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A hash algorithm is a function which takes a variable size input and produces a fixed size output. The algorithm tries to make it difficult to predict the output for a given input, find two inputs with the same output, or reconstruct the input from the output.

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how message authentication code share keys?

How are secret keys shared between receiver and sender, especially when we want to have confidentiality that sender and receiver are using two keys, one for MAC algorithm and one for encryption and de …
erfan ahmad's user avatar