Cryptography

• Cryptography is the process of converting plain text into unintelligable code and back into plain text. It’s often used for obfuscating sensitive information and then securely transporting or storing it.
  • may intersect many disciplines such as mathematics, computer science, electrical engineering, physics, etc.
  • the discipline of creating effective cryptographic algorithms"
    • “computational hardness assumptions ↗” are made, which are hypotheses with regard to the sorts of problems computers cannot efficiently solve
  • cryptographic algorithms, or ciphers, can range from impenetrably secure to relatively insecure
  • ciphers generally employ either substitution or transposition (or mixtures of both) to obfuscate information