Changing traffic encryption key or transmission security key in remote cryptographic equipment by sending new key directly to the remote cryptographic equipment over the communications path it secures.
What does OTAR mean?
The term Over-the-Air Rekeying (OTAR) refers to a method of changing cryptographic keys remotely by transmitting new keying material over a communications link rather than physically loading it at the device. It gives election, security, legal, or technical readers a specific label for the concept rather than a broader everyday meaning.
How is Over-the-Air rekeying (OTAR) used in cryptography or COMSEC?
In practice, Over-the-Air Rekeying (OTAR) is applied to the technical or security purpose captured by its definition: a method of changing cryptographic keys remotely by transmitting new keying material over a communications link rather than physically loading it at the device. Organizations combine that function with documented procedures, authorized access, testing, monitoring, and controls appropriate to the system.
Why does Over-the-Air rekeying (OTAR) need security controls?
Understanding Over-the-Air Rekeying (OTAR) matters because the concept can affect security, reliability, auditability, or trusted operation. In this glossary context, it refers to a method of changing cryptographic keys remotely by transmitting new keying material over a communications link rather than physically loading it at the device.
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Changing traffic encryption key or transmission security key in remote cryptographic equipment by sending new key directly to the remote cryptographic equipment over the communications path it secures.
Cite this term
Election Security Glossary. (2026). Over The Air Rekeying (OTAR). In Election Security Glossary. Retrieved September 3, 2026, from https://electionsecurityglossary.com/glossary/over-the-air-rekeying-otar
Sources
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High consensus
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Multi-source
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