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  2. S/MIME - Wikipedia

    en.wikipedia.org/wiki/S/MIME

    S/MIME. S/MIME ( Secure/Multipurpose Internet Mail Extensions) is a standard for public-key encryption and signing of MIME data. S/MIME is on an IETF standards track and defined in a number of documents, most importantly RFC 8551. It was originally developed by RSA Data Security, and the original specification used the IETF MIME specification ...

  3. List of archive formats - Wikipedia

    en.wikipedia.org/wiki/List_of_archive_formats

    File extension(s) MIME type Official name Platform Description .br application/x-brotli Brotli: all Brotli is a compression algorithm developed by Google for textual web content, and typically achieves higher compression ratios than other algorithms for this use case.

  4. apk (file format) - Wikipedia

    en.wikipedia.org/wiki/Apk_(file_format)

    The Android Package with the file extension apk [1] is the file format used by the Android operating system, and a number of other Android-based operating systems for distribution and installation of mobile apps, mobile games and middleware. A file using this format can be built from source code written in either Java or Kotlin .

  5. 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. They are also used in offline applications, like electronic ...

  6. Media type - Wikipedia

    en.wikipedia.org/wiki/Media_type

    Media type. A media type (formerly known as a MIME type) [1] is a two-part identifier for file formats and format contents transmitted on the Internet. Their purpose is somewhat similar to file extensions in that they identify the intended data format. The Internet Assigned Numbers Authority (IANA) is the official authority for the ...

  7. M3U - Wikipedia

    en.wikipedia.org/wiki/M3U

    M3U ( MP3 URL [1] [2] or Moving Picture Experts Group Audio Layer 3 Uniform Resource Locator [3] in full) is a computer file format for a multimedia playlist. One common use of the M3U file format is creating a single-entry playlist file pointing to a stream on the Internet. The created file provides easy access to that stream and is often used ...

  8. Email - Wikipedia

    en.wikipedia.org/wiki/Email

    The basic Internet message format used for email is defined by RFC 5322, with encoding of non-ASCII data and multimedia content attachments defined in RFC 2045 through RFC 2049, collectively called Multipurpose Internet Mail Extensions or MIME. The extensions in International email apply only to email. RFC 5322 replaced the earlier RFC 2822 in ...

  9. iCalendar - Wikipedia

    en.wikipedia.org/wiki/ICalendar

    The Internet Calendaring and Scheduling Core Object Specification ( iCalendar) is a media type which allows users to store and exchange calendaring and scheduling information such as events, to-dos, journal entries, and free/busy information, [1] and together with its associated standards has been a cornerstone of the standardization and ...