Editing Man-in-the-middle attack (section)

=== Tamper detection ===
Latency examination can potentially detect the attack in certain situations,<ref>{{cite book |last1= Aziz|first1= Benjamin|last2= Hamilton|first2= Geoff |title= 2009 Third International Conference on Emerging Security Information, Systems and Technologies|chapter= Detecting Man-in-the-Middle Attacks by Precise Timing|date= 2009|pages= 81–86|doi= 10.1109/SECURWARE.2009.20|isbn= 978-0-7695-3668-2|s2cid= 18489395|chapter-url= https://researchportal.port.ac.uk/portal/files/107556/Detecting_Man-in-the-Middle_Attacks_by_Precise_Timing.pdf}}</ref> such as with long calculations that lead into tens of seconds like [[cryptographic hash function|hash functions]]. To detect potential attacks, parties check for discrepancies in response times. For example: Say that two parties normally take a certain amount of time to perform a particular transaction. If one transaction, however, were to take an abnormal length of time to reach the other party, this could be indicative of a third party's presence interfering with the connection and inserting additional latency in the transaction.

[[Quantum cryptography]], in theory, provides tamper-evidence for transactions through the [[no-cloning theorem]]. Protocols based on quantum cryptography typically authenticate part or all of their classical communication with an unconditionally secure authentication scheme. As an example [[Wegman-Carter authentication]].<ref>{{cite web|url=http://www.lysator.liu.se/~jc/mthesis/5_Unconditionally_secure_au.html|title=5. Unconditionally secure authentication|work=liu.se|first=Jörgen|last=Cederlöf}}</ref>