New barbituric acid derivatives for data encryption and decryption based on the mechanochromic fluorescence effect

The Analyst ◽  
2020 ◽  
Vol 145 (15) ◽  
pp. 5325-5332
Author(s):  
Hanjun Zhang ◽  
Zhen Xu ◽  
Furong Tao ◽  
Yan Li ◽  
Yuezhi Cui ◽  
...  
Keyword(s):  
Optical Properties ◽  
Barbituric Acid ◽  
Data Encryption ◽  
Fluorescence Properties ◽  
Encryption And Decryption ◽  
Encryption Decryption ◽  
Barbituric Acid Derivatives ◽  
Fluorescence Effect

CB-Ph and CB-Me have similar color and fluorescence properties, while they exhibit specific differences under the same stimulus. Based on the unique optical properties of CB-Ph and CB-Me, a new data encryption–decryption technology is developed.

Data encryption-decryption based on crystal-induced emission enhancement (CIEE) properties of barbituric acid derivatives

2020 ◽  
Vol 180 ◽  
pp. 108408
Author(s):  
Hanjun Zhang ◽  
Furong Tao ◽  
Zhen Xu ◽  
Yuezhi Cui ◽  
William W. Yu ◽  
...  
Keyword(s):  
Barbituric Acid ◽  
Data Encryption ◽  
Emission Enhancement ◽  
Encryption Decryption ◽  
Barbituric Acid Derivatives

scholarly journals Security and Privacy Issues of IoT at Fog Layer Architecture

2021 ◽  
Author(s):  
Vinay Michael
Keyword(s):  
Data Encryption ◽  
Security And Privacy ◽  
Delivery Ratio ◽  
User Privacy ◽  
Sensitive Data ◽  
Limited Bandwidth ◽  
Cipher Text ◽  
Computational Overhead ◽  
Encryption And Decryption ◽  
Encryption Decryption

Abstract Internet of Things (IoT) based applications and systems are gaining attention in the recent days because of their vast benefits such as efficient utilization of resources, enhanced data collection, improved security, lesser human efforts and reduced time. Security of sensitive data in IoT based fog environments is inevitable to prevent those data to be misused by the attackers. In this study, we present an improved hybrid algorithm termed as HQCP-ABE (Hybrid Quantum key Cipher text Policy Attribute based Encryption with Cipher text update) that integrates highly effective algorithms such as CP-ABE, Quantum key cryptography and cipher text update. The proposed algorithm eliminates the need of costly pairing during decryptions and efficiently performs data encryption, decryption and user authorization. The proposed protocol is demonstrated to be highly efficient in terms of encryption and decryption while compared to other existing methods. It also achieves lesser packet loss, reduced control overheads, reduced computational overhead during encryption and decryption processes, lesser delay, improved security, packet delivery ratio, throughput, network lifetime with limited bandwidth and user privacy. We further considered energy consumption in this study. The proposed HQCP-ABE method is demonstrated using ns3 simulation and compared with existing CP-ABE and PA-CPABE methods.

scholarly journals Data ecryption based on multi-order FrFT, and FPGA implementation of DES algorith

2020 ◽  
Vol 9 (2) ◽  
pp. 141
Author(s):  
A. Rabie ◽  
Kh. El Shafie ◽  
A. Hammuoda ◽  
M. Rohiem
Keyword(s):  
Fourier Transform ◽  
Fractional Fourier Transform ◽  
Data Encryption ◽  
Multimedia Data ◽  
Encrypted Data ◽  
Textual Data ◽  
Encryption And Decryption ◽  
Encryption Schemes ◽  
Symmetric Key ◽  
Encryption Decryption

