Types of Encryption

Encryption is a process that takes information and transcribes it into a different form that is unable to read by anyone who does not have the encryption code. Depending on the type of encryption, information can be displayed as various numbers, letters, or symbols. Those who work in cryptography fields make it their job to encrypt information or to break codes to receive encrypted information.

Manual Encryption

Manual encryption is a type that involves the use of encryption software. These are computer programs that encrypt various bits of information digitally. Manual encryption involves the user's participation completely. The files he wants to encrypt are chosen, and then an encryption type is chosen from a list that the security system provides. This is great for personal computers because it allows a user to encrypt personal files in a way that will suit him, thus protecting personal material on a computer.

Transparent Encryption

Transparent encryption is another type of computer software encryption. It can be downloaded onto a computer to encrypt everything automatically. This is one of the most secure types of encryption available because it doesn't leave out anything that might be forgotten when using manual encryption. Every executable application and file created in the computer has an encrypted copy that can withstand power surges and protects information in case a computer is stolen.

Symmetric Encryption

Not all encryption is done via a computer software program. You can easily encrypt information by yourself. One of the simplest ways to do this is through symmetric encryption. Here, a letter or number coincides with another letter or number in the encryption code. You can make the code up yourself--for example, a=1, b=2 and so on. You can take any written text and substitute letters and numbers for their coded counterpart, thus encrypting the text.

Asymmetric Encryption

Asymmetric encryption is a secure and easy way that can be used to encrypt data that you will be receiving. It is generally done electronically. A public key is given out to whomever you want or posted somewhere for the public to see. They can then encrypt information using the key and send it to you. This is often done when writing emails. However, to decipher the encrypted code, there is another key, a private one, that only one person has. This means that while any can encrypt the data with the public key, it can only be read again by whomever has the private key.

Email Encryption

As mentioned, email encryption typically uses asymmetrical encryption methods. This entails that emails that are received cannot be read by others, such as hackers who may be trying to get into an email inbox. There are two types of encryption methods used with email. The first is when a central station, such as an email provider, has the sole decision in who gets the private key to the email. This is usually given only to the user of an email address. The second type gives the user control over who gets the key. This means they can allow others to read encrypted emails with the private key they are given.