Inam Satti

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David Seamon

Kansas State University

Fatiha Djemili Tolba

Badji Mokhtar - Annaba University

Jaydip Sen

Praxis Business School

Nurfadhlina Mohd Sharef

UPM - Universiti Putra Malaysia

Viacheslav Kuleshov

Stockholm University

Ferruh Ağca

Eskisehir Osmangazi University, Turkey

Ashok Paranjothi

Sri Sairam Institute Of Technology

Dr. Roxana Rata (Panait)

CERN

Olayemi M Olaniyi

National Open University of Nigeria

Lyudmila S Mihaylova

The University of Sheffield

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Papers by Inam Satti

Authenticated mode of Trivium

2016 13th International Bhurban Conference on Applied Sciences and Technology (IBCAST), 2016

Trivium is one of the finalists of the eSTREAM project in hardware category. It is well known for... more Trivium is one of the finalists of the eSTREAM project in hardware category. It is well known for its performance and security. A number of attacks have been published against the reduced versions of Trivium but the original Trivium is still unbroken. It is best suited for resource-constraint environments like RFID and wireless sensor networks. There is a need to introduce the authenticated mode of Trivium because without authentication, the confidentiality service is not enough for the security of the cryptosystem. In this research, the authentication mechanism of Grain-128a has been extended and implemented for Trivium. ETM approach has been followed instead of Grain-128a's MAE. A comparative analysis has also been performed for all of the three approaches MTE, ETM and MAE. Indirect message injection technique has been used in the authentication mechanism. Single key mechanism has been used for both encryption and authentication. Software as well as micro-controller implementations are carried out and performance analysis has been performed. Finally, the throughput rate has been calculated for the authenticated mode of Trivium and compared against the normal mode.

Cube attack on Trivium and A5/1 stream ciphers

2016 13th International Bhurban Conference on Applied Sciences and Technology (IBCAST), 2016

Cube attack has been proposed by Dinur and Shamir in 2009. It is an addition in the area of crypt... more Cube attack has been proposed by Dinur and Shamir in 2009. It is an addition in the area of cryptanalysis applicable to a wide range of symmetric key algorithms. Cryptographic schemes may be represented by tweakable polynomials in GF(2) in terms of secret and public variables. Cube attack is a major improvement over existing techniques used for solving such polynomial equations. In this research, stream ciphers Trivium and A5/1 have been analyzed against the cube attack. 69 out of 80 key bits for 576 round Trivium have been successfully recovered with a complexity of 212, 63 cipher evaluations. 20 linearly independent relations have been found for 5 round A5/1 with the attack complexity of 244 cipher iterations. Cube attack software toolkit from our previous research has been utilized for cube cryptanalysis.

Secure end-to-end SMS communication over GSM networks

2015 12th International Bhurban Conference on Applied Sciences and Technology (IBCAST), 2015

In this project, the data can be transmitted to and received from remote place using GSM communic... more In this project, the data can be transmitted to and received from remote place using GSM communication device. Data Security is primary concern for every communication system. There are many ways to provide security data that is being communicated. However, what if the security is assured irrespective of the hackers are from the noise. This Project describes a design of effective security for data communication by designing standard algorithm for encryption and decryption.

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Secure End-to-End SMS Communication over GSM Networks

—In today's GSM networks, the security provided by the network operators is limited to the wirele... more —In today's GSM networks, the security provided by the network operators is limited to the wireless links only. The information traveling over the wired links is insecure and weak encryption algorithms are used, therefore end-to-end security does not exist. The attacker is able to capture the traffic over the wireless link and decrypt it using specialized hardware. Short Message Service (SMS) is used widely all over the world which may contain sensitive and confidential information like banking systems. SMS spoofing applications are widely available through which any sender ID can be set. The objectives of this research includes, to provide end-to-end confidentiality, integrity and non-repudiation of SMS. The proposed scheme uses symmetric key and identity based techniques for encryption and key management. The overhead involved due to addition of control information may increase the message length but the computational delay due to cryptographic operation on the device is negligible on 1GHz+ processors. With the proposed scheme, any leakage either on the wireless or wired link will not result in any disclosure of the information or compromise of integrity.

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Cube Attack on Trivium and A5/1 Stream Ciphers

Cube attack has been proposed by . It is an addition in the area of cryptanalysis applicable to a... more Cube attack has been proposed by . It is an addition in the area of cryptanalysis applicable to a wide range of symmetric key algorithms. Cryptographic schemes may be represented by tweakable polynomials in GF (2) in terms of secret and public variables. Cube attack is a major improvement over existing techniques used for solving such polynomial equations. In this research, stream ciphers Trivium and A5/1 have been analyzed against the cube attack. 69 out of 80 key bits for 576 round Trivium have been successfully recovered with a complexity of 2 12.63 cipher evaluations. 20 linearly independent relations have been found for 5 round A5/1 with the attack complexity of 2 44 cipher iterations. Cube attack software toolkit from our previous research has been utilized for cube cryptanalysis.

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Authenticated Mode of Trivium

—Trivium is one of the finalists of the eSTREAM project in hardware category. It is well known fo... more —Trivium is one of the finalists of the eSTREAM project in hardware category. It is well known for its performance and security. A number of attacks have been published against the reduced versions of Trivium but the original Trivium is still unbroken. It is best suited for resource-constraint environments like RFID and wireless sensor networks. There is a need to introduce the authenticated mode of Trivium because without authentication, the confidentiality service is not enough for the security of the cryptosystem. In this research, the authentication mechanism of Grain-128a has been extended and implemented for Trivium. ETM approach has been followed instead of Grain-128a's MAE. A comparative analysis has also been performed for all of the three approaches MTE, ETM and MAE. Indirect message injection technique has been used in the authentication mechanism. Single key mechanism has been used for both en-cryption and authentication. Software as well as micro-controller implementations are carried out and performance analysis has been performed. Finally, the throughput rate has been calculated for the authenticated mode of Trivium and compared against the normal mode.

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Authenticated mode of Trivium

2016 13th International Bhurban Conference on Applied Sciences and Technology (IBCAST), 2016