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Femtosecond laser subtractive/additive-integrated biomimetic manufacturing for visible/infrared encryption and stimuli-responsive infrared decryption 认领 引用 被引量：7
1
作者 Ruijie Liu Dongshi Zhang Zhuguo Li 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2025年第4期387-404,共18页
Black wings of butterfly Ornithoptera goliath and infrared-band radiative cooling function of Rapala dioetas butterfly wings are associated with black pigment(e.g.,melanin)and unique hierarchical microanostructures,gr... Black wings of butterfly Ornithoptera goliath and infrared-band radiative cooling function of Rapala dioetas butterfly wings are associated with black pigment(e.g.,melanin)and unique hierarchical microanostructures,greatly stimulating biomimetic fabrication of functional photonic structures but mainly targeted to one prototype.Targeted at two-prototype integrated biomimetic fabrication from fully compositional/structural/functional aspects,femtosecond(fs)laser subtractive/additive-integrated hierarchical microano-manufacturing technique is proposed in this work.This technique can one-step transfer refractory metals(e.g.,W,Mo,Nb,Ta)into black non-stoichiometric oxide nanomaterials with abundant oxygen vacancies and simultaneously enable the realization of in situ quasi-controllable microanoscale hierarchical aggregation and assembly,all displaying black color but with tunable infrared emission.Adjusting the scan interval for biomimetic manufacturing can tailor the structural oxidation degree,the emission in the long-wave infrared(LWIR)band while keeping the blackness of hierarchical aggregates,and the confined height between the covering quartz plate and the ablated sample.The blackening efficiency of this technique can reach∼11.25 cm2·min−1,opening opportunities for high-throughput opticalhermal applications.Selectively patterned Chinese characters,Arabic numbers,and English letters are easily fabricable,which are intrinsically invisible-infrared dual-band encrypted but decryptable via static/dynamic environment stimuli(e.g.,sample heating/cooling,introducing external hot/cold sources including human hands).The self-evolution from‘orderless’structuring to‘ordered’functionalization is validated for the proposed fs laser subtractive/additive-integrated biomimetic manufacturing,specifically from the synthesis of diverse black nanomaterials and the seemingly disordered microano-aggregates to the ordered opticalhermal regulation capacities for a delicate modulation of information encryption and decryption,unveiling a new concept for future exploration and extension. 展开更多
关键词 femtosecond laser biomimetic manufacturing black particle aggregates subtractive/additive-integrated manufacturing intrinsic visible-infrared encryption stimuli responsive decrypted IR display
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Non-Fragile Filtering for Discrete-Time Networked Systems Subject to Fading Measurements:An Encryption and Decryption Scheme 认领 引用
2
作者 Jinliang Liu Jiahui Tang +1 位作者 Lijuan Zha Engang Tian 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2025年第12期2618-2620,共3页
Dear Editor,This letter deals with the non-fragile filtering problem for the discrete-time networked system subject to fading measurements and potential risk of information leakage. To ensure the system security enhan... Dear Editor,This letter deals with the non-fragile filtering problem for the discrete-time networked system subject to fading measurements and potential risk of information leakage. To ensure the system security enhancement,an encryption-decryption scheme is employed to protect the privacy of the transmitted signal via network,under which the real transmitted data is invisible to eavesdroppers. Ultimately,a numerical example is provided to assess the accuracy and efficacy of the derived approaches. 展开更多
关键词 discrete time networked systems information leakage decryption non fragile filtering numerical example fading measurements system security enhancementan encryption
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A Recursive Method to Encryption-Decryption-Based Distributed Set-Membership Filtering for Time-Varying Saturated Systems Over Sensor Networks 认领 引用
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作者 Jun Hu Jiaxing Li +2 位作者 Chaoqing Jia Xiaojian Yi Hongjian Liu 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2025年第5期1047-1049,共3页
Dear Editor,This letter deals with the distributed recursive set-membership filtering(DRSMF)issue for state-saturated systems under encryption-decryption mechanism.To guarantee the data security,the encryption-decrypt... Dear Editor,This letter deals with the distributed recursive set-membership filtering(DRSMF)issue for state-saturated systems under encryption-decryption mechanism.To guarantee the data security,the encryption-decryption mechanism is considered in the signal transmission process.Specifically,a novel DRSMF scheme is developed such that,for both state saturation and encryption-decryption mechanism,the filtering error(FE)is limited to the ellipsoid domain.Then,the filtering error constraint matrix(FECM)is computed and a desirable filter gain is derived by minimizing the FECM.Besides,the bound-edness evaluation of the FECM is provided. 展开更多
