whitequark, (edited )
@whitequark@mastodon.social avatar

cryptograper friends: would you describe this algorithm with the word 'encryption'? (the password is 1 to 15 ASCII characters long)

chrisvest,
@chrisvest@mastodon.social avatar

@whitequark it has the interesting property that if you typo your psaswrod it'll still decrypt without issue. Is the ciphering done by XOR'ing the key stream with the clear text stream? It's, uh, better than base64 and rot13 at least, but only by a few milliseconds of brute forcing.

whitequark,
@whitequark@mastodon.social avatar

@chrisvest there's no authentication so you don't know if you've succeeded (you could probabilistically know I guess) but the password is 15 letters max, so you will need worst case 2000 attempts. you can enumerate the whole key space in less than a hour by simply looking at every possible ascii key

it's beautiful

chrisvest,
@chrisvest@mastodon.social avatar

@whitequark I will happily sign off on this for DRM use ☺️

mcc,
@mcc@mastodon.social avatar

@whitequark For whatever reason this is making me imagine the idea of an encryption algorithm which performs many expensive XOR operations which ultimately all cancel out into a NOOP, and then branding it as "recryption". Encryption and decryption in one step

mcc,
@mcc@mastodon.social avatar

@whitequark This would be very popular among build engineers, as they value idempotence

Rairii,
@Rairii@haqueers.com avatar

@whitequark that's some good memecrypto there

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