However , triangular T - functions remain highly inefficient in hardware .
In software - efficient ciphers , it can be done by interleaving arithmetic operations with byte - swapping operations and to a small degree with bitwise rotation operations .
Triangular T - functions remain highly inefficient in hardware .
In software - efficient ciphers , it can be done by interleaving arithmetic operations with byte - swapping operations and to a small degree with bitwise rotation operations .