关键词 time varying saturated systems signal transmission processspecificallya encryption decryption mechanism sensor networks recursive method distributed set membership filtering
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A Brief Discussion on Data Encryption and Decryption Technology and Its Applications 认领 引用
4
作者 Zhihong Jin 《Journal of Electronic Research and Application》 2025年第2期159-165,共7页
With the rapid development of information technology,data security issues have received increasing attention.Data encryption and decryption technology,as a key means of ensuring data security,plays an important role i... With the rapid development of information technology,data security issues have received increasing attention.Data encryption and decryption technology,as a key means of ensuring data security,plays an important role in multiple fields such as communication security,data storage,and data recovery.This article explores the fundamental principles and interrelationships of data encryption and decryption,examines the strengths,weaknesses,and applicability of symmetric,asymmetric,and hybrid encryption algorithms,and introduces key application scenarios for data encryption and decryption technology.It examines the challenges and corresponding countermeasures related to encryption algorithm security,key management,and encryption-decryption performance.Finally,it analyzes the development trends and future prospects of data encryption and decryption technology.This article provides a systematic understanding of data encryption and decryption techniques,which has good reference value for software designers. 展开更多
关键词 Data encryption Data decryption Communication security Data storage encryption Key management
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Secure IoT Data Transmission Using MPEG Derived Motion Vectors and Dual Encryption Techniques 认领 引用
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作者 Sara H.Elsayed Rodaina Abdelsalam +2 位作者 Mahmoud A.Ismail Shoman Raed Alotaibi Omar Reyad 《Computers, Materials & Continua》 SCIE EI 2026年第7期562-581,共20页
In today’s digitally connected world,where cyber threats are becoming increasingly complex,finding modern and secure text encryption solutions that maintain maximum runtime performance while offering high-level prote... In today’s digitally connected world,where cyber threats are becoming increasingly complex,finding modern and secure text encryption solutions that maintain maximum runtime performance while offering high-level protection is more crucial.The deployment of sophisticated security paradigms is often accompanied by a significant escalation in computational overhead.Thus,the fundamental objective resides in the mitigation of computational overhead while maintaining an uncompromising security posture.Internet of Things(IoT)devices require strong security measures for data transmission.Also,protecting communication channels against illegal access and eavesdropping has become crucial due to the exponential expansion of the IoT.The IoT implementations frequently have weak,unencrypted data streams that are susceptible to manipulation and interception.In order to overcome this,the proposed work incorporates lightweight protection using Moving Picture Experts Group(MPEG)derived motion vectors and dual encryption techniques to guarantee message confidentiality and integrity via limited IoT networks.The proposed method starts with resizing MPEG video frames to dimensions[1080,1920].After extracting motion vectors from two successive video frames,scale the obtained vectors to 1000.The exclusive OR(XOR)procedure is applied to the combined motion vectors.A one-dimensional(1D)vector is then produced.The initial elliptic curve Diffie-Hellman(ECDH)private key is created using a mapping of a hash function.The public keys,shared secret keys,and a second private key are also created.The shared secret key is used to generate the Advanced Encryption Standard(AES)main key.After that,the created AES is used to encrypt and decrypt text messages ranging in length from 10 to 300 bytes.Several evaluation metrics,including mean square error(MSE),peak signal to noise ratio(PSNR),correlation coefficient(CC),avalanche Effect(AE),and compression ratio(CR)values,are evaluated between the original and ciphertext.The presented method has demonstrated optimal performance in terms of encryption and decryption times as well as public and private key generation.Thus,improving the IoT application’s overall security condition by guaranteeing that only authorized endpoints can decrypt and read the data,and showing minimal latency overhead as compared to insecure transmission.This suggests that it is a highly effective solution for secure text communication,offering lightweight encryption suitable for a wide range of resource-constrained and real-time applications. 展开更多
