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What is a CCM Counter mode with Cipher-block chaining Message authentication code?

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Trent  Carroll
Senior Director
Posted on Oct. 2, 2010
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Counter mode with Cipher-block chaining Message authentication code, or CCM, is a method of encryption that is laid down in the 802.11i standard. It uses keys that are 128 bits in length. A 48-bit initialization vector is used for detecting replay.

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