FT Tech Tonic

The quantum revolution: Q-Day

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Mar 7, 2023
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ANECDOTE

Password Cracking

  • Mark Carney, a cybersecurity expert, explains how easy it is to crack common passwords using a laptop.
  • Many people use predictable words, patterns, or simple substitutions, making brute-force attacks effective.
INSIGHT

Quantum Speed

  • Quantum computers don't guess passwords sequentially like classical computers.
  • They consider all possibilities simultaneously, drastically reducing cracking time.
INSIGHT

RSA Encryption

  • RSA encryption relies on the difficulty of factoring large numbers into two primes.
  • This is computationally expensive for classical computers, making RSA seemingly secure.
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