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  2. Signature block - Wikipedia

    en.wikipedia.org/wiki/Signature_block

    An email signature block example, using a female variant of the Alan Smithee pseudonym.. A signature block (often abbreviated as signature, sig block, sig file, .sig, dot sig, siggy, or just sig) is a personalized block of text automatically appended at the bottom of an email message, Usenet article, or forum post.

  3. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    List of file signatures. This is a list of file signatures, data used to identify or verify the content of a file. Such signatures are also known as magic numbers or Magic Bytes. Many file formats are not intended to be read as text. If such a file is accidentally viewed as a text file, its contents will be unintelligible.

  4. Digital signature - Wikipedia

    en.wikipedia.org/wiki/Digital_signature

    Definition. A digital signature scheme typically consists of three algorithms: A key generation algorithm that selects a private key uniformly at random from a set of possible private keys. The algorithm outputs the private key and a corresponding public key. A signing algorithm that, given a message and a private key, produces a signature.

  5. Add, edit, or disable your signature in AOL Mail

    help.aol.com/articles/add-edit-or-disable-your...

    This feature ensures all your AOL messages maintain a consistent, professional look with minimal effort. 1. Click the Settings Menu icon | select More Settings . 2. Click Writing email. 3. Click the Toggle button to enable or disable a signature for your email address. 4. Enter or edit your signature in the text box.

  6. File:Joe Biden signature.svg - Wikipedia

    en.wikipedia.org/wiki/File:Joe_Biden_signature.svg

    File:Joe Biden signature.svg. Size of this PNG preview of this SVG file: 220 × 94 pixels. Other resolutions: 320 × 137 pixels | 640 × 273 pixels | 1,024 × 438 pixels | 1,280 × 547 pixels | 2,560 × 1,094 pixels. Original file ‎ (SVG file, nominally 220 × 94 pixels, file size: 3 KB) This is a file from the Wikimedia Commons.

  7. Secure Hash Algorithms - Wikipedia

    en.wikipedia.org/wiki/Secure_Hash_Algorithms

    This was designed by the National Security Agency (NSA) to be part of the Digital Signature Algorithm. Cryptographic weaknesses were discovered in SHA-1, and the standard was no longer approved for most cryptographic uses after 2010. SHA-2: A family of two similar hash functions, with different block sizes, known as SHA-256 and SHA-512. They ...

  8. 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.

  9. Public-key cryptography - Wikipedia

    en.wikipedia.org/wiki/Public-key_cryptography

    For example, a software publisher can create a signature key pair and include the public key in software installed on computers. Later, the publisher can distribute an update to the software signed using the private key, and any computer receiving an update can confirm it is genuine by verifying the signature using the public key.

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