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  2. Chip Authentication Program - Wikipedia

    en.wikipedia.org/wiki/Chip_Authentication_Program

    Multiple data fields pertaining to the transaction are concatenated and then hashed with a Mode2 cryptogram as the key for the hashing algorithm. The resultant hash is used in place of the cryptogram calculated in a non-TDS Mode2 operation. Mode1 sounds very much like a specific use of Mode2 with TDS, but there is a critical difference.

  3. Cox Communications - Wikipedia

    en.wikipedia.org/wiki/Cox_Communications

    Cox Communications, Inc. (also known as Cox Cable and formerly Cox Broadcasting Corporation, Dimension Cable Services and Times-Mirror Cable) is an American digital cable television provider, telecommunications and home automation services.

  4. Application layer - Wikipedia

    en.wikipedia.org/wiki/Application_layer

    An application layer is an abstraction layer that specifies the shared communications protocols and interface methods used by hosts in a communications network. An application layer abstraction is specified in both the Internet Protocol Suite (TCP/IP) and the OSI model.

  5. AT&T - Wikipedia

    en.wikipedia.org/wiki/AT&T

    Please help update this article to reflect recent events or newly available information. ( June 2018 ) According to the Center for Responsive Politics , AT&T was the fourteenth-largest donor to United States federal political campaigns and committees from 1989 to 2019, [112] having contributed more than US$84.1 million , 58% of which went to ...