LFL-A New Stream Cipher for Secure Communications

Yerukala, Nagendar; Padmavathi, G.; Nalla, Venu; Prasad, V. Kamakshi

doi:10.1109/iccic.2018.8782345

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…In our study, we compared the secure MICKEY 2.0 cipher with the proposed MICKEY 2.0.85 cipher to ensure security. Another new design consisting of two nonlinear feedback shift registers with target implementation on small devices was found to have a good pseudo-randomness appearance based on the implementation of NIST statistical tests in cryptographic applications [25].…”

Section: Related Workmentioning

confidence: 99%

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MICKEY 2.0.85: A Secure and Lighter MICKEY 2.0 Cipher Variant with Improved Power Consumption for Smaller Devices in the IoT

Alamer

Soh

Brumbaugh³

2019

Symmetry

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Lightweight stream ciphers have attracted significant attention in the last two decades due to their security implementations in small devices with limited hardware. With low-power computation abilities, these devices consume less power, thus reducing costs. New directions in ultra-lightweight cryptosystem design include optimizing lightweight cryptosystems to work with a low number of gate equivalents (GEs); without affecting security, these designs consume less power via scaled-down versions of the Mutual Irregular Clocking KEYstream generator—version 2-(MICKEY 2.0) cipher. This study aims to obtain a scaled-down version of the MICKEY 2.0 cipher by modifying its internal state design via reducing shift registers and modifying the controlling bit positions to assure the ciphers’ pseudo-randomness. We measured these changes using the National Institutes of Standards and Testing (NIST) test suites, investigating the speed and power consumption of the proposed scaled-down version named MICKEY 2.0.85. The (85) refers to the new modified bit-lengths of each MICKEY 2.0 register. The results show that it is faster, requires less power, and needs fewer GEs. The proposed variant will enhance the security of applications, such asRadio-frequency identification (RFID) technology, sensor networks, and in Internet of things (IoT) in general. It also will enhance research on the optimization of existing lightweight cryptosystems.

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Section: Related Workmentioning

confidence: 99%

“…(The operations described above and depicted in Figures 2-4 make use of these data structures.) 1,3,4,5,6,9,12,13,16,19,20,21,22,25,28,37,38,41,42,45,46…”

Section: Internal State Driversmentioning

confidence: 99%

MICKEY 2.0.85: A Secure and Lighter MICKEY 2.0 Cipher Variant with Improved Power Consumption for Smaller Devices in the IoT

Alamer

Soh

Brumbaugh³

2019

Symmetry

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“…Survey related to stream ciphers used in wireless communications can be found in [28]. A new stream cipher design proposed in [29] which is based on combiner generator. A chaotic based stream cipher was presented in [30], in which session key changes dynamically.…”

Section: Two Basic Types Of Fcsrs Are Fibonacci and Galois Representamentioning

confidence: 99%

Alternating Step Generator Using FCSR and LFSRs: A New Stream Cipher

Yerukala¹,

Nalla²,

Padmavathi³

et al. 2019

IJIES

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Data encryption play major role in all communications via internet, wireless and wired media. Stream ciphers are used for data encryption due to their low error propagation. This paper presents a new design of stream cipher for generating pseudorandom keystream with two LFSR`s, one FCSR and a non-linear combiner function, which is a bit oriented based on alternating step generator (ASGF). In our design two LFSR`s are controlled by the FCSR . ASGF has two stages one is initialization and the other is key stream generation. We performed NIST test suite for checking randomness on the keystream of length 1500000 generated by our design with 99% confidence level. Keystream of ASGF passes almost all NIST tests for randomness and the results are tabulated. For fixed extreme patterns of key and IV, ASGF is giving random sequence. Throughput of our proposed stream cipher ASGF is 4364 cycles/byte. Throughput comparison of ASGF with existing stream ciphers A5/1, A5/2 and RC4 are presented. It is not possible to mount brute force attack on ASGF due to large key space 2 192 . Security analysis of ASGF against exhaustive search, Algebraic attack, distinguishing attack is also presented in this paper.

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“…To resist this attack and spoil the linearity properties of LFSRs, there are three basic schemes that can be achieved, which include: a nonlinear combining function on the outputs of several LFSRs, a nonlinear filtering function on the contents of a single LFSR, and using the output of one (or more) LFSRs to control the clock of one or more other LFSRs, which are the clock-controlled LFSRs. All of these schemes require a nonlinear function to combine the outputs of LFSRs or control the input clock for clock-controlled LFSRs [10][11][12][13][14]. The clock-controlled based stream cipher A5/1 uses the nonlinear majority function as the nonlinear function to promote its security.…”

Section: Introductionmentioning

confidence: 99%

A Key-Based Multi-Mode Clock-Controlled Stream Cipher for Real-Time Secure Communications of IoT

2023

Electronics

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With the rapid development of the Internet and wireless communications, as well as the popularization of personal communication systems, the security of real-time communications is demanded. The efficient technology of stream ciphers can satisfy this requirement of security. In this paper, to enhance the security strength of stream ciphers, we design a key-based multi-mode clock-controlled stream cipher for real-time secure communications of the Internet of things (IoT). The proposed stream cipher is equipped with a multi-mode depending on the key. The different working modes are shipped with different encrypting circuits depending on the user’s key. We analyze the period, the linear complexity, and use known attacks to verify the security strength of the proposed cipher. Compared with existing dual mode clock-controlled stream ciphers, the merits of our proposed cipher are its long period, high linear complexity, low hardware complex, low initialization clock, and simplicity in mode switching. Furthermore, the proposed cipher passes the FIPS PUB 140-1 and SP800-22 tests, obtaining at least 97.00%.

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LFL-A New Stream Cipher for Secure Communications

Cited by 3 publications

References 9 publications

MICKEY 2.0.85: A Secure and Lighter MICKEY 2.0 Cipher Variant with Improved Power Consumption for Smaller Devices in the IoT

MICKEY 2.0.85: A Secure and Lighter MICKEY 2.0 Cipher Variant with Improved Power Consumption for Smaller Devices in the IoT

Alternating Step Generator Using FCSR and LFSRs: A New Stream Cipher

A Key-Based Multi-Mode Clock-Controlled Stream Cipher for Real-Time Secure Communications of IoT

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