![]() So you get the space-saving of the compression and the encryption and they don't affect each other. The encrypted block while be exactly the same size as the original un-encrypted block, just the content will be scrambled. To BitLocker, which operates at the block-level below the filesystem, it is all just blocks of data and the content is irrelevant. The encryption process doesn't know (or care) what it is encrypting. Then these compressed files are stored on a disk with full-disk encryption. By default, it uses the Advanced Encryption Standard (AES) algorithm in cipher block chaining (CBC) or ' xorencryptxor (XEX) -based Tweaked codebook mode with ciphertext Stealing ' (XTS) mode 1 with a 128- bit or 256-bit key. Storage space may actually increase instead of decrease.īut here you have things the other way around:įiles are compressed first (at the NTFS level, before actually saving them) to make them smaller. It is designed to protect data by providing encryption for entire volumes. Drives already encrypted using an algorithm with diffuser can be managed by. So storing already encrypted files in a compressed-archive format (like ZIP, RAR or 7Z) doesn't yield much benefit in terms of compression ratio. BitLocker supports the following Advanced Encryption Standard (AES) algorithms. ![]() I think I understand your logic, but the order of things is important.Īfter encryption encrypted files look like if they are containing random data.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |