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  2. Public-key cryptography - Wikipedia

    en.wikipedia.org/wiki/Public-key_cryptography

    Public-key cryptography. An unpredictable (typically large and random) number is used to begin generation of an acceptable pair of keys suitable for use by an asymmetric key algorithm. In an asymmetric key encryption scheme, anyone can encrypt messages using a public key, but only the holder of the paired private key can decrypt such a message.

  3. Object-oriented programming - Wikipedia

    en.wikipedia.org/wiki/Object-oriented_programming

    Focused on software quality, Eiffel is a purely object-oriented programming language and a notation supporting the entire software lifecycle. Meyer described the Eiffel software development method, based on a small number of key ideas from software engineering and computer science, in Object-Oriented Software Construction. [18]

  4. Substitution cipher - Wikipedia

    en.wikipedia.org/wiki/Substitution_cipher

    t. e. In cryptography, a substitution cipher is a method of encrypting in which units of plaintext are replaced with the ciphertext, in a defined manner, with the help of a key; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth. The receiver deciphers the text by ...

  5. Metadata - Wikipedia

    en.wikipedia.org/wiki/Metadata

    Metadata means "data about data". Metadata is defined as the data providing information about one or more aspects of the data; it is used to summarize basic information about data that can make tracking and working with specific data easier. [ 14] Some examples include: Means of creation of the data.

  6. Key (cryptography) - Wikipedia

    en.wikipedia.org/wiki/Key_(cryptography)

    Key (cryptography) A key in cryptography is a piece of information, usually a string of numbers or letters that are stored in a file, which, when processed through a cryptographic algorithm, can encode or decode cryptographic data. Based on the used method, the key can be different sizes and varieties, but in all cases, the strength of the ...

  7. Encapsulation (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Encapsulation_(computer...

    Encapsulation (computer programming) In software systems, encapsulation refers to the bundling of data with the mechanisms or methods that operate on the data. It may also refer to the limiting of direct access to some of that data, such as an object's components. [ 1] Essentially, encapsulation prevents external code from being concerned with ...

  8. Amazon (company) - Wikipedia

    en.wikipedia.org/wiki/Amazon_(company)

    Junglee started as a virtual database that was used to extract information from the Internet and deliver it to enterprise applications. As it progressed, Junglee started to use its database technology to create a single window marketplace on the Internet by making every item from every supplier available for purchase.

  9. Key size - Wikipedia

    en.wikipedia.org/wiki/Key_size

    Key size. In cryptography, key size or key length refers to the number of bits in a key used by a cryptographic algorithm (such as a cipher ). Key length defines the upper-bound on an algorithm's security (i.e. a logarithmic measure of the fastest known attack against an algorithm), because the security of all algorithms can be violated by ...