Crossword Marwan

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Across
  1. 2. is used to transmit data securely and anonymously over public networks.
  2. 4. attack which consists of testing all possible password or key solutions.
  3. 5. attack which consists of testing all the words in a list as a keyword
  4. 7. a symmetric encryption algorithm (block cipher) using 56-bit keys
Down
  1. 1. malware that infects your PC or mobile device and collects information
  2. 3. The principle holds that a cryptosystem should be secure, even if everything about the system, except the key, is public knowledge.
  3. 6. a public-key cryptosystem, one of the oldest widely used for secure data transmission.
  4. 7. attack that makes a server inaccessible in order to cause an outage