How is AES256 different from AES128? Which is more secure?
a) AES256 uses a 256-bit key while AES128 uses a 128-bit key.
b) AES256 uses a 128-bit key while AES128 uses a 256-bit key.
c) AES256 uses a 512-bit key while AES128 uses a 256-bit key.
d) AES256 uses a 256-bit key while AES128 uses a 512-bit key.