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  2. Adobe Sign - Wikipedia

    en.wikipedia.org/wiki/Adobe_Sign

    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.

  3. Content Authenticity Initiative - Wikipedia

    en.wikipedia.org/wiki/Content_Authenticity...

    To make sure that the C2PA metadata can not be changed unnoticed, it is secured with hashcodes and certified digital signatures. The same applies to main content of the information, such as a picture or a text. A hash code of that data is stored in the C2PA metadata section and then, as part of that metadata, secured with the digital signature.

  4. Digital signature - Wikipedia

    en.wikipedia.org/wiki/Digital_signature

    A digital signature is a mathematical scheme for verifying the authenticity of digital messages or documents. A valid digital signature on a message gives a recipient confidence that the message came from a sender known to the recipient. [1] [2]

  5. Qualified electronic signature - Wikipedia

    en.wikipedia.org/wiki/Qualified_electronic_signature

    The qualified electronic signature is one such standard that has been outlined under eIDAS. [3] [4] A qualified electronic signature is an advanced electronic signature with a qualified digital certificate that has been created by a qualified signature creation device (QSCD). For an electronic signature to be considered as a qualified ...

  6. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    For example, Adobe Systems grants permissions to enable additional features in Adobe Reader, using public-key cryptography. Adobe Reader verifies that the signature uses a certificate from an Adobe-authorized certificate authority. Any PDF application can use this same mechanism for its own purposes. [37]

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

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