Hi again, I must clarify my very own point. > vodstok could also use AES CBC (or any > chained mode) as well as ECB for small files, ie. when downloading the > whole file before decrypting remains an option. vodstok is actually using CBC, but for small independent chunks, which means it has more or less the same vulnerabilities as ECB. I was actually mentioning the possibility to encrypt the whole file using CBC before splitting it. Of course, because chunks are downloaded in random order, this is fine only for small files (the whole thing has to be downloaded before decryption). Regards.
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