Systems and methods for secure operation of an industrial controller
First Claim
1. A method of securing an industrial control system, comprising:
- operating the industrial control system in an open mode, wherein communications between a plurality of devices of the industrial control system are unencrypted when the industrial control system is in the open mode;
exchanging security tokens between the plurality of devices of the industrial control system; and
ceasing operating the industrial control system in the open mode and instead operating the industrial control system in a secure mode, wherein the communications between the plurality of devices of the industrial control system are encrypted using the security tokens when the industrial control system is operating in the secure mode.
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Abstract
A method of securing an industrial control system includes operating the industrial control system in an open mode, wherein communications between a plurality of devices of the industrial control system are unencrypted when the industrial control system is in the open mode. The method includes exchanging security tokens between the plurality of devices of the industrial control system. The method further includes ceasing operating the industrial control system in the open mode and instead operating the industrial control system in a secure mode, wherein the communications between the plurality of devices of the industrial control system are encrypted using the security tokens when the industrial control system is operating in the secure mode.
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Citations
23 Claims
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1. A method of securing an industrial control system, comprising:
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operating the industrial control system in an open mode, wherein communications between a plurality of devices of the industrial control system are unencrypted when the industrial control system is in the open mode; exchanging security tokens between the plurality of devices of the industrial control system; and ceasing operating the industrial control system in the open mode and instead operating the industrial control system in a secure mode, wherein the communications between the plurality of devices of the industrial control system are encrypted using the security tokens when the industrial control system is operating in the secure mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of securing an industrial control system, comprising:
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transmitting unencrypted data between a first device and a second device of an industrial control system; generating a first security token and a second security token for the first and second devices, respectively, using at least one processor of the industrial control system; exchanging the first and second security tokens between the first and second devices of the industrial control system; and ceasing transmitting unencrypted data between the first and second devices, and subsequently only transmitting encrypted data between the first and second devices, wherein the encrypted data is encrypted based on the first and second security tokens. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system, comprising:
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an industrial control network comprising a plurality of devices that includes an industrial controller, wherein the plurality of devices is configured to; exchange respective security tokens between the plurality of devices over the industrial control network; cease exchanging unencrypted data over the industrial control network; and exchange encrypted data over the industrial control network, wherein the encrypted data is generated based on the respective security tokens. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification