Abstract: Systems and methods for a multiple value packing scheme for homomorphic encryption are described, including at a server, generating a plurality of encrypted payloads, each having a plurality of data values; and at a client, receiving each of the encrypted payloads having the plurality of data values; and multiplying one or more of the data values of one of the encrypted payloads by one or more other data values in one or more of the other encrypted payloads, to generate a product that represents the summation of data values corresponding to the multiplied one or more data values of the encrypted payloads and the one or more of the other data values in the one or more other encrypted payloads.

Abstract: Systems and methods for a multiple value packing scheme for homomorphic encryption are described, including at a server, generating a plurality of encrypted payloads, each having a plurality of data values; and at a client, receiving each of the encrypted payloads having the plurality of data values; and multiplying one or more of the data values of one of the encrypted payloads by one or more other data values in one or more of the other encrypted payloads, to generate a product that represents the summation of data values corresponding to the multiplied one or more data values of the encrypted payloads and the one or more of the other data values in the one or more other encrypted payloads.

Abstract: Processing a query, includes, at a client, receiving a user-generated query having a plurality of recognizable terms, securing the user-generated query to generate an encrypted query, so that the plurality of recognizable terms generated by the user-generated query cannot be determined by a server, transmitting the encrypted query to the server, to perform the query on encrypted data comprising a mix of regular data and secure data previously provided by the client, wherein at least one of selection criteria of the query and identities of selected records of the query result cannot be determined by the server, and interpreting a result of the query provided by the server, and providing an output of the query to the user having the plurality of recognizable terms.

Abstract: Aggregated transaction data from a transaction data provider may be encrypted and exchanged with a content item selection system using commutative encryption algorithms. The transaction data provider and content item selection system may utilize a set of common identifiers that are each encrypted using a respective commutative encryption algorithm of the transaction data provider or content item selection system. The other of the transaction data provider or content item selection system encrypts the single-encrypted common identifier using a respective commutative encryption algorithm to generate double encrypted common identifiers. The double encrypted common identifiers may be used to match a set of common identifiers with transaction data. The transaction data may be encrypted and/or may include random offset values.

Abstract: Systems and methods for faster public key encryption using the associated private key portion are described, including encrypting a plaintext into a ciphertext, where the encrypting uses a public key and a corresponding private key; and storing the ciphertext.

Abstract: An encrypted resource is stored in association with an access control list. A request to retrieve the resource is received. The wrapped key and the authentication credentials are sent, from the application server system, to a key server system. An unencrypted version of the resource encryption key is received from the key server system if the key server system determines that the authentication credentials correspond to a user in the group of users identified by the group identifier. The stored encrypted resource is decrypted using the received unencrypted version of the resource encryption key to generate an unencrypted version of the resource. The unencrypted version of the resource is sent, from the application server system, to the client application.

Abstract: Processing a query, includes, at a client, receiving a user-generated query having a plurality of recognizable terms, securing the user-generated query to generate an encrypted query, so that the plurality of recognizable terms generated by the user-generated query cannot be determined by a server, transmitting the encrypted query to the server, to perform the query on encrypted data comprising a mix of regular data and secure data previously provided by the client, wherein at least one of selection criteria of the query and identifies of selected records of the query result cannot be determined by the server, and interpreting a result of the query provided by the server, and providing an output of the query to the user having the plurality of recognizable terms.

Abstract: Systems and methods for faster public key encryption using the associated private key portion are described, including encrypting a plaintext into a ciphertext, where the encrypting uses a public key and a corresponding private key; and storing the ciphertext.

Abstract: Homomorphic cryptography on numerical values in digital computing is described, including converting a numerical value encoded in a bit string of a first size to another bit string of a second size, which is different from the first size; encrypting the numerical value in the another bit string to produce a ciphertext; and storing the ciphertext.

Abstract: This document describes methods and systems by which a data storage service migrates a volume of stored data from an unencrypted format to an encrypted format while still permitting user access to the data. The encryption process uses migration markers to identify records that have undergone the encryption process. When migration is complete, the service removes the migration markers and retains the encrypted data in a data storage facility.

