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
Encryption technique is the translation of data into a secret code that will prevent hackers or identity thieves from being able to break or read the data that is sent across the network.
When a fellow general received the message, he would wrap the paper around his corresponding scytale to decipher the message (Tyson 2014). Since the advent of computers though, encryption has become increasing important and relies almost solely on cryptographic means to secure information. When speaking about encryption today, it refers more to the process rather than the mathematical formulas used to scramble data. The basic idea behind encrypting a computer message is such that it is scrambled with a sequence of random bits, known as a key, and only parties with the corresponding key can transpose it back into a comprehensible format. These keys are created via a cipher, otherwise known as an algorithm. When a user sends a message, known as the plaintext, across a network, the computer applies an algorithm to the information to encode it, resulting in a ciphertext (Encryption Basics 2014). This method can be best summarized visually:
Most encrypted protocols include a hashing algorithm to ensure no data was altered in transit. This can also help defeat “Man in the Middle” attacks, because by decrypting and re-crypting data, the attacker will alter the signature even if they don’t change any of the key data.
Encryption is the conversion of electronic data into another form, called cipher text, which cannot be easily understood by anyone except authorized parties. The primary purpose of encryption is to protect the confidentiality of digital data stored on computer systems or transmitted via the Internet or other computer networks. Modern encryption algorithms play
Moreover, encryption requires use of a key or cipher, which is used to lock and unlock the hidden data. Such a key is necessary to allow the hidden data to be viewed in an intelligible manner by those who are authorized to view it. However, there is always a risk that the encryption key might fall into the wrong hands, thereby allowing the information to be accessed by unauthorized viewers.
Data, often referred to as plaintext, is encrypted using an encryption algorithm and an encryption key. This process generates ciphertext that can only be viewed in its original form if decrypted with the correct key. Decryption is simply the inverse of encryption, following the same steps but reversing the order in which the keys are applied (Rouse, 2014).
Encyption takes data and transforms it into unreadable jargon until a key is used to unlock or decrypt the data back to its original form. Due to its near infallibility, encryption is one the most best ways to secure data (Williams & Sawyer, 2015).
An encryption algorithm takes the original message and encodes it using the encryption key and creates an encrypted message. The only way to retrieve the original message is by decrypting the message using the encryption key. If the encryption key uses a 128-bit key is the same as saying that there are 128² possible key combinations. Algorithms are classified
To understand encryption, you must place yourself into the internet of the 90’s. At the time the internet was still new, all the data could be seen and accessed easily.The problem was that anyone could access your information and read it. This was a major issue because at that time, internet privacy was almost impossible.
According to the Newton's Telecom Dictionary, cryptography is, "the process of concealing the contents of a message from all except those who know the key," (207). It is also defined as ". . . the science, or art, of secret writing," (Huffman 2). The word "cryptography" originated
What do you need if you want to decrypt encrypted messages and files from a trusted sender? PKI – Public Key Infrastructure
Data security has become a concern for every individual in our country. We hear about data loss from businesses like Target and University of Maryland at College Park and it is easy to wonder where the next security breach will be and whether it will affect us personally. This is intended as a look at the existing data security policies that receive the most public attention, Family Educational Rights and Privacy Act of 1974 (FERPA) (34 CFR) and Health Information Portability and Accountability Act of 2000 (HIPAA) (45 CFR. 76 CFR)with a focus on how these statutes apply to database security and design. These regulations affect every American in some way since nearly every person has been either a student, the parent of a
Encryption converts data from a readable form to unintelligible text. Only authorized users are able to convert the data back into a readable format. (Sayles & Trawick,
Ever since the earliest days of writing, people have had reasons to limit their information to a restricted group of people. Because of this, these people have had to develop ideas of making their information unable to be read by unwanted people. The general techniques used to hide the meaning of messages constitute the study known as cryptography. "Ciphers, in general fall into three major classifications: 1. Concealment Cipher, 2. Transposition Cipher, and 3. Substitution Cipher" (4). Cryptography protects information by altering its form, making it unreadable to unwanted people or groups of people.
Encryption is a method of converting plain text to cipher text using some base keys and