olemus
ISO/IEC 11770-3:
kinnitus olemile B, et olem A on ainus muu olem, kelle
valduses võib olla õige võti
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assurance for entity B that entity A is the only other entity that can possibly be in possession of the correct key

ülevaateid
https://link.springer.com/article/10.1007/s10207-015-0306-9
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https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=a25d245bc1a0bd9ee51fbd36ffb0c40fed82526e