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Domain Name Server is a prominent building block of the Internet. It’s developed as a system to convert alphabetical names into IP addresses, allowing users to access websites and exchange e-mails. DNS is organized into a tree-like infrastructure where the first…
Encrypt “The key is hidden under the door” using playfair cipher with keyword “domestic”. Playfair Matrix in step 1 (draw it in step 1 only ) : D O M E S T I C A B F G H…
Playfair Matrix: D O M E S T I C A B F G H K L N P Q R U V W X Y Z Encrypted Message: CFARAEBOGCMVOSPNVTAYCFSOMWEP
Security services A processing or communication service that enhances the security of the data processing systems and the information transfers of an organization. These services are intended to counter security attacks, and they make use of one or more security…
Database security involves implementing measures to protect a database from unauthorized access, data corruption, and other threats. Its requirements include ensuring confidentiality, integrity, availability, and accountability of the data within the database. Confidentiality: Data should only be accessible to authorized…
Properties/ characteristics of hash functions To be a reliable cryptographic tool, the hash function should have the following charactersitcs − Pre-Image Resistance According to this feature, reversing a hash function should be computationally difficult. In other words, if a hash…
A database is an organized collection of structured data stored electronically in a computer system. It is designed to efficiently manage, retrieve, and manipulate large volumes of data for various purposes. Databases are commonly used in businesses, organizations, and applications…
Secure Socket Layer (SSL) provides security to the data that is transferred between web browser and server. SSL encrypts the link between a web server and a browser which ensures that all data passed between them remain private and free from…
Windows operating systems have been targeted by various types of vulnerabilities over the years. Here are some common vulnerabilities found in Windows OS along with brief explanations: Buffer Overflow: Buffer overflow vulnerabilities occur when a program attempts to store more…
An X.509 digital certificate is a standard format for public key certificates used in various internet protocols, such as TLS/SSL for secure communication, S/MIME for secure email, and others. It contains information about the entity it identifies, along with the…