• mox@lemmy.sdf.orgOP
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    4 months ago

    One-way math doesn’t preclude finding a collision.

    (And just to be clear, checksum in the context of this conversation is a generic term that includes cryptographic hashes and perceptual hashes.)

    Also, since we’re talking about a list of checksums, an attacker wouldn’t even have to find a collision with a specific one to get someone in trouble. This makes an attack far easier. See also: the birthday problem.