ISO/IEC 10181-4:1997 情報技術—オープンシステム相互接続—オープンシステムのセキュリティフレームワーク：否認防止フレームワーク—パート4： | ページ 6

3.4.1

compromised evidence

Evidence that was, at one time, satisfactory but which no longer has the confidence of the Trusted Third Party or adjudicator.

3.4.2

counter-signature

A digital signature appended to a data unit which has already been signed by a different entity (e.g. a TTP).

3.4.3

evidence

Information that, either by itself or when used in conjunction with other information, may be used to resolve a dispute.

3.4.4

evidence generator

An entity that produces Non-repudiation evidence.

Note 1 to entry: This entity may be the Non-repudiation service requester, the originator, the recipient or multiple parties working in conjunction (e.g. a signer and co-signer).

3.4.5

evidence subject

The entity whose involvement in an event or action is established by evidence.

3.4.6

evidence user

An entity that uses Non-repudiation evidence.

3.4.7

evidence verifier

An entity that verifies Non-repudiation evidence.

3.4.8

message authentication code

A cryptographic checkvalue that is used to provide data origin authentication and data integrity.

3.4.9

Non-repudiation service requester

An entity that requests that Non-repudiation evidence be generated for a particular event or action.

3.4.10

notary

A Trusted Third Party with whom data is registered so that later assurance of the accuracy of the characteristics of the data can be provided.

3.4.11

originator:

In the context of data transfer, an entity that originates the data in an action that is subject to a Non-repudiation service.

3.4.12

recipient:

In the context of data transfer, an entity that receives the data in an action that is subject to a Non-repudiation service.

Note 1 to entry: In the logical model of Non-repudiation, other entities may be considered. E.g. the owner is the entity that makes an original message and a transfer agent is the entity that transfers the message; in this context, entities are modeled as originators or recipients.