Page "Timing attack" Paragraph 0
from
Wikipedia
In cryptography, a timing attack is a side channel attack in which the attacker attempts to compromise a cryptosystem by analyzing the time taken to execute cryptographic algorithms.
Every logical operation in a computer takes time to execute, and the time can differ based on the input ; with precise measurements of the time for each operation, an attacker can work backwards to the input.
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1.846 seconds.