An obfuscated policy data encryption system and method for re-encrypting data to maintain
the confidentiality and integrity of data about a user when the data is stored in a public cloud …

2013-01-29 Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION
reassignment NIPPON TELEGRAPH AND TELEPHONE CORPORATION ASSIGNMENT OF …

(57) ABSTRACT A data provider (1) for use in a digital rights management system comprises
a data protector (2) for protecting data (20), using attribute-based encryption, in dependence …

Encryption has typically been implemented as a method for one user to encrypt data to
another specific user (target recipient). Such that only the target recipient can decrypt and …

(57) ABSTRACT A system for authenticating mobile device users transpar ently is disclosed.
This invention improves on the existing flaws by deriving encryption keys from …

(57) ABSTRACT A domain authority 13 for use in a hierarchy of domain authorities in a
hierarchical cryptographic system. The domain authority 13 comprises a user secret key …

(56) References Cited 2 ()() 7/() 1434 () 7 A 1 6/2007 Avritch et al. 2 ()() 7/() 174362 A| 7/2
()() 7 Phan et¿ 1, US PATENT D ()(" UMENTS 2 ()() 7/() 28 () 483 A 1 12/2 ()() 7 F1 et¿ 1, 2 …

In one embodiment, it is proposed a method for signing a set of binary element comprising n
elements, where n is an integer, by an electronic device. Such method is remarkable in that …

Embodiments described herein relate to apparatuses and methods for registering and
storing a local key associated with a local application of a communication device, includ ing …

Abstract Systems and methods for attribute-based encryption systems that support more
efficient decryption are provided. The disclosed systems and methods can be configured to …