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  2. X.509 - Wikipedia

    en.wikipedia.org/wiki/X.509

    In cryptography, X.509 is an International Telecommunication Union (ITU) standard defining the format of public key certificates. [1] X.509 certificates are used in many Internet protocols, including TLS/SSL, which is the basis for HTTPS, [2] the secure protocol for browsing the web.

  3. Wikipedia:Database download - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Database_download

    There are two limits for a file system: the file system size limit, and the file system limit. In general, since the file size limit is less than the file system limit, the larger file system limits are a moot point. A large percentage of users assume they can create files up to the size of their storage device, but are wrong in their assumption.

  4. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    PDF 2.0 defines 256-bit AES encryption as the standard for PDF 2.0 files. The PDF Reference also defines ways that third parties can define their own encryption systems for PDF. PDF files may be digitally signed, to provide secure authentication; complete details on implementing digital signatures in PDF are provided in ISO 32000-2.

  5. Card Verifiable Certificate - Wikipedia

    en.wikipedia.org/wiki/Card_Verifiable_Certificate

    Card Verifiable Certificates (CVC) are digital certificates that are designed to be processed by devices with limited computing power such as smart cards. This is achieved by using simple type–length–value (TLV) encoding with fixed fields. Fixed fields means that each field in the certificate is of fixed, or maximum, length and each field ...

  6. ISO 216 - Wikipedia

    en.wikipedia.org/wiki/ISO_216

    Hence, each next size is nearly exactly half the area of the prior size. So, an A1 page can fit two A2 pages inside the same area. The most used of this series is the size A4, which is 210 mm × 297 mm (8.27 in × 11.7 in) and thus almost exactly 1 ⁄ 16 square metre (0.0625 m 2 ; 96.8752 sq in) in area.

  7. Download and install the AOL app on Android

    help.aol.com/articles/download-and-install-the...

    Learn more about the AOL app and download it from Google Play. The AOL app is available for Android devices running Android 9.0 or newer. Open the Google Play Store on your device. Type "AOL" in the search field. Choose AOL - News, Mail & Video from the search results. Tap Install. Tap Open. If you're unable to update the AOL app, use the ...

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  9. Qualifications and Credit Framework - Wikipedia

    en.wikipedia.org/wiki/Qualifications_and_Credit...

    The title of each qualification within this framework contains details of the size (award/certificate/diploma), level of difficulty (Entry to Level 8) and the general content of the qualification. The QCF is a national framework, referenced to the European Qualifications Framework (EQF). The EQF is a meta-framework intended as a reference so ...