olemus
ISO/IEC 11770-1:
võtme edastamine ühelt olemilt teisele, sobivalt kaitstuna
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process of transferring a key from one entity to another entity, suitably protected

NIST SP 800-57 Part 2 Rev.1:
The transport of key information from one entity (the sender) to one or more other entities (the receivers). The sender may have generated the key information or acquired it from another source as part of a separate process. The key information may be distributed manually or using automated key transport mechanisms.

vt ka
https://en.wikipedia.org/wiki/Category:Key_transport_protocols