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What to the numbers and letters after a cypher name mean?

April 26, 2017cypher letters mean Numbers

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What to the numbers and letters after a cypher name mean?

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When required to choose which cypher you wish to use, FreeOTFE will present you with a list of all cyphers that are provided by the FreeOTFE drivers installed. These lists will display cypher names in the format: ([; ] /) Note: The key and block sizes shown are in bits, not bytes. For example: AES (XTS; 256/128) This indicates that the cypher is AES, operating in XTS mode with a key size of 256 bits and a block size of 128 bits. If the key size shown is zero, then the cypher does need take a key (password) to carry out encryption (e.g. the “Null” test cypher). If the key size shown is “-1”, then the cypher can accept keys of arbitrary size. If the block size is “-1”, then the cypher encrypts/decrypts arbitrary block size. Typically, when presented with a selection of different cyphers to choose from, you will see a “?” or “…” button next to the list; clicking this button will display full details on the driver.