What is the transformation of data into a form that is unreadable to anyone without an appropriate description ki?

Definition: The conversion of encrypted data into its original form is called Decryption. It is generally a reverse process of encryption. It decodes the encrypted information so that an authorized user can only decrypt the data because decryption requires a secret key or password.

Description: One of the reasons for implementing an encryption-decryption system is privacy. As information travels over the Internet, it is necessary to scrutinise the access from unauthorized organisations or individuals. Due to this, the data is encrypted to reduce data loss and theft. Few common items that are encrypted include text files, images, e-mail messages, user data and directories. The recipient of decryption receives a prompt or window in which a password can be entered to access the encrypted data. For decryption, the system extracts and converts the garbled data and transforms it into words and images that are easily understandable not only by a reader but also by a system. Decryption can be done manually or automatically. It may also be performed with a set of keys or passwords.

There are many methods of conventional cryptography, one of the most important and popular method is Hill cipher Encryption and Decryption, which generates the random Matrix and is essentially the power of security. Decryption requires inverse of the matrix in Hill cipher. Hence while decryption one problem arises that the Inverse of the matrix does not always exist. If the matrix is not invertible then the encrypted content cannot be decrypted. This drawback is completely eliminated in the modified Hill cipher algorithm. Also this method requires the cracker to find the inverse of many square matrices which is not computationally easy. So the modified Hill-Cipher method is both easy to implement and difficult to crack.

Definition: Cryptography is associated with the process of converting ordinary plain text into unintelligible text and vice-versa. It is a method of storing and transmitting data in a particular form so that only those for whom it is intended can read and process it. Cryptography not only protects data from theft or alteration, but can also be used for user authentication.

Description: Earlier cryptography was effectively synonymous with encryption but nowadays cryptography is mainly based on mathematical theory and computer science practice.

Modern cryptography concerns with:

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Three types of cryptographic techniques used in general.

Symmetric-key Cryptography: Both the sender and receiver share a single key. The sender uses this key to encrypt plaintext and send the cipher text to the receiver. On the other side the receiver applies the same key to decrypt the message and recover the plain text.

Public-Key Cryptography: This is the most revolutionary concept in the last 300-400 years. In Public-Key Cryptography two related keys (public and private key) are used. Public key may be freely distributed, while its paired private key, remains a secret. The public key is used for encryption and for decryption private key is used.

Hash Functions: No key is used in this algorithm. A fixed-length hash value is computed as per the plain text that makes it impossible for the contents of the plain text to be recovered. Hash functions are also used by many operating systems to encrypt passwords.

Software programs, like other creative works, are released to its users under certain terms and conditions called licenses. When a license gives its users the rights/freedoms to use, study, copy, modify, improve, and redistribute it, then the software is considered free, or libre, and open-source software (FOSS).

Background: In software development, companies and developers write software as a collection of many files called the source code or the code base. When the software is ready for use, they compile the source code into executable files. For example, applications on Windows and macOS typically have the file extensions .exe and .app, respectively. These executable files are usually unreadable and recovering the source from them is usually impossible.

• If the developers keep their source code private, then the software is said to be proprietary or closed-source.
• If the developers publish the source code for the public to study it, but do not grant them the all freedoms of open-source software, then software is called source-available.

In conventional software development, companies release proprietary software and they require you to purchase a license or subscription in order to use it. This sometimes works well for consumers, but there are important restrictions to be aware of when using proprietary software. If a software program prevents you from exporting your data and using it in another compatible program, then you are forced to maintain a subscription for it in order to maintain access to your work. This tactic, known in economics as vender lock-in or consumer lock-in, is a way for technology companies to make it difficult for you to stop using their services.

Free and open-source software avoids locking-in consumers and instead provides them with several valuable rights:

• Users of free and open-source software are permitted to use it for any purpose (except for those prohibited by law).
• Users and third-parties can independently study and inspect FOSS programs to verify the authenticity of claims regarding its privacy and security. By making the software transparent, it has the potential to be safer and more trustworthy.
• After obtaining copies of the source code, users can modify it to fit their needs. These modifications may include improvements on the original code or removals of existing features (e.g., those that invade privacy, create security vulnerabilities, or are simply unnecessary).
• Users of FOSS can choose to redistribute their software, modified or not, to other people without fee or for profit. The right to redistribution allows users to share their modifications and improvements with others.

