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Modern cryptography concerns itself with the following four objectives:

 Modern cryptography concerns itself with the following four objectives:
  1. Confidentiality. The information cannot be understood by anyone for whom it was unintended.
  2. Integrity.The information cannot be altered in storage or transit between sender and intended receiver without the alteration being detected.
  3. Non-repudiation. The creator/sender of the information cannot deny at a later stage their intentions in the creation or transmission of the information.
  4. Authentication. The sender and receiver can confirm each other's identity and the origin/destination of the information.

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