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--- dido:public:ra:xapend:xapend.a_glossary:d:digital_signature [2021/08/05 14:51]
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+++ dido:public:ra:xapend:xapend.a_glossary:d:digital_signature [2022/01/18 08:16] (current)
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 ===== Digital Signature =====
-[[dido:public:ra:xapend:xapend.a_glossary| Return to Glossary ]]
+[[dido:public:ra:xapend:xapend.a_glossary:start| Return to Glossary ]]
+==== Definition 1:====
+A **Digital Signature** according to NIST((
+Elaine Barker,
+NIST,
+__Recommendation for Key Management: Part 1 - General__,
+NIST Special Publication 800-57 Part 1, Revision 5,
+May 2020,
+Accessed 18 January 2022,
+[[https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-57pt1r5.pdf]]
+)) is the result of a cryptographic transformation of data that, when properly
+implemented with a supporting infrastructure and policy, provides the
+services of:
+  - Source/identity authentication,
+  - Data integrity authentication, and/or
+  - Support for signer non-repudiation.
+==== Definition 2 ====
 A **Digital Signature** is a mathematical technique used to validate the authenticity and integrity of a message, software or digital document. It's the digital equivalent of a handwritten signature or stamped seal, but it offers far more inherent security. A digital signature is intended to solve the problem of tampering and impersonation in digital communications.

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