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Cryptography Post #3300 · source on Telegram

Eve is always watching

Description

A popular photobomb meme is repurposed to explain a fundamental concept in cryptography. The image depicts a wedding scene where a couple is kissing in the background. A white label identifies the bride as 'Alice' and the groom as 'Bob'. In the foreground, another man stares intently and somewhat menacingly into the camera, photobombing the couple. He is labeled 'Eve'. The joke is a clever personification of the standard placeholder names used in security and cryptography: Alice and Bob are the two parties who wish to communicate securely, while Eve is the 'eavesdropper' who tries to intercept their communication. The meme perfectly captures the intrusive nature of a man-in-the-middle attack or network eavesdropping, where the attacker (Eve) is always watching the supposedly private exchange between two parties (Alice and Bob)

Comments

27
Anonymous ★ Top Pick This is your data transmission on HTTP. Any questions?
  1. Anonymous ★ Top Pick

    This is your data transmission on HTTP. Any questions?

  2. Anonymous

    The moment the officiant said “you may exchange keys,” Alice and Bob went with unauthenticated Diffie-Hellman - now Eve’s in every wedding photo, a timeless reminder to always add authentication to your handshake

  3. Anonymous

    Eve's been trying to break their connection for years, but Alice and Bob's relationship uses perfect forward secrecy - even if she compromises today's session key, she'll never decrypt their past conversations about whose turn it is to refactor the legacy codebase

  4. Anonymous

    After years of exchanging encrypted messages, Alice and Bob finally achieved perfect forward secrecy at their wedding - but Eve still managed to capture the session key in this candid photo. Turns out even TLS 1.3 can't protect against a determined third party with a camera at the ceremony

  5. Anonymous

    Eve sees the handshake but can't derive the shared secret - passive attacks gonna pass

  6. Anonymous

    TLS 1.3 at the altar: Alice and Bob negotiated ECDHE; Eve photobombed the handshake, but without a rogue CA all she captured was cake

  7. Anonymous

    Alice and Bob finally ship mutual TLS; Eve still gets the metadata - PFS protects the kiss, not the guest list

  8. @Grebenkin_Il 5y

    it's difficult

  9. @clockware 5y

    Does he really want to intercept any of this?

  10. @viktorrozenko 5y

    I think it's about the fact that in CS problems they use names like Alice and Bob because they start with the first 2 letters of the alphabet, where Eve is not close enough

    1. Deleted Account 5y

      Eve is the eavesdropper Alice and Bob are generic characters

      1. Deleted Account 5y

        Haha) dude thx

    2. @furqan 5y

      makes sense

    3. @p4vook 5y

      Cryptography terms. Alice usually wants to send a message to Bob, while Eve wants to intercept it.

  11. @viktorrozenko 5y

    But I'm not sure

  12. @wizaral 5y

    Cryptographic problems is described with this names

    1. Deleted Account 5y

      +

  13. Deleted Account 5y

    Imagine Middle man attack

    1. @ZgGPuo8dZef58K6hxxGVj3Z2 5y

      Oh noo😂😂😂😂😂😂😂😂👍👍👍

    2. dev_meme 5y

      😂

  14. @viktorrozenko 5y

    Oh yeag

  15. @viktorrozenko 5y

    Truuue

  16. @viktorrozenko 5y

    Thx ppl

  17. @FunnyGuyU 5y

    He's gonna be 'Man in the middle' )

  18. @annshorn 5y

    😂

  19. @beton_kruglosu_totchno 5y

    I do not want to be archaic but why does left human have male face and is called Eve?

    1. @kitbot256 5y

      Short for Evan?

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