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Definitions and Terminology
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Digital signature
Data appended to, or a cryptographic transformation of, a data unit that allows the recipient of the data unit to prove the source and integrity of the data unit and protect against forgery e.g. by the recipient.
source: ISO13888-1, 2004
A cryptographic transformation of a data unit that allows a recipient of the data unit to prove the origin and integrity of the data unit and protect the sender and the recipient of the data unit against forgery by third parties, and the sender against forgery by the recipient. NOTE – Digital signatures may be used by end entities (see below) for the purposes of authentication, of data integrity, and of non-repudiation of creation of data. The usage for non-repudiation of creation of data is the most important one for legally binding digital signatures. The definition above is taken from ISO/IEC 9798-1.
source: ISO15945, 2002
data appended to, or a cryptographic transformation of, a data unit that allows the recipient of the data unit to prove the origin and integrity of the data unit and protect against forgery, e.g. by the recipient [ISO/IEC 11770-1:1996].
source: ISO15946-3, 2002
data appended to, or a cryptographic transformation of a data unit that allows the recipient of the data unit to prove the origin and integrity of the data unit and protect against forgery (e.g., by the recipient)
source: ISO19790, 2006
data appended to, or a cryptographic transformation of, a data unit that allows the recipient of the data unit to prove the source and integrity of the data unit and protect against forgery e.g. by the recipient.
source: ISO9798-1, 1997
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