Caesar cipher is substitution technique cipher In Caesar cipher we replace each alphabet with the alphabet that is actually...
Keys distribution in each technique Symmetric-key: It only needs one key to encrypt and decrypt the message. Both user...
The principle of availability states that information should be available to authorized user at all the time. Example :-...
There are situation where a user sends a message, and later on refuses that he had sent that message...
The first stage is called Pre-trigger stage or the dormant stage. In this stage viruses lie dormant, and does...
Parasitic Virus:- his is the most common form of virus. Such a virus attaches itself to executable files and...
Fraud:- Modern fraud attacks concentrate on manipulating some aspects of electronic currency, credit cards, electronic stock certificates, checks, letters...
When content of message change after sending the message by sender but before receiver receive it then we can...
Authentication mechanism helps to establish proof of identity. This process ensures that origin of an electronic document or message...
The principle of confidentiality specifies that only the sender and intended recipient should be able to access the...
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