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  2. Advanced electronic signature - Wikipedia

    en.wikipedia.org/wiki/Advanced_electronic_signature

    In the past, when signing a document or message, the signatory would sign it and then return it to its intended recipient through the postal service, via facsimile service, or by scanning and attaching it to an email. This could lead to delays and, of course, the possibility that signatures could be forged and documents altered, especially when ...

  3. Electronic signature - Wikipedia

    en.wikipedia.org/wiki/Electronic_signature

    An electronic signature, or e-signature, is data that is logically associated with other data and which is used by the signatory to sign the associated data. [1] [2] [3] This type of signature has the same legal standing as a handwritten signature as long as it adheres to the requirements of the specific regulation under which it was created (e.g., eIDAS in the European Union, NIST-DSS in the ...

  4. Server-based signatures - Wikipedia

    en.wikipedia.org/wiki/Server-based_signatures

    The second (message-dependent) phase is performed on-line and involves communication with a server. In the first (off-line) phase, the signer uses a conventional public-key digital signature scheme to sign a public key of the Lamport one-time signature scheme. In the second phase, a message is signed by using the Lamport signature scheme.

  5. Digital Signature Standard - Wikipedia

    en.wikipedia.org/wiki/Digital_Signature_Standard

    It defines the Digital Signature Algorithm, contains a definition of RSA signatures based on the definitions contained within PKCS #1 version 2.1 and in American National Standard X9.31 with some additional requirements, and contains a definition of the Elliptic Curve Digital Signature Algorithm based on the definition provided by American ...

  6. Indian Railway Stores Service - Wikipedia

    en.wikipedia.org/wiki/Indian_Railway_Stores_Service

    IRSS Officers man the senior posts of stores department and also general administrative posts of Indian Railways. [2] The members of this group A service are recruited through the Engineering Services Examination conducted annually by the Union Public Service Commission [3] [4] The basic qualification for appearing in this examination is a degree in engineering and all the members belonging to ...

  7. Digital Signature Algorithm - Wikipedia

    en.wikipedia.org/wiki/Digital_Signature_Algorithm

    The Digital Signature Algorithm (DSA) is a public-key cryptosystem and Federal Information Processing Standard for digital signatures, based on the mathematical concept of modular exponentiation and the discrete logarithm problem. In a public-key cryptosystem, a pair of private and public keys are created: data encrypted with either key can ...

  8. Digital signature - Wikipedia

    en.wikipedia.org/wiki/Digital_signature

    With a digital signature scheme, the central office can arrange beforehand to have a public key on file whose private key is known only to the branch office. The branch office can later sign a message and the central office can use the public key to verify the signed message was not a forgery before acting on it.

  9. Electronic authentication - Wikipedia

    en.wikipedia.org/wiki/Electronic_authentication

    Digital authentication, or e-authentication, may be used synonymously when referring to the authentication process that confirms or certifies a person's identity and works. When used in conjunction with an electronic signature , it can provide evidence of whether data received has been tampered with after being signed by its original sender.