Lightweight Cryptographic Algorithms for Guessing Attack Protection in Complex Internet of Things Applications

Table 8

Comparison of the lightweight algorithms.

Algorithm	Key length	Default key length	Operating mode	Cipher algorithm padding
DES	56	56	ECB, CBC, PCBC, CTR, CTS, CFB, CFB8-CFB128, OFB, OFB8-OFB128	No padding, PKCS5 padding, ISO10126 padding
3DES	112,168	168	ECB, CBC, PCBC, CTR, CTS, CFB, CFB8-CFB128, OFB, OFB8-OFB128	No padding, PKCS5 padding, ISO10126 padding
AES	128,192,256	128	ECB, CBC, PCBC, CTR, CTS, CFB, CFB8-CFB128, OFB, OFB8-OFB128	No padding, PKCS5 padding, ISO10126 padding
Blowfish	32,448	64	ECB, CBC