Mimic computing for password recovery

Li, Bin; Zhou, Qinglei; Si, Xueming

doi:10.1016/j.future.2018.02.018

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…To determine the appropriate threshold, we considered the password cracking speeds achievable by contemporary computers. In a recent study, [27] reported MD5 hash cracking speeds of up to 16 GH/s using their high-order reconfigurable processing unit. A benchmark test employing a rig of 8 nVidia GTX 1080 Ti GPUs achieved over 307 GH/s for MD5 hashed passwords [17].…”

Section: Methodsmentioning

confidence: 99%

Shoulder surfing: From an experimental study to a comparative framework

Bošnjak

Brumen

2019

International Journal of Human-Computer Studies

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Shoulder surfing is an attack vector widely recognized as a real threatenough to warrant researchers dedicating a considerable effort toward designing novel authentication methods to be shoulder surfing resistant. Despite a multitude of proposed solutions over the years, few have employed empirical evaluations and comparisons between different methods, and our understanding of the shoulder surfing phenomenon remains limited. Barring the challenges in experimental design, the reason for that can be primarily attributed to the lack of objective and comparable vulnerability measures. In this paper, we develop an ensemble of vulnerability metrics, a first endeavour toward a comprehensive assessment of a given method's susceptibility to observational attacks. In the largest on-site shoulder surfing experiment (n = 274) to date, we verify the model on four conceptually different authentication methods in two observation scenarios. On the example of a novel hybrid authentication method based on associations, we explore the effect of input type on the adversary's effectiveness. We provide first empirical evidence that graphical passwords are easier to observe; however, that does not necessarily mean that the observed information will allow the attacker to guess the victim's password easier. An in-depth analysis of individual metrics within the clusters offers insight into many additional aspects of the shoulder surfing attack not explored before. Our comparative framework makes an advancement in evaluation of shoulder surfing and furthers our understanding of observational attacks. The results have important implications for future shoulder surfing studies and the field of Password Security as a whole.

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Section: Methodsmentioning

confidence: 99%

Shoulder surfing: From an experimental study to a comparative framework

Bošnjak

Brumen

2019

International Journal of Human-Computer Studies

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“…Mimic computing breaks through the traditional concept of FPGA reconstruction and has been comprehensively expanded in the dimensions of reconstruction granularity, timing breadth, fitness depth, and initiative. Logic gates, logic blocks, IP cores, and components that have been extended to subsystems are all multidimensional reconstruction components [15]. HRCA, as the key technology of mimic computing, introduces the concept of computing granulation based on time and space, that is, the time space granularity (TSG) structure, as shown in Fig.1.…”

Section: Related Work a Hrca Overviewmentioning

confidence: 99%

Reconfigurable and High-Efficiency Password Recovery Algorithms Based on HRCA

Feng

Chen

et al. 2021

IEEE Access

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Cryptographic algorithms are widely used in information security fields such as network protocol authentication and commercial encryption software. Password recovery based on the hash algorithm is an important means of electronic forensics, encrypted information restoration, illegal information filtering, and network security maintenance. The traditional password recovery system is based mainly on the CPU and GPU and has a low energy efficiency ratio and cracking efficiency and cannot meet highperformance computing requirements. To further improve the computational efficiency and application flexibility of password recovery algorithms, this paper proposes a reconfigurable computing kernel design method based on a hybrid reconfigurable computing array (HRCA). Through in-depth analysis of the hash algorithm, the basic computing kernel set is extracted, and the combination design is carried out from the unit kernel, interconnection and storage structure to reconstruct the hash algorithm to match the application with the appropriate structure. Second, combined with the pipeline technology, the full pipeline hash and high-speed password attack algorithms are optimized and implemented to meet the needs of highperformance computing. Finally, an advanced computing kernel library is established, and the combination of a computing kernel map from the control and communication levels to achieve multidimensional reconfigurable computing and an overall placement strategy is used to make full use of the chip resources to improve computational efficiency. The experimental results and analysis show that compared with traditional CPU and GPU methods, the password recovery algorithm designed in this paper has the highest cracking speeds at 78.22 times and 2.65 times that of the CPU and GPU, respectively, and the highest energy efficiency ratio is 25.88 times and 3.16 times that of the CPU and GPU, respectively. Furthermore, the recovery efficiency has been significantly improved and meets the requirements of high-performance password recovery computing.

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“…Web Server [11] Router [12] Network Operating System [13] DNS [14] Password recovery [15] Industry Control System [16] As shown in Table 1, the mimic defense technology based on DHR architecture technology has been applied in many fields.…”

Section: Applicationsmentioning

confidence: 99%

Mimic Geographic Information System

2019

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With the development of the Internet, the geographic information system gets a chance to develop rapidly. Aiming at the security problems of existing geographic information systems, a Mimic Geographic Information System, i.e. M-GIS, based on mimic defense is proposed to improve the security of geographic information systems. The system consists of heterogeneous redundancy geographic information execution bodies pool, request distributor, scheduler and arbiter. Firstly, the scheduler dynamically selects the geographic information execution bodies set for processing, and then makes a mimic decision on the processing results. The experimental results show that the mimic system is more security than traditional system.

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Mimic computing for password recovery

Cited by 9 publications

References 31 publications

Shoulder surfing: From an experimental study to a comparative framework

Shoulder surfing: From an experimental study to a comparative framework

Reconfigurable and High-Efficiency Password Recovery Algorithms Based on HRCA

Mimic Geographic Information System

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