Cryptographic Strength Evaluation of Key Schedule Algorithms

Table 2

Secret key size and subkey size of selected KSA.

Ciphers	Block size (bits)	Secret key size (bits)	Subkey size (bits)
AES	128	128	128
Serpent	128	256	128
PRESENT	64	128	128
IDEA	64	128	128
Twofish	128	128	128