etc. The integrity of ciphertext blocks is ensured by authentication tags and the integrity of the metadata is ensured by a message authentication code (MAC).