关键词 MPEG motion vectors encryption decryption IoT ECDH AES MES PSNR CC AE CR
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Femtosecond laser maskless direct writing of dual-band crosstalkfree information for all-in-one high-security encryption metasurface 认领 引用
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作者 Hanmian Jiang Zhuguo Li Dongshi Zhang 《Opto-Electronic Advances》 SCIE EI CAS CSCD 2026年第4期59-74,共16页
Metasurface fabrication still faces critical processing challenges in balancing the structural order and disorder, achieving high-speed patterning, and extending material compatibility to refractory metals for operati... Metasurface fabrication still faces critical processing challenges in balancing the structural order and disorder, achieving high-speed patterning, and extending material compatibility to refractory metals for operation under extreme conditions. This study demonstrates that femtosecond laser maskless direct writing(fs-LMDW) offers a versatile platform for engineering multispectral information, all-in-one metasurfaces on pure zirconium(Zr)substrates. Through sequential fs-LMDW in air and ethylene glycol(EG), deceptive grey-colored visible information is superimposedly encoded with the infrared(IR)-encrypted information(invisible among black-color structured background), which leverages the crosstalk-free structural modulation of singular-band IR and visible light. The metasurface exhibits robust thermal stability and high-security encryption capability across a wide temperature range, with IR-concealed information(such as QR code) remaining securely encrypted until thermally activated at 300℃ for smartphone-readable information decryption. Furthermore, the visible information is both erasable through 300℃ oxidation heating in air and rewritable via fs-LMDW in EG without compromising IR encryption security. Particularly,the one-time complete erasability makes it possible to identify whether the encrypted IR-information has been decrypted, underscoring the robustness and high security of the platform. The presented hierarchical microanostructuring methodology is deemed to be applicable to a large material matrix to gain high-security, and multifunctional metasurfaces that are more difficult and complex for current metasurface fabrication techniques. 展开更多
关键词 all-in-one metasurface femtosecond laser maskless direct writing high-security encryption temperaturecontrolled decryption erasability and rewritability
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Encryption and Decryption of Color Images through Random Disruption of Rows and Columns 认领 引用
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作者 ZENG Jianhua ZHAN Yanlin YANG Jianrong 《Journal of Donghua University(English Edition)》 CAS 2020年第3期245-255,共11页
In modern society,information is becoming increasingly interconnected through networks,and the rapid development of information technology has caused people to pay more attention to the encryption and the protection o... In modern society,information is becoming increasingly interconnected through networks,and the rapid development of information technology has caused people to pay more attention to the encryption and the protection of information.Image encryption technology is a key technology for ensuring the security performance of images.We extracted single channel RGB component images from a color image using MATLAB programs,encrypted and decrypted the color images by randomly disrupting rows,columns and regions of the image.Combined with histograms and the visual judgments of encryption images,it is shown that the information of the original image cannot be obtained from the encryption image easily.The results show that the color-image encryptions with the algorithm we used have good effect and fast operation speed.Thus this algorithm has certain practical value. 展开更多
关键词 color image encryption decryption single channel RGB component image disrupting
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Image Encryption and Decryption Based on Chaotic Algorithm 认领 引用
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作者 Yue Hu Ruyue Tian 《Journal of Applied Mathematics and Physics》 2020年第9期1814-1825,共12页
This paper analyzes the problems in image encryption and decryption based on chaos theory. This article introduces the application of the two-stage Logistic algorithm in image encryption and decryption, then by inform... This paper analyzes the problems in image encryption and decryption based on chaos theory. This article introduces the application of the two-stage Logistic algorithm in image encryption and decryption, then by information entropy analysis it is concluded that the security of this algorithm is higher compared with the original image;And a new image encryption and decryption algorithm based on the combination of two-stage Logistic mapping and M sequence is proposed. This new algorithm is very sensitive to keys;the key space is large and its security is higher than two-stage Logistic mapping of image encryption and decryption technology. 展开更多
