169579
This is achieved by using keyed hash function H and pseudorandom function F. A tag is generated by performing the computation Tag = H_K1 ( M ) + F_K2 ( Nonce ) where K1 and K2 are secret random keys shared by sender and receiver , and Nonce is a value that changes with each generated tag .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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