scholarly journals Pengamanan Sistem Informasi Melalui Enkripsi Data

2020 ◽  
Author(s):  
Mashur Razak
Keyword(s):  
Information System ◽  
System Security ◽  
Public Key Cryptography ◽  
Economic Resources ◽  
Security Issue ◽  
Non Profit ◽  
Plain Text ◽  
Cipher Text ◽  
Commercial Organizations ◽  
Malicious Program

In the era of information -based society information is one of the very important economic resources. the ability to access and profide information quickly and accurately becomes very essential for organization, whether in the form of commercial organizations or non profit organizations. the value ao an information leads to the desired information is often can only be accessed by certain people. therefore, security issue is an important aspect within information system. the develoment of information technology especially in data communications generate information system more vlnerable to various types of threats that can damage the system or data.threats can come from the hacker attack sand malicious program smade up of trap doors, logic bombs, trojan horses and viruses. therefore, information management that to provide security system that can be used in encriyption, which is aprocess to secure a message(called plain text) into a hiden mesagge (called cipher text). Ciphertext is a message that is not readabl. Encryptionis used to encrypt the data or information that cannot be read by unauthorized people. by encrypting, the data is encoded using a key. to open (decrypt) the data, a key is needed which can be the same as the key to encrypt ( for the case of private key Cryptography based information system security) or with a different key (for the case of public key cryptography). Implementation of data Encryptionis expected to provide data and system security that covers confidentiality integrity and availability.

scholarly journals Picpass Algorithm for Solution of Key Exchange Problem in Symmetric and Asymmetric Key Cryptography

2021 ◽  
pp. 305-308
Author(s):  
Anchal Goyal ◽  
Deepinder Kaur
Keyword(s):  
Public Key Cryptography ◽  
Key Exchange ◽  
Secret Key ◽  
Dictionary Attack ◽  
Plain Text ◽  
Cipher Text ◽  
Compact Size ◽  
Private And Public ◽  
Symmetric Key ◽  
Dictionary Attacks

In this dissertation a PicPass algorithm is proposed for the solution of Key Exchange problem using Symmetric and Asymmetric key cryptography. Diffie and Hellman proposed an algorithm for key exchange. But this algorithm suffers from Man-in middle attack. So to overcome this problem Seo proposed another algorithm that uses text password for the agreement between two parties. But again the password suffers from offline dictionary attack. In this, a PicPass Protocol i.e. picture is used as a password to make an agreement between two parties. The protocol contains two function i.e. picture function as well as distortion function is used to make picture in a compact size and then it is sent to receiver. Firstly the sender encrypts the Plain Text using Secret Picture and creates the Cipher Text using Symmetric key cryptography.Then the Secret Picture will be encrypted by covered picture resulting into Encrypted Picture.Now the Cipher Text and Encrypted Picture will be placed into digital envolpe and then the envelope will be send to the receiver. The receiver will receive the digital envelope, open it and then decrypt the Encrypted Picture using his Key Picture. This will result the receiver to get the Secret Picture. Now the receiver will open the Cipher Text using the Secret Picture and get the Plain Text. In between if any person wants to predict the Encrypted Picture then he cannot guess as the picture will only be decrypted using the Secret Key which will be only with the receiver. So in this dissertation, a picture is used as a password to authenticate key exchange is that gives practical solution against offline dictionary attacks only by using both private and public key cryptography.

scholarly journals Lossless and Reversible Data Hiding using Public Key Cryptography

2020 ◽  
Vol 32 ◽  
pp. 02002
Author(s):  
Pooja Shetye ◽  
Srushti Varekar ◽  
Manali Zajam ◽  
Monika Pawar ◽  
Sujata Kadam
Keyword(s):  
Data Hiding ◽  
Internet Access ◽  
Public Key Cryptography ◽  
Secret Message ◽  
Major Drawback ◽  
Plain Text ◽  
Private Key ◽  
Aes Algorithm ◽  
Cipher Text ◽  
Encryption And Decryption

