Long Term Evolution (LTE) is the first technology that provides exclusively packet-switched data and modifies the security architecture of the 2G (Second Generation) and 3G systems. The LTE security architecture offers confidentiality, access control, a kind of obscurity and mutual authentication. However, numerous types of attacks can be encountered during the mutual authentication process which ...

In this paper, the authors proposed a new asymmetric group key agreement protocol allowing a set of users to negotiate a common encryption key accessible by any users and each user holds their respective decryption key. This enables the confidential message communication among group users and grants any outsider to send message to the group. ...

In this paper, the authors propose an efficient and simpler Contributory Group Key Agreement protocol (CGKA) based on Elliptic Curve Diffie Hellman (ECDH). In this CGKA protocol, a member acts as a Group Controller (GC) and forms two-party groups with remaining group members and generates an ECDH style shared key per each two-party group. It ...

In this paper, the authors have proposed a novel algorithm and data structures to improve the speed of firewall policy verification. It is called the Policy MAPping (PMAP). Time complexity of the proposed technique is O (1) to verify incoming-outgoing packets against the firewall policy. Be-sides, the algorithm is not limited to handle IP network ...

Authentication and key agreement protocol is indispensable-able for today network applications. Many two-factor authentication and key agreement protocols using smart card and password have been proposed over the last decade. However, many of these schemes are vulnerable to password guessing attack due to low-entropy passwords. In this paper, the authors show how to mount an ...

Although SQLIA (SQL Injection Attack) made its first public appearance back in, it still stays one of most serious and prevalent threat types. When used properly, attackers can influence what is passed to the database by exploiting weak input validation and/or dynamic construction of SQL statements having no proper usage of type-safe parameter values. This ...

Most of the privacy-protection schemes adopting chaotic maps are usually by symmetric cryptography for guaranteeing identity hiding. This will lead to a high calculated amount. So, the paper will wipe out the symmetric cryptography and only use chaotic maps, a secure one-way hash function to construct a provable Privacy-Protection System (PPS) which can achieve two ...

As cloud computing is increasingly expanding its application scenario, it is vital for cloud storage customers not to sacrifice the confidentiality of sensitive data while making fullest use of operational functionality of cloud secure systems. Although traditional searchable encryption can well solve exact keyword search on encrypted data with retrieving les by search interest, it ...

In global mobile network, it is required to authenticate mobile users, provide secure communication channel between a user and a foreign agent using session key and guarantee users’ anonymity and untraceability. In order to improve the security of mobile roaming service, two-factor authentication which employs smart card and pass-word was introduced to global mobile network. ...

A Wi-Fi has been able to accomplish great transmission due to its co-transfer mode. Each wireless network node has to rely on the way to achieve its mission of information transmission. In unattended sensing network environment, the relay process of how to select an appropriate relay node can adjust power consumption and communication quality, so ...