Non-repudiation

According to Baker and Cooper (1995), nonrepudiation functions provide evidence that a transaction or specific action actually happened. An example is a system taking measures to ensure that a transferred message has been sent and received by the parties claiming to have sent and received the message. It is a way to guarantee that the sender of a message cannot later deny having sent the message and that the recipient cannot deny having received the message.

Non-repudiation is accomplished through functions such as electronic signatures, transmission encryption, or time stamping and transaction recording in an audit trail record (Maheu, et. al., 2001).

References

1. Baker, D. B., & Cooper, T. (1995). Information system security issues for health care. Manuscript in preparation, Science Applications International Corp. and Kaiser Permanente.
2. Maheu, M., Whitten, P., and Allen, A. (2001) E-Health, Telehealth, and Telemedicine: A Guide to Startup and Success. San Francisco: Jossey-Bass, p.120.