In today’s world, the internet is a platform, where large amount of data can be obtained and transferred. Different technologies and internet access are used to transfer the data which can be accessed by authorized and unauthorized users.The major drawback of these technologies are that any unauthorized person can access it.Hence encryption and decryption is perform on Message/Data .In encryption the plain text/image is converted into cipher text/image.The technique of data hiding is used to hide the data that has to be transferred from the source to the destination.The process involves insertion of secret message in the cover image which is encrypted with the help of AES algorithm. This algorithm generates public/private key. All this process can be performed in lossless and reversible manner.

scholarly journals Information System Security Audit Based on the DSS05 Framework Cobit 5 at Higher Education XX

2021 ◽  
Vol 9 (1) ◽  
pp. 35
Author(s):  
Rudolf Sinaga ◽  
Samsinar Samsinar ◽  
Renny Afriany
Keyword(s):  
Information System ◽  
System Security ◽  
Educational Institutions ◽  
Security Evaluation ◽  
Security Audit ◽  
Tertiary Institution ◽  
Information System Security ◽  
Access Rights ◽  
Commercial Organizations ◽  
To Receive

Currently, information has become a commodity or basic need, it can even be said that we are already in an "information-based social" era. It is undeniable that the ability to access and ensure the availability of information quickly and accurately has become a very essential component for an organization, whether in the form of social or commercial organizations, educational institutions such as universities, government agencies, and individuals. Various channels were created to regulate access rights to information, to prevent unauthorized people from accessing it, to minimize losses for the owner of the information. Based on the results of interviews with the research object of XX college, there are still frequent disruptions to information system security such as attacks on servers that result in server downtime, attacks on institutional e-mails that result in being unable to receive or even send e-mails, and other disturbances. This certainly harms information services at the tertiary institution, therefore an information system security audit is required. This study aims to measure the level of information system security capabilities using the Cobit 5 framework in the APO13 and DSS05 domains. Based on the results of the audit, it was found that the GAP value was 3.6 for the APO13 domain or at level 1 while 3.4 for the GAP DSS05 value or at level 2, it can be concluded that the information system security maturity level is still very low so that it needs improvement. It is recommended to make SOPs and documentation of maintenance, control, and periodic security evaluation, install an antivirus that has high and up to date protection accuracy, and make regular maintenance reports both on software and hardware.

Integrating Cooperative Engagement Capability into Network-Centric Information System Security

2003 ◽  
pp. 50-62
Author(s):  
Sr. Korzyk
Keyword(s):  
Information System ◽  
Large Scale ◽  
System Security ◽  
Central Authority ◽  
Security Systems ◽  
Force Element ◽  
Commercial Organizations ◽  
Defensive Measures ◽  
Dramatic Departure ◽  
The U.S

The U.S. military’s concept of a Cooperative Engagement Capability should serve as a useful referent for those attempting to design/develop large scale, organization-wide information security systems. This concept involves centralizing command over the entire suite of defensive assets (naval, air, ground) available in some region or locale; whenever a threat is directed against any US force element (a ship, an infantry unit, etc.), this central authority would then be expected to direct the deployment of whatever appears to be the most efficient countermeasure…in light of prospective as well as actual threats. This is a dramatic departure from the traditional decentralized approach, whereby each force element was expected to draw on its own defensive measures to counter any threat directed at it from any source. Industrial/commercial organizations might draw on the logic of the Cooperative Engagement Capability logic in devising a system to secure its informational assets.

scholarly journals Implementasi Algoritma Rot Dan Subtitusional Block Cipher Dalam Mengamankan Data

2017 ◽  
pp. 73-79
Author(s):  
Ayu Pratiwi
Keyword(s):  
Information System ◽  
Information Systems ◽  
Block Cipher ◽  
Rapid Development ◽  
Encryption Algorithm ◽  
New Techniques ◽  
Plain Text ◽  
Cipher Text ◽  
Processing Data ◽  
Confidential Data