关键词 Chaos Algorithm Image Encryption and Decryption Two-Stage Logistic Mapping M Sequence
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Adaptive Attribute-Based Honey Encryption: A Novel Solution for Cloud Data Security 认领 引用 被引量：1
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作者 Reshma Siyal Muhammad Asim +4 位作者 Long Jun Mohammed Elaffendi Sundas Iftikhar Rana Alnashwan Samia Allaoua Chelloug 《Computers, Materials & Continua》 SCIE EI 2025年第2期2637-2664,共28页
A basic procedure for transforming readable data into encoded forms is encryption, which ensures security when the right decryption keys are used. Hadoop is susceptible to possible cyber-attacks because it lacks built... A basic procedure for transforming readable data into encoded forms is encryption, which ensures security when the right decryption keys are used. Hadoop is susceptible to possible cyber-attacks because it lacks built-in security measures, even though it can effectively handle and store enormous datasets using the Hadoop Distributed File System (HDFS). The increasing number of data breaches emphasizes how urgently creative encryption techniques are needed in cloud-based big data settings. This paper presents Adaptive Attribute-Based Honey Encryption (AABHE), a state-of-the-art technique that combines honey encryption with Ciphertext-Policy Attribute-Based Encryption (CP-ABE) to provide improved data security. Even if intercepted, AABHE makes sure that sensitive data cannot be accessed by unauthorized parties. With a focus on protecting huge files in HDFS, the suggested approach achieves 98% security robustness and 95% encryption efficiency, outperforming other encryption methods including Ciphertext-Policy Attribute-Based Encryption (CP-ABE), Key-Policy Attribute-Based Encryption (KB-ABE), and Advanced Encryption Standard combined with Attribute-Based Encryption (AES+ABE). By fixing Hadoop’s security flaws, AABHE fortifies its protections against data breaches and enhances Hadoop’s dependability as a platform for processing and storing massive amounts of data. 展开更多
关键词 Cybersecurity data security cloud storage hadoop encryption and decryption privacy protection attribute-based honey encryption
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Substring-searchable attribute-based encryption and its application for IoT devices 认领 引用 被引量：3
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作者 Xi Sun Hao Wang +4 位作者 Xiu Fu Hong Qin Mei Jiang Likun Xue Xiaochao Wei 《Digital Communications and Networks》 SCIE EI CSCD 2021年第2期277-283,共7页
With the development of big data and cloud computing technology,more and more users choose to store data on cloud servers,which brings much convenience to their management and use of data,and also the risk of data lea... With the development of big data and cloud computing technology,more and more users choose to store data on cloud servers,which brings much convenience to their management and use of data,and also the risk of data leakage.A common method to prevent data leakage is to encrypt the data before uploading it,but the traditional encryption method is often not conducive to data sharing and querying.In this paper,a new kind of Attribute-Based Encryption(ABE)scheme,which is called the Sub-String Searchable ABE(SSS-ABE)scheme,is proposed for the sharing and querying of the encrypted data.In the SSS-ABE scheme,the data owner encrypts the data under an access structure,and only the data user who satisfies the access structure can query and decrypt it.The data user can make a substring query on the whole ciphertext without setting keywords in advance.In addition,the outsourcing method is also introduced to reduce the local computation of the decryption process so that the outsourcing SSS-ABE scheme can be applied to IoT devices. 展开更多
关键词 Attribute-based encryption Searchable encryption Outsourcing decryption IoT divices
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Digital image encryption with chaotic map lattices 认领 引用 被引量：9
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作者 孙福艳 吕宗旺 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第4期132-138,共7页
This paper proposes a secure approach for encryption and decryption of digital images with chaotic map lattices. In the proposed encryption process, eight different types of operations are used to encrypt the pixels o... This paper proposes a secure approach for encryption and decryption of digital images with chaotic map lattices. In the proposed encryption process, eight different types of operations are used to encrypt the pixels of an image and one of them will be used for particular pixels decided by the outcome of the chaotic map lattices. To make the cipher more robust against any attacks, the secret key is modified after encrypting each block of sixteen pixels of the image. The experimental results and security analysis show that the proposed image encryption scheme achieves high security and efficiency. 展开更多
关键词 image encryption image decryption chaotic map lattice cryptography spatiotemporal chaotic system
