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digital signature

noun, Digital Technology
1.
an encrypted digital code appended to an electronic document to verify that it was created by a known source and has not been altered.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for digital-signature

digital signature

noun
1.
(computing) electronic proof of a person's identity involving the use of encryption; used to authenticate documents
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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