Software Based Systems : Using Specialized Security Software Essay

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Software-Based Systems In software-based security systems, the coding and decoding of information is done using specialized security software. Due to the easy portability and ease of distribution through networks, software-based systems are more abundant in the market. Encryption is the main method used in these software-based security system. Encryption is a process that modifies information in a way that makes it unreadable until the exact same process is reversed. In general, there are two types of encryption. The first one is the conventional encryption schemes, one key is used by two parties to both encrypt and decrypt the information. Once the secret key is entered, the information looks like a meaningless jumble of random characters. The file can only be viewed once it has been decrypted using the exact same key. The second type of encryption is known as public key encryption. In this method, there are two different keys held by the user: a public key and a private key. These two keys are not interchangeable but they are complementary to each other, meaning that they exists in pairs. Therefore, the public keys can be made public knowledge, and posted in a database somewhere. Anyone who wants to send a message to a person can encrypt the message with the recipient public key and this message can only be decrypted with the complementary private key. Thus, nobody but the intended receiver can decrypt the message. The private key remains on one’s personal computer and

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