Encryption is a process that turns information that is plainly readable into scrambled form in order to preserve the authenticity, integrity, and privacy of the information that passes through the security perimeter (Michael E. Whitman, 2009). It is the conversion of electronic data into another form, called ciphertext, which cannot be easily understood by anyone except authorized parties (Rouse, 2014).
Dm_Crypt is a filesystem software built into Linux that encrypts data and writes it to the storage device. There are various tools that have to be used with dm_Crypt such as cryptsetup and cryptmount. Dm_Crypt uses LUKS, Linux Unified Key Setup (a format on the drive)
Encrypting files is an effective way of securing information over the internet and protect the confidentiality and integrity of data. 128-bit encryption is the mathematical equivalent of key combinations used by encryption and decryption algorithms to keep data transmission secure. The strength of a key is in the key length, and numbers of bits in a key, the longer the key the more secure or hard it will be to crack the encryption.
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.
- Prep the machine: Before enabling encryption on the HDD, ensure the machine is clean and running properly beforehand. It’s essential that there are no disk problems that would render code specific to the encryption engine to be unreadable.
“Encryption is a way to enhance the security of a message or file by scrambling the contents so that it can be read only by someone who has the right encryption key to unscramble it” (Microsoft). Encryption uses an algorithm to change plain text data to cipher text. It played a very important role in wars and in military circles to protect top secret information from foreign countries.
Encryption has different meanings depending on what you context you are using it in, but for the cyber context is means to “convert electronic data into another form, called cipher text, which cannot be easily understood by anyone except authorized parties” (Rouse,
Encryption has become a necessity in modern society due to the nature of the information we must interact with every day. Furthermore, the encryption of computer data is becoming increasingly important since much sensitive information is stored on our hard drives and human based codes are simply too easy for a computer to solve. All forms of encryption are based on cryptology which is "the science of analyzing and deciphering codes and ciphers and cryptograms". Cryptology and simple codes have been used as early as the Roman Empire. Encryption is used to ensure the confidentiality of a message that is being sent is not compromised as in case of the message being intercepted, it ensure that only authorized individuals can understand the contents. As technology, has been advancing, the complex nature of encrypting and decrypting messages have also been advancing the electronic age has brought forth many technological advances. With these advances came the need for security and tighter control on how we send information electronically over the Internet or through a network. Date encryption is, in its simplest terms, the translation of data into a secret code. To read an encrypted file, the receiver of the file must obtain a secret key that will enable him to decrypt the file. A deeper consider cryptography, cryptanalysis, and the Data Encryption Standard (DES) will provide a better understanding of data encryption.
Some data is very sensitive and therefore it has to be hidden away from parties who are not supposed to view it. In this age of computers, their capacity for transfer and retrieval of information may be exploited by other parties to gain access to confidential and potentially dangerous data. Therefore, measures have been taken to ensure that data is not accessed by others which is done by using several methods which, besides physical security, includes the use of encryption algorithms which are programs that change the way information looks by rendering it illegible.
Cryptography is the investigation of the strategies of mystery composing, particularly code and figure frameworks, systems, methodology, forms and so on. It is a strategy for putting away and transmitting information in a specific structure. The term is regularly connected with scrambling plain content into figure content likewise called encryption, then back again called as unscrambling. It is a method utilized in securing trustworthiness of electronic messages by changing over them into figure content structure. Just the utilization of a mystery key can change over the figure content again into clear content structure. Cryptography programming and equipment gadgets use numerical calculations to change content starting with one structure then onto the next.
Encrypt(pk, i, m): executed by any individual who needs to scramble information. On data an open key pk, a file i meaning the cipher text class, and a message m, it yields a cipher text C.
Encryption software: software that scrambles the information on your computer and is keyed to a certain word or phrase.The information is still there but it is no longer readable.In order to read the information you must enter the password to unencrypt the information.
If the others intercepted the message, they will get only unreadable data, and will not gain anything. Unless they try to figure out the decryption algorithm and obtain key. This is the reason that the key never sent with the message, and it has to be kept secret all the time. If this key is compromised, the message sender and the encrypted data is no longer sage. furthermore, the way they can protect this data should agree on a new key to prevent any further damage. The encryption helps people to ensure that their data doesn 't get ready by wrong people, and also ensure that data isn 't altered in transit, and verify the identity of the sender.
Encryption is the process of encoding information in such a way that only the person (or computer) with the key can decode it. Encryption is a way to enhance the security of a message or file by scrambling the contents so that it can be read only by someone who has the right encryption key to unscramble it.
And encrypt.enc, encrypted.enc, encryptedfile.des are the encrypted files with password, We need to send these files to destination and tell them the password.