non-repudiation of origin
Technical computing term: a property that ensures the originator of a message or data cannot deny having created it. Used in security protocols and digital signatures.
Digital signatures provide non-repudiation of origin.
このプロトコルは発生源の否認不能を保証する。
This protocol guarantees non-repudiation of origin.
否認 means 'denial' or 'repudiation' in general; 発生源の否認不能 is a specific compound term for 'non-repudiation of origin' in computing.
否認不能 is the broader term 'non-repudiation'; 発生源の否認不能 specifies that it applies to the origin of data.
Compound of 発生源 (origin) + の (possessive particle) + 否認不能 (non-repudiation). A technical translation of the English computing term 'non-repudiation of origin'.