List = Ī tuple is dynamic data type of Python which consists of number of values separated by commas. The lists of python can be declared as compound data types, separated by commas and enclosed within square brackets (). The basic declaration of strings is shown below −
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The download link for Python language is as follows − includes packages for various operating systems like Windows, MacOS and Linux distributions. Python includes a feature of integration with C, C++ and languages like Java. It includes high-level dynamic data types and supports various dynamic type checking. It includes automatic garbage collection. It can be used as a scripting language or as a programming language. It includes functional and structured programming and methods as well as object oriented programming methods. The key points of Python programming language are as follows − It includes class definition with various features like encapsulation and polymorphism. Python follows object-oriented style and design patterns. There is no need to compile a program before execution. Python is processed at runtime using the interpreter. Python provides the following major features − Interpreted The syntax of Python language is easy to understand and uses English keywords frequently. Python is an open source scripting language which is high-level, interpreted, interactive and object-oriented. The receiver after receiving the message decrypts the message using secret key first, using his/her own private key and then uses the specified key to decrypt the message. There is one common approach which is usually followed to generate a random secret key for a symmetric cipher and then encrypt this key via asymmetric key cryptography.ĭue to this pattern, the original message itself is encrypted using the symmetric cipher and then using secret key.
Hybrid cryptography is the process of using multiple ciphers of different types together by including benefits of each of the cipher. The following diagram shows double encryption process pictorially − Hybrid Cryptography In this process, the encrypted capsule is transmitted via SSL/TLS connection to the communication partner. Usually, a 32-bit character long symmetric password is used for the same. Second layer of encryption is the process of adding one more layer to cipher text with same or different algorithm. The receiver will compute the digest first and later decrypt the text in order to verify that text is not tampered in between. The best illustration for this pattern is combining the hash digest of the cipher text into a capsule. Later symmetric keys are encrypted with the help of asymmetric keys. The cipher text is generated from the original readable message using hash algorithms and symmetric keys. Levels of Double Strength Encryptionĭouble strength encryption includes various levels of encryption that are explained here under − First layer of encryption The other names for double strength encryption include cascade encryption or cascade ciphering. It requires parties interested in secure communication channel to achieve privacy.ĭouble strength encryption, also called as multiple encryption, is the process of encrypting an already encrypted text one or more times, either with the same or different algorithm/pattern. It uses mathematical algorithms for securing the information. The basic characteristics of modern cryptography are as follows − The diagram given below shows an illustration of the complete process of cryptography − Characteristics of Modern Cryptography The process of converting cipher text to plain text is called decryption. The process of converting plain text to cipher text is called encryption. Cipher TextĬipher text is the message obtained after applying cryptography on plain text. The plain text is the message which undergoes cryptography. The plain text message is the text which is readable and can be understood by all users. The frequently used terms in cryptography are explained here − Plain Text The science of cryptography emerged with the basic motive of providing security to the confidential messages transferred from one party to another.Ĭryptography is defined as the art and science of concealing the message to introduce privacy and secrecy as recognized in information security.
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