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FPGA implementation and image encryption application of a new PRNG based on a memristive Hopfield neural network with a special activation gradient 认领 引用 被引量：1
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作者 Fei Yu Zinan Zhang +3 位作者 Hui Shen Yuanyuan Huang Shuo Cai Sichun Du 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第2期109-118,共10页
A memristive Hopfield neural network(MHNN)with a special activation gradient is proposed by adding a suitable memristor to the Hopfield neural network(HNN)with a special activation gradient.The MHNN is simulated and d... A memristive Hopfield neural network(MHNN)with a special activation gradient is proposed by adding a suitable memristor to the Hopfield neural network(HNN)with a special activation gradient.The MHNN is simulated and dynamically analyzed,and implemented on FPGA.Then,a new pseudo-random number generator(PRNG)based on MHNN is proposed.The post-processing unit of the PRNG is composed of nonlinear post-processor and XOR calculator,which effectively ensures the randomness of PRNG.The experiments in this paper comply with the IEEE 754-1985 high precision32-bit floating point standard and are done on the Vivado design tool using a Xilinx XC7 Z020 CLG400-2 FPGA chip and the Verilog-HDL hardware programming language.The random sequence generated by the PRNG proposed in this paper has passed the NIST SP800-22 test suite and security analysis,proving its randomness and high performance.Finally,an image encryption system based on PRNG is proposed and implemented on FPGA,which proves the value of the image encryption system in the field of data encryption connected to the Internet of Things(Io T). 展开更多
关键词 memristive Hopfield neural network(MHNN) pseudo-random number generator(PRNG) FPGA image encryption decryption system
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Decryption of pure-position permutation algorithms 认领 引用 被引量：3
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作者 赵晓宇 陈刚 +2 位作者 张亶 王肖虹 董光昌 《Journal of Zhejiang University Science》 2004年第7期803-809,共7页
Pure position permutation image encryption algorithms, commonly used as image encryption investigated in this work are unfortunately frail under known-text attack. In view of the weakness of pure position permutation ... Pure position permutation image encryption algorithms, commonly used as image encryption investigated in this work are unfortunately frail under known-text attack. In view of the weakness of pure position permutation algorithm,we put forward an effective decryption algorithm for all pure-position permutation algorithms. First, a summary of the pure position permutation image encryption algorithms is given by introducing the concept of ergodic matrices. Then, by using probability theory and algebraic principles, the decryption probability of pure-position permutation algorithms is verified theoretically; and then, by defining the operation system of fuzzy ergodic matrices, we improve a specific decryption al-gorithm. Finally, some simulation results are shown. 展开更多
关键词 Decryption Image encryption Fuzzy Position permutation
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ID-Based Threshold Decryption Secure Against Chosen Plaintext Attack 认领 引用
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作者 龙宇 陈克非 刘胜利 《Journal of Shanghai Jiaotong university(Science)》 EI 2006年第2期127-133,共7页
B.Libert and J.Quisquater proposed an identity(ID)-based threshold decryption scheme. This paper found flaw in their security reduction and presented two methods to prove this scheme is resist against chosen-plaintext... B.Libert and J.Quisquater proposed an identity(ID)-based threshold decryption scheme. This paper found flaw in their security reduction and presented two methods to prove this scheme is resist against chosen-plaintext attack(CPA), based on the weaker model of security known as selective ID-based threshold CPA and the common model known as ID-based threshold CPA respectively. 展开更多
关键词 threshold decryption identity-based cryptology publicly checkable encryption
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Simple optical decryption based on a modified joint transform correlator technique 认领 引用
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作者 王怀彬 王天佐 袁晓聪 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2006年第2期203-205,共3页
A new encryption/decryption system for optical information security is proposed in this paper. We used an iterative Fourier transform algorithm to optimize the encrypted hologram as well as the decryption key as phase... A new encryption/decryption system for optical information security is proposed in this paper. We used an iterative Fourier transform algorithm to optimize the encrypted hologram as well as the decryption key as phase-only elements. The optical decryption was implemented by superimposing the encrypted hologram and the decryyption key in a simple optical setup. Numerical simulation and optical experiment have confirmed the proposed technique as a simple and easy implementation for optical decryption, demonstrating potential applications in optical information security verification. 展开更多
