I have a couple of "older" netbooks and laptops (like Acer Aspire One 753, Asus Eee PC 901GO, IBM ThinkPad T42p), and since I consider disk encryption essential on mobile computers, I am wondering which algorithm & encryption-key-length are best suited for such low speed CPUs without hardware AES.
In the handbook and manpage AES-XTS is mentioned as the default and recommended algo with a key-length of 128 bit.
Should I stick with the default, or would anybody recommend AES-CBC instead?
Is the performance impact noticeable choosing a key-length of 256 instead of 128 bit?
In the handbook and manpage AES-XTS is mentioned as the default and recommended algo with a key-length of 128 bit.
Should I stick with the default, or would anybody recommend AES-CBC instead?
Is the performance impact noticeable choosing a key-length of 256 instead of 128 bit?