In Ciphertext-Policy Attribute-Based Encryption (CP-ABE), a user secret key is associated with a set of attributes, and the ciphertext is associated with an access policy over attributes. The user can decrypt the ciphertext if and only if the attribute set of his secret key satisfies the access policy specified in the ciphertext. Several CP-ABE schemes have been proposed, however, some practica...

BACKGROUND Acute brain embolization (ABE) in left-sided infective endocarditis has significant implications for clinical decision making. The true incidence of ABE, including subclinical brain embolization, is unknown. METHODS AND RESULTS We prospectively studied 56 patients with definite left-sided infective endocarditis. Patients were examined by a study neurologist, and those without contr...

The present study was designed to investigate the hypoglycemic and hypolipidemic activities of an ethanolic extract of Averrhoa bilimbi Linn. leaves (Oxalidaceae, Common name: Bilimbi) in streptozotocin (STZ)-diabetic rats. The optimal hypoglycemic dose (125 mg kg(-1)) was determined by performing the oral glucose tolerance test (OGTT) in both normal and STZ-diabetic rats. To investigate the ef...

We propose a new generic framework for achieving fully secure attribute based encryption (ABE) in prime-order bilinear groups. It is generic in the sense that it can be applied to ABE for arbitrary predicate. All previously available frameworks that are generic in this sense are given only in composite-order bilinear groups, of which operations are known to be much less efficient than in prime-...

As is known, attribute-based encryption (ABE) usually adopted for cloud storage, both its achievement of fine-grained access control over data, and guarantee data confidentiality. Nevertheless, single-authority (SA-ABE) has obvious drawback in that only one attribute authority can assign the users' attributes, enabling to be shared within management domain authority, while rendering multiple au...

Access control can selectively restrict access to sensitive information stored by third-party sites on the Internet. Attribute-based encryption (ABE) schemes can strengthen the effective combination of flexibility and operability of access control. They allow one sender to encrypt a message for more than one recipient, and to specify who should be able to decrypt, using attributes alone. Since ...

The alternative fuel butanol can be produced via acetone-butanol-ethanol (ABE) fermentation from renewable resources, i.e. biomass. Expensive feedstocks and the high costs for the separation of ABE from the dilute fermentation broth in the downstream processing have so far prohibited the industrial-scale production of bio-butanol. The low productivities and butanol yields of ABE batch fermentat...

Solventogenic Clostridium species are motile Gram positive anaerobic bacteria used for the fermentative production of acetone-butanol-ethanol (ABE). The addition of CaCO3 to semi-defined P2 medium was investigated to evaluate its impact on growth, amelioration of butanol toxicity, glucose utilization, and ABE production by solventogenic Clostridium species. Two Clostridium species commonly used...

Attribute-based encryption (ABE) is a public-key based one-to-many encryption that allows users to encrypt and decrypt data based on user attributes. A promising application of ABE is flexible access control of encrypted data stored in the cloud, using access polices and ascribed attributes associated with private keys and Ciphertexts. One of the main efficiency drawbacks of the existing ABE sc...

Ciphertext Policy Attribute Based Encryption (CP ABE) is a public key primitive in which a user is only able to decrypt a ciphertext if the attributes associated with secret key and the access policy connected with ciphertext matches. CP-ABE provides both confidentiality and access control to the data stored in public cloud. Anonymous CP-ABE is an adaptation of ABE where in addition to data con...