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  2. PKCS 7 - Wikipedia

    en.wikipedia.org/wiki/PKCS_7

    Container for. X.509 public key certificates, X.509 CRLs. In cryptography, PKCS #7 ("PKCS #7: Cryptographic Message Syntax", "CMS") is a standard syntax for storing signed and/or encrypted data. PKCS #7 is one of the family of standards called Public-Key Cryptography Standards ( PKCS) created by RSA Laboratories .

  3. mcrypt - Wikipedia

    en.wikipedia.org/wiki/Mcrypt

    mcrypt is a replacement for the popular Unix crypt command. crypt was a file encryption tool that used an algorithm very close to the World War II Enigma cipher. Mcrypt provides the same functionality but uses several modern algorithms such as AES. Libmcrypt, Mcrypt's companion, is a library of code that contains the actual encryption functions ...

  4. Pythagorean theorem - Wikipedia

    en.wikipedia.org/wiki/Pythagorean_theorem

    In mathematics, the Pythagorean theorem or Pythagoras' theorem is a fundamental relation in Euclidean geometry between the three sides of a right triangle. It states that the area of the square whose side is the hypotenuse (the side opposite the right angle) is equal to the sum of the areas of the squares on the other two sides.

  5. Open sesame - Wikipedia

    en.wikipedia.org/wiki/Open_sesame

    Open sesame. Ali Baba overhearing one of the thieves saying "Open Sesame". " Open sesame " ( French: Sésame, ouvre-toi; Arabic: افتح يا سمسم, romanized : iftaḥ yā simsim) is a magical phrase in the story of "Ali Baba and the Forty Thieves" in Antoine Galland 's version of One Thousand and One Nights. It opens the mouth of a cave ...

  6. Linux Unified Key Setup - Wikipedia

    en.wikipedia.org/wiki/Linux_Unified_Key_Setup

    The Linux Unified Key Setup ( LUKS) is a disk encryption specification created by Clemens Fruhwirth in 2004 and originally intended for Linux . LUKS implements a platform-independent standard on-disk format for use in various tools. This facilitates compatibility and interoperability among different programs and operating systems, and assures ...

  7. Freedom of speech - Wikipedia

    en.wikipedia.org/wiki/Freedom_of_speech

    For example, in Austria, defaming Muhammad, the prophet of Islam, is not protected as free speech. In contrast, in France, blasphemy and disparagement of Muhammad are protected under free speech law. Certain public institutions may also enact policies restricting the freedom of speech, for example, speech codes at state-operated schools.

  8. Opportunity cost - Wikipedia

    en.wikipedia.org/wiki/Opportunity_cost

    Opportunity cost at a government level example. Another example of opportunity cost at government level is the effects of the Covid-19 pandemic. Governmental responses to the COVID-19 epidemic have resulted in considerable economic and social consequences, both implicit and apparent.

  9. List of trigonometric identities - Wikipedia

    en.wikipedia.org/wiki/List_of_trigonometric...

    de Moivre. Euler. Fourier. v. t. e. In trigonometry, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables for which both sides of the equality are defined. Geometrically, these are identities involving certain functions of one or more angles.