关键词 computer generated holograms correlator encryption/decryption
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A Novel Image Encryption Technique Based on Inter Block Difference 认领 引用 被引量：1
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作者 THAMANAM Srinivasa Rao Potti Nagaraja +1 位作者 B.Balaji Naik K.Manjunathachari 《Journal of Shanghai Jiaotong university(Science)》 EI 2021年第4期488-493,共6页
Data security plays a vital role in the current scenario due to the advanced and sophisticated data access techniques. Present development in data access is always a threat to data that are stored in electronic device... Data security plays a vital role in the current scenario due to the advanced and sophisticated data access techniques. Present development in data access is always a threat to data that are stored in electronic devices. Among all the forms of data, image is an important aspect that still needs methodologies to be stored securely. This work focuses on a novel technique to secure images using inter block difference and advanced encryption standard (AES). The AES algorithm is chosen for encryption since there is no prevalent attack that is successful in analyzing it. Instead of encrypting the entire image, only a part of the image is encrypted. The proposed work is found to reduce the encryption overhead in a significant way and at the same time preserves the safety of the image. It is also observed that the decryption is done in an efficient and time preserving manner. 展开更多
关键词 encryption decryption inter block difference advanced encryption standard(AES)
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Secured Access Policy in Ciphertext-Policy Attribute-Based Encryption for Cloud Environment 认领 引用 被引量：1
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作者 P.Prathap Nayudu Krovi Raja Sekhar 《Computer Systems Science & Engineering》 SCIE EI 2023年第7期1079-1092,共14页
The cloud allows clients to store and share data.Depending on the user’s needs,it is imperative to design an effective access control plan to share the information only with approved users.The user loses control of t... The cloud allows clients to store and share data.Depending on the user’s needs,it is imperative to design an effective access control plan to share the information only with approved users.The user loses control of their data when the data is outsourced to the cloud.Therefore,access control mechanisms will become a significant challenging problem.The Ciphertext-Policy Attribute-Based Encryption(CP-ABE)is an essential solution in which the user can control data access.CP-ABE encrypts the data under a limited access policy after the user sets some access policies.The user can decrypt the data if they satisfy the limited access policy.Although CP-ABE is an effective access control program,the privacy of the policy might be compromised by the attackers.Namely,the attackers can gather important information from plain text policy.To address this issue,the SHA-512 algorithm is presented to create a hash code for the user’s attributes in this paper.Depending on the created hash codes,an access policy will be formed.It leads to protecting the access policy against attacks.The effectiveness of the proposed scheme is assessed based on decryption time,private key generation time,ciphertext generation time,and data verification time. 展开更多
关键词 Cloud computing access policy CP-ABE hash code SHA-512 attribute ciphertext encryption decryption
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Multivariate Broadcast Encryption with Group Key Algorithm for Secured IoT 认领 引用 被引量：1
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作者 M.Suresh Kumar T.Purosothaman 《Computer Systems Science & Engineering》 SCIE EI 2023年第4期925-938,共14页
The expanding and ubiquitous availability of the Internet of Things(IoT)have changed everyone’s life easier and more convenient.Same time it also offers a number of issues,such as effectiveness,security,and excessive... The expanding and ubiquitous availability of the Internet of Things(IoT)have changed everyone’s life easier and more convenient.Same time it also offers a number of issues,such as effectiveness,security,and excessive power consumption,which constitute a danger to intelligent IoT-based apps.Group managing is primarily used for transmitting and multi-pathing communications that are secured with a general group key and it can only be decrypted by an authorized group member.A centralized trustworthy system,which is in charge of key distribution and upgrades,is used to maintain group keys.To provide longitudinal access controls,Software Defined Network(SDN)based security controllers are employed for group administration services.Cloud service providers provide a variety of security features.There are just a few software security answers available.In the proposed system,a hybrid protocols were used in SDN and it embeds edge system to improve the security in the group communication.Tree-based algorithms compared with Group Key Establishment(GKE)and Multivariate public key cryptosystem with Broadcast Encryption in the proposed system.When all factors are considered,Broadcast Encryption(BE)appears to become the most logical solution to the issue.BE enables an initiator to send encrypted messages to a large set of recipients in a efficient and productive way,meanwhile assuring that the data can only be decrypted by defining characteristic.The proposed method improves the security,efficiency of the system and reduces the power consumption and minimizes the cost. 展开更多
