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What is Secure Sockets Layer (SSL) and How it Works Secure Sockets Layer (SSL) is the most widely used technology for providing a secure communication between the web client and the web server. Most of us are familiar with many sites such as Gmail, Yahoo etc. using https protocol in their login pages. When we see this, we may wonder what’s the difference between http and https. In simple words, a HTTP protocol is used for standard communication between the Web server and the client. HTTPS is used for a “Secure communication”. Working of HTTP: When A sends a message to B, the message is sent as a plain text in an unencrypted manner. This is acceptable in normal situations where the messages exchanged are not confidential. But, imagine a situation where A sends a PASSWORD to B. In this case, the password is also sent as a plain text. This has a serious security problem because, if an intruder (hacker) can gain unauthorized access to the ongoing communication between Aand B , he can...

What is MD5 algorithm? MD5 which stands for Message Digest algorithm 5 is a widely used cryptographic hash function that was invented by Ronald Rivest in 1991. The idea behind this algorithm is to take up a random data (text or binary) as an input and generate a fixed size “hash value” as the output. The input data can be of any size or length, but the output “hash value” size is always fixed. whatever the input size you give, the algorithm generates a fixed size (32 digit hex) MD5 hash Applications of MD5 Hash:  when a file is downloaded from the Internet. The file can be corrupted due to any of the following reasons:  Data loss during the download process, due to instability in the Internet connection/server. The file can be tampered due to virus infections or Due to Hacker attacks. So, whenever you download any valuable data from the Internet, it is completely necessary that you check the integrity of the downloaded file. That is, you need to ensure that the downloade...

Basic Of Malwares Computer Virus: As we all know, this is the type of malware that has become highly popular and is one of the most widely discussed topic in the field of computer security. A virus is just a computer program that is designed to take unauthorized control of the infected computer so as to cause harm to the system’s data or degrade its performance. Mode of operation: Computer viruses operates by attaching themselves to an already existing file or program and replicates itself to spread from one computer to another. In most cases, they tend to infect executable files that are parts of legitimate programs. So, whenever the infected file is executed on a new computer, the virus gets activated and begins to operate by further replication or causing the intended damage to the system. A virus cannot perform its task of harming and replication unless it is allowed to execute. This is the reason why viruses often choose an executable file as its host and get attached to them. Vi...