Question: The one - time pad cryptosystem, invented by Gilbert Vernam and Joseph Mauborgne in 1 9 1 8 , is the only one construction that

The one-time pad cryptosystem, invented by Gilbert Vernam and Joseph Mauborgne in 1918, is the only one construction that achieves perfect secrecy in classical cryptography. That is, it is unbreakable cryptosystem. Explain why it achieves perfect secrecy.

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