Temporal Key Integrity Protocol

Temporal Key Integrity Protocol or TKIP for short ([ ˌtiːˈkɪp ]) is a security protocol for WLAN networks. TKIP was developed by the IEEE 802.11i working group in cooperation with the Wi-Fi Alliance designed to WEP to replace, were asked to the hardware without new or additional requirements. Compatibility with the hardware in use was mandatory, as Wi-Fi networks with the announcement of the weaknesses of WEP encryption no functioning on the data link layer longer possessed.

As of October 31, 2002, the Wi-Fi Alliance supported TKIP under the name Wi-Fi Protected Access (WPA) . The IEEE approved the final version of TKIP. Together with more robust solutions like 802.1X and the AES -based CCMP , they were published on July 23, 2004 in the IEEE standard 802.11i-2004. A short time later, the Wi-Fi Alliance adopted the full specifications under the marketing name WPA2 .

Like WEP, TKIP uses the RC4 algorithm for encryption and the 64-bit cryptographic hash function Michael for message integrity checks . TKIP also ensures that each data packet is secured with a different key, that it is included in the client's MAC address and the 48-bit sequence number (as a measure against replay attacks ). Packets that do not fit into the order are immediately discarded.

Since January 2009 TKIP is no longer considered to be sufficiently secure and the IEEE advises against its use.

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1. ↑ Wi-Fi Alliance Announces Standards-Based Security Solution to Replace WEP . In: Wi-Fi Alliance . October 31, 2002. Archived from the original on January 3, 2008. Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved December 21, 2007. 
2. ↑ IEEE 802.11i-2004: Amendment 6: Medium Access Control (MAC) Security Enhancements (PDF) IEEE Standards. July 23, 2004. Retrieved December 21, 2007.
3. ↑ Wi-Fi Alliance Introduces Next Generation of Wi-Fi Security . In: Wi-Fi Alliance . September 1, 2004. Archived from the original on January 3, 2008. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved December 21, 2007. 
4. ↑ 802.11mb Issues List v12 (excel) January 20, 2009 .: “The use of TKIP is deprecated. The TKIP algorithm is unsuitable for the purposes of this standard "