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NIST SP 800-57 Part 2 Rev.1:
a service that provides confidentiality, integrity, source authentication, entity authentication, non-repudiation support, access control and availability (e.g., encryption and decryption, and digital signature generation and verification)

näiteid
https://www.informit.com/articles/article.aspx?p=170967&seqNum=2
https://www.commoncriteriaportal.org/files/ppfiles/pp0104b_pdf.pdf
https://www.scitepress.org/papers/2017/64666/64666.pdf