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Let's step through the high-level process of public key encryption.Step 1: Key generation. Each person (or their computer) must generate a pair of keys that identifies them: a private key and a public key.Step 2: Key exchange.Step 3: Encryption.Step 4: Sending encrypted data.Step 5: Decryption.

In a symmetric encryption algorithm, both the sender and the recipient use the same key (known as the secret key) to encrypt and decrypt the message.For example, if the key is 2, "A" would become "C", "B" would become "D", and so on.

Encryption is the process of encoding a document or data so that only individuals with access to a secret key, password, or token can open and decrypt (make readable) the information.

Password. An encryption key is not the same as a password. The main difference between the two is that a password is created, read, and remembered by a human user, while a key is used by the software that implements the algorithm, meaning it does not have to be readable by a human.

How to encrypt a file folder or fileOn your home computer, choose the file or folder you want to encrypt and right-click on it.Select Properties.Select the Advanced button then check the box next to Encrypt contents to secure data.Press OK, which will close the Advanced Attributes window.More items...?Aug 5, 2019

Encrypt a single messageIn message that you are composing, click File > Properties.Click Security Settings, and then select the Encrypt message contents and attachments check box.Compose your message, and then click Send.

How to encrypt a fileRight-click (or press and hold) a file or folder and select Properties.Select the Advanced button and select the Encrypt contents to secure data check box.Select OK to close the Advanced Attributes window, select Apply, and then select OK.