<span>Cryptography techniques need some algorithms for encryption of data. Most of available encryption techniques are used for textual data; a few of encryption methods are used for multimedia data; However, This Algorithms that are used for textual data may not be inefficient for multimedia, because it is size is greater than the text. Therefore, Cryptosystems need to find and develop a new encryption schemes for such data. The most popular symmetric key algorithms are Data Encryption Standard (DES). However, DES is may be not suitable for multimedia because it consumes times. Encryption and decryption of these data require different methods. In this paper a method for encryption/decryption data by using the nature of FrFT in signals analysis, based on multi-order Fractional Fourier Transform has been introduced. The security of the method used in the encryption work was taken into account to identify the different indicators to measure the security of the encryption Techniques. These indicators are: sensitivity proposed Techniques for the key, the complexity of the processes, and statistical analysis. The key is formed by combination of order of Fractional Fourier Transform. The encrypted data is obtained by the summation of different orders. Numerical simulation results are given to demonstrate this proposed method.</span>

scholarly journals Implementasi Algoritma DES Menggunakan MATLAB

Matematika ◽  
2017 ◽  
Vol 16 (1) ◽  
Author(s):  
Andi Priatmoko ◽  
Erwin Harahap
Keyword(s):  
User Interface ◽  
Graphical User Interface ◽  
Data Encryption ◽  
Data Encryption Standard ◽  
Encryption And Decryption ◽  
Encryption Decryption

Abstrak. Algoritma Data Encryption Standard (DES) adalah algoritma kriptografi yang termasuk dalam algoritma simetrik, dengan menggunakan kunci yang sama untuk enkripsi dan dekripsi. DES menggunakan 16 putaran dengan 16 buah kunci internal yang dapat dibangkitkan dari kunci eksternal yang diberikan oleh pengguna. Kunci eksternal memilik panjang 64 bit digunakan untuk mengenkripsi atau mendekripsi data 64 bit. Proses enkripsi dan dekripsi dari algoritma DES dengan menggunakan software MATLAB mengefisienkan pengguna dalam melakukan proses enkripsi dan dekripsi data. MATLAB dilengkapi dengan fitur Graphical User Interface (GUI) yang dapat menyembunyikan kerumitan program, sehingga dengan adanya interface algoritma DES, pengguna lebih mudah berinteraksi dengan program.Kata Kunci: DES, MATLAB, GUI, Chiperteks, Enkripsi, Dekripsi.Abstract. (The implementations of DES Algorithms Using MATLAB) Data Encryption Standard (DES) is a cryptography algorithm that are included in the algorithms symmetric, by using the same for encryption and decryption. DES the use of 16 rounds with 16 pieces of the key that can be raised from the key external given by the user. The key to the external is 64 bits used to encrypt and decrypt data 64 bits. The process of encryption and decryption of algorithms DES by using software MATLAB efficient users in to do the encryption and decryption. MATLAB is equipped with features Graphical User Interface (GUI) that can hide the complexity of the program, so that with the interface of the DES, users are more easily interact with the program.Keywords: DES, MATLAB, GUI, Chiperteks, Encryption, Decryption. 

The Effect of Barbituric Acid Derivatives on Platelet Function in Vitro and in Vivo

1973 ◽  
Vol 30 (02) ◽  
pp. 315-326
Author(s):  
J. Heinz Joist ◽  
Jean-Pierre Cazenave ◽  
J. Fraser Mustard
Keyword(s):  
Platelet Aggregation ◽  
Platelet Function ◽  
Barbituric Acid ◽  
Platelet Rich Plasma ◽  
Inhibitory Effect ◽  
Primary Response ◽  
Sodium Pentobarbital ◽  
Barbituric Acid Derivatives

SummarySodium pentobarbital (SPB) and three other barbituric acid derivatives were found to inhibit platelet function in vitro. SPB had no effect on the primary response to ADP of platelets in platelet-rich plasma (PRP) or washed platelets but inhibited secondary aggregation induced by ADP in human PRP. The drug inhibited both phases of aggregation induced by epinephrine. SPB suppressed aggregation and the release reaction induced by collagen or low concentrations of thrombin, and platelet adherence to collagen-coated glass tubes. The inhibition by SPB of platelet aggregation was readily reversible and isotopically labeled SPB did not become firmly bound to platelets. No inhibitory effect on platelet aggregation induced by ADP, collagen, or thrombin could be detected in PRP obtained from rabbits after induction of SPB-anesthesia.

