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2. List of file signatures - Wikipedia

   en.wikipedia.org/wiki/List_of_file_signatures

   However, some file signatures can be recognizable when interpreted as text. The column ISO 8859-1 shows how the file signature appears when interpreted as text in the common ISO 8859-1 encoding, with unprintable characters represented as the control code abbreviation or symbol, or codepage 1252 character where available, or a box otherwise. In ...

3. Message authentication code - Wikipedia

   en.wikipedia.org/wiki/Message_authentication_code

   Formally, a message authentication code (MAC) system is a triple of efficient [4] algorithms (G, S, V) satisfying: G (key-generator) gives the key k on input 1 n, where n is the security parameter. S (signing) outputs a tag t on the key k and the input string x. V (verifying) outputs accepted or rejected on inputs: the key k, the string x and ...

4. Non-repudiation - Wikipedia

   en.wikipedia.org/wiki/Non-repudiation

   The difference between MAC and Digital Signatures, one uses symmetric keys and the other asymmetric keys (provided by the CA). Note that the goal is not to achieve confidentiality: in both cases (MAC or digital signature), one simply appends a tag to the otherwise plaintext, visible message.

5. Signature - Wikipedia

   en.wikipedia.org/wiki/Signature

   A signature (/ ˈsɪɡnɪtʃər, ˈsɪɡnətʃər /; from Latin: signare, "to sign") is a depiction of someone's name, nickname, or even a simple "X" or other mark that a person writes on documents as a proof of identity and intent. Signatures are often, but not always, handwritten or stylized. The writer of a signature is a signatory or signer.

6. Pages (word processor) - Wikipedia

   en.wikipedia.org/wiki/Pages_(word_processor)

   The "Full Screen" mode (introduced in Mac OS X Lion) and supported in Pages 4.1 hid the menubar and toolbars, allowing users to focus on a single document without being distracted by other windows on the screen; [5] however, after Pages 5, full-screen mode requires the user to manually hide various panes for focused writing and the page ...

7. Certificate signing request - Wikipedia

   en.wikipedia.org/wiki/Certificate_signing_request

   In public key infrastructure (PKI) systems, a certificate signing request (CSR or certification request) is a message sent from an applicant to a certificate authority of the public key infrastructure (PKI) in order to apply for a digital identity certificate. The CSR usually contains the public key for which the certificate should be issued ...