Text Encryption And Decryption Project In Java

What is plain text The Linux Information Project LINFOPlain text refers to any string i. A character is any letter, symbol or mark employed in writing or printing a written language i. The characters used to write the English language are the 2. English alphabet, the Arabic numerals, punctuation marks and a variety of other symbols e. An alphabet is the ordered, standardized set of letters that is used to write or print a written language. Text Encryption And Decryption Project In Java' title='Text Encryption And Decryption Project In Java' />This reference guide is a work in progress. The source for this guide can be found in the srcmainasciidoc directory of the HBase source. This reference guide is. VM1407 Configure and Administer vRealize Business Standards and Application Services. Plain text usually refers to text that consists entirely of the ASCII printable characters and a few of its control characters. ASCII, an acronym for American standard code for information interchange, is based on the characters used to write the English language as it is used in the U. Decrypt.jpg' alt='Text Encryption And Decryption Project In Java' title='Text Encryption And Decryption Project In Java' />S. It is the de facto standard for the character encoding i. The term printable characters refers to the 9. ASCII characters inclusive of the space character, which occupies a single space that are actually human readable when displayed on a computer screen or when printed on paper. ASCII also contains a substantial number of non printable characters i. ASCII. It does not contain any characters that represent the formatting of text, such as those that indicate the typeface, the font, underlining, margins, etc. A typeface is a specific design for the entire set of characters that is used to write a language or languages. Among the most popular of the thousands that are available for the English language are Helvetica, Times Roman and Courier. Each typeface contains numerous fonts. Hp 2009M Monitor Driver Windows 10 more. A font is an implementation of a typeface for a specific size and style e. Plain text can also be defined in terms of other character encoding systems. For example, plain Unicode text is a sequence of Unicode characters. Unicode is a newer system that attempts to provide a unique encoding for every character used by the worlds languages and which incorporates ASCII as a subset. Thus, plain Unicode text could include human readable characters from almost any language or combination thereof e. Chinese, Russian and English characters as might be used in a trilingual dictionary. Source code i. e., the original form of any computer program is typed into a computer in ASCII plain text by humans using any of thousands programming languages among the most common of which are C, C and Java. When the source code files have been converted into object code by a compiler, they are no longer plain text, but rather binary files. A binary file is a file that can be directly read by a computers CPU central processing unit it contains at least some data that is not plain text and is thus generally not readable by humans. The only formatting possible for plain text is that which can be created with the space, tab and new line characters. Thus, for example, new lines and new paragraphs can be created, and vertical spaces can be added between lines and between paragraphs. There is no variation in the typeface or font, no underlining, no italic or bold characters and no superscripts or subscripts. Likewise, plain text does not contain any images or hyperlinks i. However, plain text can contain instructions that are written in plain text for formatting, for adding images, for creating hyperlinks, etc. That is, it can contain tags i. HTML hypertext markup language and XML extensible markup language are good examples of the use of instructions that 1 are used to convert plain text into some form of formatted text, 2 are written in plain text and 3 are embedded in the plain text documents that they are used to format. For example, the HTML tags lt b and lt b, although written in plain text, instruct any web browser that reads a file containing them to render i. Among the many other things that HTML can tell browsers are where to create hyperlinks, how to set margins, which images to use and where to insert them, which typefaces and fonts to use and where to render text in italics or underlined characters. Rich text, also referred to as styled text, consists of plain text plus additional information in binary format, such as about fonts, language identifiers and margins. Plain text should not be confused with plaintext a single word instead of two. The latter is a term used in cryptography i. Important Advantages. Plain text offers some important advantages over other ways of storing and manipulating data. They revolve around the fact that it is the most flexible and portable format for data. That is, everything can be done with plain text that could be done with any binary format, and some things can be done with plain text that cannot easily if at all be done with some binary formats. This is because plain text is supported by nearly every application program on every operating system and on every type of CPU and allows information to be manipulated including, searching, sorting and updating both manually and programmatically using virtually every text processing tool in existence. This flexibility and portability make plain text the best format for storing data persistently i. That is, plain text provides insurance against the obsolescence of any application programs that are needed to create, read, modify and extend data. Human readable forms of data including data in self describing formats such as HTML and XML will most likely survive longer than all other forms of data and the application programs that created them. In other words, as long as the data itself survives, it will be possible to use it even if the original application programs have long since vanished. For example, it is very easy to read a data file from a legacy system i. If it is written in some binary format, such as by a proprietary i. Plain text is not necessarily unstructured text. Programming languages as well as SGML standard generalized markup language and its modern descendants, most notably HTML hypertext markup language and XML extensible markup language, are examples of plain text formats that have well defined structures. These formats have the important advantage of making plain text easier for computers to read, reorganize and modify while keeping it relatively readable by humans. Plain Text and the Unix Philosophy. The use of plain text is an important part of the Unix philosophy, and thus of the Linux philosophy which incorporates the Unix philosophy. Consequently, in contrast to other types of operating systems, Linux and other Unix like operating systems attempt to use plain text as much as possible and to minimize the use of binary code. For example, programs are designed to produce plain text output to the extent practical. An obvious example of a type of program whose primary output cannot be plain text is a compiler, because its purpose is to translate plain text i. CPU. All filters use plain text input and produce plain text output. Filters, which are among the most important programs in Unix like operating systems, are small and usually specialized programs that transform plain text data in some meaningful way. They are designed to be linked together using pipes represented in commands by the vertical bar character to form pipelines of commands that can have great power and flexibility. Also, Unix like operating systems use plain text files i. A major advantage of this approach is ease of access and modification, which can be particularly useful when repairing a crashed or otherwise damaged system.