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Information Security and Encryption

Good Essays

M1 – Discuss Information Security M2 – Explain the operation and use of encryption technique in ensuring security of transmitted information What is encryption? Encryption is a method of encoding a message or information before sending it, so unauthorized users can’t access it without permission and only the person who has authorised access to it can decode it. Encryption is used to keep things secure and keep things confidential within the organisation. For example let’s say you have a chat with a friend on Skype, when you’re sending a message to him, that message will display as random symbols until he receives it, which then decodes it and makes it so that only he can read it. This allows the communication to be secure and private, no one will be able to know what the message says. What is decryption? Decryption is when the receiver decodes the information that has been sent to them. This is done with their own private key which only he has access to. Public key and Private Key There’s two types used in encryption, there’s the public key which is used to encrypt the information you trying to send. There is also the private key which is used to decrypt the message. The public and private key is used in many things for example emails and telephones. The reason why it’s so important that these two keys are used is because the message you’re sending stays between you and the receiver, therefore the message will not get interrupted by an invader. M3

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