Disclaimer : basic crypto knowledge
So this is a question specificly about veracrypt , but theoreticly applies to any other encryption software which supports cipher cascades .
So if you use a cipher cascade with 3 cipheres e.g : AES(TWOFISH(SERPENT)) , then the key is divided in 3 different keys (hashes from KDF ) with 1/3 of the original key strength . So like a 8-10 charakter long password would not be considered secure right ?
But what if you use a keyfile like some mp3 file or some random generated stuff like an RSA cert. Veracrypt uses the first 1024 byte of the file so that would make a 4096 bit master key and a 1365 bit key for every cipher in the cascade if I understood that right. Which would be more than enough to be secure right?
Please correct every misunderstanding in my previous claims.