The security and confidentiality of data is one of the most important aspects in the information system at this time. Caused by the rapid development of science and technology that allows the emergence of new techniques, which are misused by certain parties that threaten the security of information systems. In general, the data are categorized into two, namely confidential data and data that is not confidential. Data that is not confidential is usually not too much attention. What really needs to be considered is confidential data, where every information contained in it will be very valuable for those who need it because the data can be easily duplicated. The ROT-n algorithm is one simple encryption algorithm that uses alphabetical shifts as much as n to convert plain text into cipher text, whereas Block ciphers work by processing data in blocks, where several characters / data are combined into one block. Each one block process produces one block output as well.

scholarly journals An Implementation of Picpass Algorithm for the Solution of Key Exchange Problem

2021 ◽  
pp. 76-79
Author(s):  
Er. Krishan Kumar ◽  
Nidhi Singla
Keyword(s):  
Public Key Cryptography ◽  
Key Exchange ◽  
Secret Key ◽  
Dictionary Attack ◽  
Plain Text ◽  
Cipher Text ◽  
Compact Size ◽  
Private And Public ◽  
Symmetric Key ◽  
Symmetric Key Cryptography

In this dissertation a PicPass algorithm is proposed for the solution of Key Exchange problem using Symmetric and Asymmetric key cryptography. Diffie and Hellman proposed an algorithm for key exchange. But this algorithm suffers from Man-in middle attack. So to overcome this problem Seo proposed another algorithm that uses text password for the agreement between two parties. But again the password suffers from offline dictionary attack. In this, a PicPass Protocol i.e. picture is used as a password to make an agreement between two parties. The protocol contains two function i.e. picture function as well as distortion function is used to make picture in a compact size and then it is sent to receiver. Firstly the sender encrypts the Plain Text using Secret Picture and creates the Cipher Text using Symmetric key cryptography. Then the Secret Picture will be encrypted by covered picture resulting into Encrypted Picture. Now the Cipher Text and Encrypted Picture will be placed into digital envelope and then the envelope will be send to the receiver. The receiver will receive the digital envelope, open it and then decrypt the Encrypted Picture using his Key Picture. This will result the receiver to get the Secret Picture. Now the receiver will open the Cipher Text using the Secret Picture and get the Plain Text. In between if any person wants to predict the Encrypted Picture then he cannot guess as the picture will only be decrypted using the Secret Key which will be only with the receiver. So in this dissertation, a picture is used as a password to authenticate key exchange is that gives practical solution against offline dictionary attacks only by using both private and public key cryptography.

Comparative Study of Cryptography for Cloud Computing for Data Security

2019 ◽  
Vol 13 ◽  
Author(s):  
Priya Mathur ◽  
Amit Kumar Gupta ◽  
Prateek Vashishtha
Keyword(s):  
Cloud Computing ◽  
Data Security ◽  
Elliptic Curve Cryptography ◽  
Plain Text ◽  
Hybrid Encryption ◽  
Cipher Text ◽  
Business Applications ◽  
Computing Grid ◽  
Cloud Servers ◽  
Client Side

Cloud computing is an emerging technique by which anyone can access the applications as utilities over the internet. Cloud computing is the technology which comprises of all the characteristics of the technologies like distributed computing, grid computing, and ubiquitous computing. Cloud computing allows everyone to create, to configure as well as to customize the business applications online. Cryptography is the technique which is use to convert the plain text into cipher text using various encryption techniques. The art and science used to introduce the secrecy in the information security in order to secure the messages is defined as cryptography. In this paper we are going to review few latest Cryptographic algorithms which are used to enhance the security of the data on the cloud servers. We are comparing Short Range Natural Number Modified RSA (SRNN), Elliptic Curve Cryptography Algorithm, Client Side Encryption Technique and Hybrid Encryption Technique to secure the data in cloud.

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