Unit 3-Symmetric Key Crypto_Part7

# Unit 3-Symmetric Key Crypto_Part7 - maj(x 8 y 10 z 10 Unit...

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Unit 3 - 13 A5/1, cont. Let us define the majority vote function as: Given three bits x , y and z For examples: maj (0,1,0) = 0 and maj (1,1,0) = 1 A5/1 is implemented in hardware, and at each clock pulse the value is computed. = 0 1 if the majority of , , and are 0 otherwise xy z maj(x,y,z) m =

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Unformatted text preview: maj(x 8 , y 10 , z 10 ) Unit 3 - 14 A5/1, cont. Then the registers X , Y , and Z step according to the following rules: If x 8 = m then X steps If y 10 = m then Y steps If z 10 = m then Z steps Finally, a keystream bit s is generated as s = x 18 ⊕ y 21 ⊕ z 22...
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Unit 3-Symmetric Key Crypto_Part7 - maj(x 8 y 10 z 10 Unit...

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