Symmetric and Asymmetric Encryption
Ian Pierre Gomes Santos
1. Introduction
When it comes to information and about this concept related to the digital medium, particularly in the use of public computer networks like the Internet, various services relevant to human’s credibility in computing systems are performed. In fact, they are really important in the fundamentals of security information that are defined by the availability, integrity, confidentiality, authentication, non-repudiation, and finally authorization, which should be free and readily apparent understanding when performing computational transactions:
• Availability - ensuring that information is available for the desired access point.
• Integrity - ensuring that the
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Thus, it is essential that computational techniques are performed so that the requirements of information protection are met. In this scenario are presented the two basic types of encryption, symmetric or private key and public key or asymmetric.
2. Symmetric or Private Key Encryption
The oldest cryptography model, where the key,the element that gives access to the hidden message exchanged between sender and recipient is equal (symmetric) for both of them and should remain secret (private). Typically, this key is represented by a password, used by both the sender to encrypt the message and the recipient to decrypt it.
Essentially, when the sender encrypts a message, it uses a cipher algorithm to convert the plain text of the message into cipher text. When the destination deciphers a message, it uses the corresponding deciphering algorithm to convert the cipher text back into a clear message. If an intruder knows the cipher algorithm, s/he could just decipher an encrypted message as easily as the destination. The solution in the use of private key encryption proposes that when the sender encrypts a message,
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.
In today’s world of instant connectivity and information at users’ fingertips, it’s vital that sensitive information is safeguarded against those who seek to do personal harm and profit from gaining access to the data. The key behind keeping information safe is the method in which it’s protected and encrypted. In order to appreciate how information is secured, users must understand the encryption concepts behind it. To do this, one must comprehend the current encryption standards, the trends and developments in encryption technology, the importance of securing data, the government’s regulations pertaining to encryption, the companies involved in research and implementation, the implications of leaked or stolen data, and a brief look into
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).
M2 – Explain the operation and use of encryption technique in ensuring security of transmitted information
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.
Encryption is one of the most important technologies of cybersecurity designed to protect the confidentiality of data. Encryption uses a complex mathematical formula and a key which randomizes and creates a coded or encrypted message. Only the party that the message or data is originally intended for can read in plain text by using the appropriate key to decrypt the data. Some encryption algorithms such as AES (Advanced Encryption Standard) are very complex
Encryption is a process of converting Plain text into Cipher text. This un-readable message can be communicated over an unsecure network without the fear of loss of integrity and confidentiality. Encryption process is done using encryption algorithm.
For sending information over any computer or digital communications device, the initial step would be for the sender to generate their message. After generating the message, the sender should assign a hash value to it, this is a code of the message. The sender would want to protect his hash to prevent it being stolen or altered, therefore the sender would use a hashing algorithm to encrypt the message using their private key. The hash would then be attached to a message or whatever medium is being used to communicate. The sender would use their digital signature to sign the message, which would fulfill the non-repudiation requirement. The message would then be encrypted using the public key of the recipient. At this point the message is ready to be sent to the
The aim of this document is to provide an overview on the various cryptographic technologies in use today and what the future might hold. The document will cover the following subjects:
Transmission of data from one place to another securely becomes a challenging issue in this highly technological era. Stealing the information becomes the full-time job of hackers. To send the data secretly, encryption algorithms are used. Many encryption techniques are evolving to protect the information being send. In this essay, two different encryption methods, Quantum Key Description and Honey Encryption were explained briefly. Also, this essay addresses their benefits and limitations and the areas in which the algorithms are used.
Encryption is a method of programming data for security so that it appears to be random data. Only the people sending and receiving the information have the key to decrypt the message, which will put it back into its original form making it readable. The only people with the key are the people who are intended to read the message. Not many people know what encryption is. I took a survey of twenty students and asked two questions. The first question I asked was do you know what encryption means and the second question I asked was have you ever heard of anybody using encryption. This is a chart of the information I received:
One of many communication models can be seen in illustration three and explains the way, in which the encoding and decoding process from the sender and recipient
In software-based security systems, the coding and decoding of information is done using specialized security software. Due to the easy portability and ease of distribution through networks, software-based systems are more abundant in the market. Encryption is the main method used in these software-based security system. Encryption is a process that modifies information in a way that makes it unreadable until the exact same process is reversed. In general, there are two types of encryption. The first one is the conventional encryption schemes, one key is used by two parties to both encrypt and decrypt the information. Once the secret key is entered, the information looks like a meaningless jumble of random characters. The file can only be viewed once it has been decrypted using the exact same key. The second type of encryption is known as public key encryption. In this method, there are two different keys held by the user: a public key and a private key. These two keys are not interchangeable but they are complementary to each other, meaning that they exists in pairs. Therefore, the public keys can be made public knowledge, and posted in a database somewhere. Anyone who wants to send a message to a person can encrypt the message with the recipient public key and this message can only be decrypted with the complementary private key. Thus, nobody but the intended receiver can decrypt the message. The private key remains on one’s personal computer and