How can a time traveler encrypt info so it's only decryptable after a given date

Re:How can a time traveler encrypt info so it's only decrypt... by kdkdodiei4 on Sunday July 28, 2024 @02:28PM (#41094999)

For me it is easy if you are an old man you can simply know what algorithm was used at each time and at the computational level of each time, therefore you can make the only way to decipher the cave is by brute force and that it is probable and easy to resolved in each era through advances and knowledge.

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Re:How can a time traveler encrypt info so it's only decrypt... by badkitty99 on Sunday July 28, 2024 @02:32PM (#41095014)

This is the only sane answer in the comments so far

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Re:How can a time traveler encrypt info so it's only decrypt... by bentcorner on Sunday July 28, 2024 @02:45PM (#41095089)

This kind of answer is ok but since the purpose of "sending stuff back in time" is technological uplift, you can only predict the first key. Everything else could be accelerated. (maybe that's fine but doesn't fit the spirit of the question)

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