Security, Symmetric Encryption, Cryptography, Encryption.
for the same reason as in GHASH. s is same as k. Disk Encryption (AES-XTS) AES-XEX (Xor- Encrypt-Xor) with XTS (CipherText Stealing) is a popular mode of Disk Encryption supported by Software like TrueCrypt. This is how AES-XES looks from Wikipedia. As earlier it is a Stream based Cipher so the