关键词 Internet of things encryption decryption group key software defined network public key security
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Encryption Algorithm for Securing Non-Disclosure Agreements in Outsourcing Offshore Software Maintenance 认领 引用
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作者 Atif Ikram Masita Abdul Jalil +6 位作者 Amir Bin Ngah Nadeem Iqbal Nazri Kama Azri Azmi Ahmad Salman Khan Yasir Mahmood Assad Alzayed 《Computers, Materials & Continua》 SCIE EI 2022年第11期3827-3845,共19页
Properly created and securely communicated,non-disclosure agreement(NDA)can resolve most of the common disputes related to outsourcing of offshore software maintenance(OSMO).Occasionally,these NDAs are in the form of ... Properly created and securely communicated,non-disclosure agreement(NDA)can resolve most of the common disputes related to outsourcing of offshore software maintenance(OSMO).Occasionally,these NDAs are in the form of images.Since the work is done offshore,these agreements or images must be shared through the Internet or stored over the cloud.The breach of privacy,on the other hand,is a potential threat for the image owners as both the Internet and cloud servers are not void of danger.This article proposes a novel algorithm for securing the NDAs in the form of images.As an agreement is signed between the two parties,it will be encrypted before sending to the cloud server or travelling through the public network,the Internet.As the image is input to the algorithm,its pixels would be scrambled through the set of randomly generated rectangles for an arbitrary amount of time.The confusion effects have been realized through an XOR operation between the confused image,and chaotic data.Besides,5D multi-wing hyperchaotic system has been employed to spawn the chaotic vectors due to good properties of chaoticity it has.The machine experimentation and the security analysis through a comprehensive set of validation metric vividly demonstrate the robustness,defiance to the multifarious threats and the prospects for some real-world application of the proposed encryption algorithm for the NDA images. 展开更多
关键词 Non-disclosure agreement encryption decryption secret key chaoticmap confusion diffusion
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An Efficient Technique to Prevent Data Misuse with Matrix Cipher Encryption Algorithms 认领 引用
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作者 Muhammad Nadeem Ali Arshad +4 位作者 Saman Riaz Syeda Wajiha Zahra Ashit Kumar Dutta Moteeb Al Moteri Sultan Almotairi 《Computers, Materials & Continua》 SCIE EI 2023年第2期4059-4079,共21页
Many symmetric and asymmetric encryption algorithms have been developed in cloud computing to transmit data in a secure form.Cloud cryptography is a data encryption mechanism that consists of different steps and preve... Many symmetric and asymmetric encryption algorithms have been developed in cloud computing to transmit data in a secure form.Cloud cryptography is a data encryption mechanism that consists of different steps and prevents the attacker from misusing the data.This paper has developed an efficient algorithm to protect the data from invaders and secure the data from misuse.If this algorithm is applied to the cloud network,the attacker will not be able to access the data.To encrypt the data,the values of the bytes have been obtained by converting the plain text to ASCII.A key has been generated using the Non-Deterministic Bit Generator(NRBG)mechanism,and the key is XNORed with plain text bits,and then Bit toggling has been implemented.After that,an efficient matrix cipher encryption algorithm has been developed,and this algorithm has been applied to this text.The capability of this algorithm is that with its help,a key has been obtained from the plain text,and only by using this key can the data be decrypted in the first steps.A plain text key will never be used for another plain text.The data has been secured by implementing different mechanisms in both stages,and after that,a ciphertext has been obtained.At the end of the article,the latest technique will be compared with different techniques.There will be a discussion on how the present technique is better than all the other techniques;then,the conclusion will be drawn based on comparative analysis. 展开更多
关键词 Symmetric cryptography ciphertext encryption decryption cloud security matrix cipher
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