Synthesis, Molecular Modeling and Biological Evaluation of 5-arylidene-N,N-diethylthiobarbiturates as Potential α-glucosidase Inhibitors

2019 ◽  
Vol 15 (2) ◽  
pp. 175-185 ◽  
Author(s):  
Momin Khan ◽  
Sehrish Khan ◽  
Amir Ul Mulk ◽  
Anis Ur Rahman ◽  
Abdul Wadood ◽  
...  
Keyword(s):  
Molecular Modeling ◽  
Barbituric Acid ◽  
Aromatic Aldehydes ◽  
Biological Evaluation ◽  
Distilled Water ◽  
Sound Effects ◽  
Glucosidase Inhibitors ◽  
Ic50 Values ◽  
Antiviral Activities ◽  
Barbituric Acid Derivatives

Background:Barbituric acid derivatives are a versatile group of compounds which are identified as potential pharmacophores for the treatment of anxiety, epilepsy and other psychiatric disorders. They are also used as anesthetics and have sound effects on the motor and sensory functions. Barbiturates are malonylurea derivatives with a variety of substituents at C-5 position showing resemblance with nitrogen and sulfur containing compounds like thiouracil which exhibited potent anticancer and antiviral activities. Recently, barbituric acid derivatives have also received great interest for applications in nanoscience.Objective:Synthesis of 5-arylidene-N,N-diethylthiobarbiturates, biological evaluation as potential α-glucosidase inhibitors and molecular modeling.Methods:In the present study, N,N-Diethylthiobarbituric acid derivatives were synthesized by refluxing of N,N-diethylthiobarbituric acid and different aromatic aldehydes in distilled water. In a typical reaction; a mixture of N,N-diethylthiobarbituric acid 0.20 g (1 mmol) and 5-bromo-2- hydroxybenzaldehyde 0.199 g (1 mmol) mixed in 10 mL distilled water and reflux for 30 minutes. After completion of the reaction, the corresponding product 1 was filtered and dried and yield calculated. It was crystallized from ethanol. The structures of synthesized compounds 1-25 were carried out by using 1H, 13C NMR, EI spectroscopy and CHN analysis used for the determination of their structures. The α-glucosidase inhibition assay was performed as given by Chapdelaine et al., with slight modifications and optimization.Results:Our newly synthesized compounds showed a varying degree of α-glucosidase inhibition and at least four of them were found as potent inhibitors. Compounds 6, 5, 17, 11 exhibited IC50 values (Mean±SEM) of 0.0006 ± 0.0002, 18.91 ± 0.005, 19.18 ± 0.002, 36.91 ± 0.003 µM, respectively, as compared to standard acarbose (IC50, 38.25 ± 0.12 µM).Conclusion:Our present study has shown that compounds 6, 5, 17, 11 exhibited IC50 values of 0.0006 ± 0.0002, 18.91 ± 0.005, 19.18 ± 0.002, 36.91 ± 0.003 µM, respectively. The studies were supported by in silico data analysis.

scholarly journals Chemo and regioselective serendipitous electrochemically initiated spirocyclization of caffeic acid esters with barbituric acid derivatives

2015 ◽  
Vol 178 ◽  
pp. 533-540 ◽  
Author(s):  
Abdolhamid Alizadeh ◽  
Mohammad Mehdi Khodaei ◽  
Mitra Fakhari ◽  
Gisya Abdi ◽  
Sohrab Ghouzivand
Keyword(s):  
Caffeic Acid ◽  
Barbituric Acid ◽  
Caffeic Acid Esters ◽  
Barbituric Acid Derivatives ◽  
Acid Esters
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