Some FOSS licenses require that any redistribution of the software must also be licensed with the same license as the original software or at least be licensed in a way that does not revoke any of the rights granted by the original license. These licenses are known as copyleft licenses and are meant to guarantee that any modifications of FOSS remain part of the community as FOSS.

Example: The strongest copyleft license for FOSS is considered to be GNU Affero General Public License Version 3.0, or AGPLv3, because it requires that anyone who uses the software to provide a service over a network must also provide its complete source code, even if it's modified.

Standard Notes publishes the source code for its web, desktop, and mobile apps as well as its syncing server and extensions under AGPLv3. This means that any individual or company can legally use all our free and open-source software for their own commercial purposes and therefore potentially drive us out of business. However, the AGPLv3 license requires that they must also release their software under AGPLv3, so any improvements that they make to it ultimately return to the Standard Notes community. This means that if Standard Notes were to disappear for whatever reason, then the community would be able to maintain the service and your notes would continue to be safe.

Further reading:

Terms in this set (4)

1. Encryption. Process of converting readable data into unreadable characters to prevent unauthorized access.
2. Access rights. security option that determines the areas of the program a user can access, and whether the user has rights to enter or edit data.
3. anti-virus software.
4. Bio-metrics.

What is the process of converting readable?

Presentation transcript:

1. 2  Process of converting readable data into unreadable characters to prevent unauthorized access.
2. 3  Plaintext – data not yet encrypted  Ciphertext – data that has been encrypted  Encryption key – used to decrypt ciphertext into plaintext.

Is a process of converting from unreadable characters into readable form of data?

Data encryption is a method of converting data from a readable format (plaintext) into an unreadable, encoded format (ciphertext). Encrypted data at rest can be compromised, either by malware on a storage device, or by unauthorized users who gain access to user passwords or keys.

Which technique that convert data into unreadable form?

DATA ENCRYPTION converts the normal data into unreadable code.

Is a set of letters or numbers that represents a data item?

A schema is a set of letters or numbers that represents a data item. A secondary key is a field in one table that must match a primary key value in another table in order to establish the relationship between the two tables.

Is the process of converting encrypted information back into readable form?

Decryption is the process of converting an encrypted message back to its original (readable) format. The original message is called the plaintext message. The encrypted message is called the ciphertext message.

When plaintext get converted into non readable form is called?

Definition: Cipher is an algorithm which is applied to plain text to get ciphertext. It is the unreadable output of an encryption algorithm. Ciphertext is not understandable until it has been converted into plain text using a key. …

Is a set of steps that can convert readable plaintext into unreadable ciphertext?

Process of converting readable data into unreadable characters to prevent unauthorized access. Decryption….

What is the process of transforming data into unreadable code?

Encryption is the process of transforming readable text or data, called plaintext, into unreadable code called ciphertext. After the data is transformed, it is said to be encrypted.

What do you call the process of altering and changing a data into unreadable form to prevent unauthorized access?

What is Encryption

1. The process of masking information so that only authorized parties may view the true message or information.
2. It is used for security purpose in which a text is converted in to unreadable format by using some cryptographic technique.

How are codes used in data design?

Coding aids the systems analyst in reaching the objective of efficiency, because data that are coded require less time for people to enter, and thus reduce the number of items entered. Coding can also help in the appropriate sorting of data at a later point in the data transformation process.

Does not distract a user and calls no attention to itself?

A transparent interface does not distract a user and calls no attention to itself. A data type check is a data validation rule that is used when data must be in predetermined sequence. A combination check is a data validation rule that tests to ensure if a data item fits the required data type.

Is Ordinary readable text before being Encryted?

In cryptography, plaintext is ordinary readable text before being encrypted into ciphertext or after being decrypted.

Is a set of steps that converts readable text into unreadable text?

The process of converting data that is readable by humans into encoded characters to prevent unauthorized access. A set of steps that can convert readable plaintext into unreadable ciphertext. Also called cypher.

Which of the following is a technique intruders use to make their network or Internet transmission?

CH5 Cyber Security Vocab

Is the transformation of data into a form that is unreadable to anyone without an appropriate description ki?

DATA ENCRYPTION converts the normal data into unreadable code. The encrypted data is referred to as CIPHER TEXT. It cannot be read without DECRYPTION.

Which of the following technique is used to convert the data in unreadable form before transmitting?

The ciphertext is transmitted to the receiver. The receiver converts the ciphertext message back to its plaintext form. This part of the process is called decryption (sometimes decipherment )….Cryptography.

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