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  2. 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.

  3. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    A PDF file is often a combination of vector graphics, text, and bitmap graphics. The basic types of content in a PDF are: Typeset text stored as content streams (i.e., not encoded in plain text ); Vector graphics for illustrations and designs that consist of shapes and lines;

  4. 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.

  5. Adobe Sign - Wikipedia

    en.wikipedia.org/wiki/Adobe_Sign

    Website. adobesign .com. Adobe Acrobat Sign (formerly EchoSign, eSign & Adobe Sign) is a cloud-based e-signature service that allows the user to send, sign, track, and manage signature processes using a browser or mobile device. [ 4] It is part of the Adobe Document Cloud suite of services. Adobe Sign also supports Sandbox environment for ...

  6. Advanced electronic signature - Wikipedia

    en.wikipedia.org/wiki/Advanced_electronic_signature

    The advanced electronic signature is one of the standards outlined in eIDAS. For an electronic signature to be considered as advanced it must meet several requirements: [ 3][ 4] The signatory can be uniquely identified and linked to the signature. The signatory must have sole control of the signature creation data (typically a private key) that ...

  7. Code signing - Wikipedia

    en.wikipedia.org/wiki/Code_signing

    Code signing. Code signing is the process of digitally signing executables and scripts to confirm the software author and guarantee that the code has not been altered or corrupted since it was signed. The process employs the use of a cryptographic hash to validate authenticity and integrity. [ 1] Code signing was invented in 1995 by Michael ...

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