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  2. Digital Postmarks - Wikipedia

    en.wikipedia.org/wiki/Digital_Postmarks

    A Digital Postmark (DPM) is a technology that applies a trusted time stamp issued by a postal operator to an electronic document, validates electronic signatures, and stores and archives all non-repudiation data needed to support a potential court challenge. It guarantees the certainty of date and time of the postmarking.

  3. Digital signature - Wikipedia

    en.wikipedia.org/wiki/Digital_signature

    The first widely marketed software package to offer digital signature was Lotus Notes 1.0, released in 1989, which used the RSA algorithm. [26] Other digital signature schemes were soon developed after RSA, the earliest being Lamport signatures, [27] Merkle signatures (also known as "Merkle trees" or simply "Hash trees"), [28] and Rabin ...

  4. Trusted timestamping - Wikipedia

    en.wikipedia.org/wiki/Trusted_timestamping

    The technique is based on digital signatures and hash functions. First a hash is calculated from the data. A hash is a sort of digital fingerprint of the original data: a string of bits that is practically impossible to duplicate with any other set of data. If the original data is changed then this will result in a completely different hash.

  5. DigiDoc - Wikipedia

    en.wikipedia.org/wiki/DigiDoc

    DigiDoc (Digital Document) is a family of digital signature- and cryptographic computing file formats utilizing a public key infrastructure.It currently has three generations of sub formats, DDOC- , a later binary based BDOC and currently used ASiC-E format that is supposed to replace the previous generation formats.

  6. ARX (company) - Wikipedia

    en.wikipedia.org/wiki/ARX_(company)

    ARX (Algorithmic Research Ltd.) is a digital security company headquartered in San Francisco, CA, with offices in the UK, the Netherlands, Australia and Israel.It is the creator of ARX CoSign, a digital signature technology, along with related digital signature security technology products.

  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. SEC lawyers exempt from Trump list demand in possible firing ...

    www.aol.com/news/sec-lawyers-exempt-trump-list...

    NEW YORK (Reuters) -U.S. Securities and Exchange Commission lawyers may be exempt from a demand by the Trump administration asking for a list of staff who are still on probation, according to a ...

  9. Docusign - Wikipedia

    en.wikipedia.org/wiki/Docusign

    Docusign Professional emails recipients an electronically signed document requesting review of a document after it is uploaded. Each party must agree to complete business electronically, review the document, and apply a signature. Signatures may be added from a stored copy of a signature or generated automatically by the software.

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