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Its the security algorithm used in GSM communications for security purposes.

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Posted by kk_kumar

Ciphering key generating algorithm(A8) is used to produce. the 64-bit ciphering key(Kc)

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Posted by akumar_8181

Ciphering Key Generating Algorithm A8 is used in conjunction with Ki, the authentication key, and RAND (Random Number) to generate Kc (Cipher Key).

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Posted by sagitraz