Abstract: Methods and systems are provided for securing integrated base stations, such as base station routers (BSRs), in which a SIM card is operatively coupled with a secured portion of a base station and a secure association is established therebetween to facilitate encryption key exchange between the secured portion of the base station and a core network.

Abstract: In one embodiment, the method performed by mobile equipment to authenticate communication with a network includes generating keys using cellular authentication and voice encryption, and then generating an authentication key based on these keys. The authentication key is used to generate an expected message authentication code used in authenticating the network according to authentication and key agreement security protocol.

Abstract: In one embodiment, the method performed by mobile equipment to authenticate communication with a network includes generating keys using cellular authentication and voice encryption, and then generating an authentication key based on these keys. The authentication key is used to generate an expected message authentication code used in authenticating the network according to authentication and key agreement security protocol.

Abstract: In an encryption method, an input block of data is reversibly processed to produce a string that is at least partially randomized. The randomized string is then encrypted by a block cipher. In decryption, the input block of encrypted data is first decrypted with respect to the block cipher. Then the randomization is reversed.

Abstract: In one embodiment, a traffic encryption key is generated based on a count value associated with a mobile. The count value is indicative of network accesses by a mobile, and the traffic encryption key is for encrypting communication traffic between the mobile and a base station. Generation of the traffic encryption key at a base station may be triggered by receipt of a message indicating that the mobile may handoff to the base station. In this embodiment, the message includes the count value. In another embodiment, the traffic encryption key is generated based on the count value and a key count. The mobile may trigger updating the traffic encryption key by changing the key count, and sending the new key count to the base station in a traffic encryption key update request message.

Abstract: A resource in unencrypted form and a wrapped key are received in a request from an application server system and at a key server system. The wrapped key includes a resource encryption key and a user identifier that have been encrypted using a master key. The user identifier identifies a user that is permitted to use the resource encryption key to decrypt the resource. The request does not include the user identifier. The wrapped key is decrypted to access the resource encryption key. The resource in unencrypted form is encrypted into an encrypted resource with the resource encryption key. The encrypted resource is sent to the application server system.

Abstract: Methods and systems are provided for securing integrated base stations, such as base station routers (BSRs), in which a SIM card is operatively coupled with a secured portion of a base station and a secure association is established therebetween to facilitate encryption key exchange between the secured portion of the base station and a core network.

Abstract: A seed value is received and a resource encryption key is generated from the seed value. The resource encryption key may be sent to an application server such that the application server system is able to encrypt a resource using the resource encryption key. Authentication credentials and a wrapped key are received and the wrapped key is decrypted to generate an unwrapped key that includes the resource identifier, the resource encryption key, and the user identifier in unencrypted form. The user identifier is accessed from the unwrapped key it is determined that the received authentication credentials correspond to the accessed user identifier. The resource encryption key is sent in unencrypted form to the application server system such that the application server system can decrypt the resource using the resource encryption key in unencrypted form.

Abstract: An encrypted resource is stored in association with an access control list. A request to retrieve the resource is received. The wrapped key and the authentication credentials are sent, from the application server system, to a key server system. An unencrypted version of the resource encryption key is received from the key server system if the key server system determines that the authentication credentials correspond to a user in the group of users identified by the group identifier. The stored encrypted resource is decrypted using the received unencrypted version of the resource encryption key to generate an unencrypted version of the resource. The unencrypted version of the resource is sent, from the application server system, to the client application.

Abstract: Authentication credentials are received at a key server system. A service associated with the wrapped key is identified. A master key is accessed based on the identified service, the master key being associated with the identified service. The wrapped key is decrypted to generate an unwrapped key that includes the resource identifier, the resource encryption key, and the user identifier in unencrypted form. The user identifier is identified accessed from the unwrapped key. The received authentication credentials are determined to correspond to the accessed user identifier. In response to determining that the received authentication credentials correspond to the accessed user identifier, the resource encryption key are sent in unecrypted to the application server system such that the application server system can decrypt the resource using the resource encryption key in unencrypted form.