# Table 5 Partial encryption and decryption on 24-round LBlock

Step Guess Time Obtained States Size
1 $$K_{24}^{7}$$ N·24·2 $$X_{0}^{0}\left |X_{0}^{14}\right | X_{0}^{5}\left |X_{0}^{9}\right | X_{0}^{6}\left |X_{0}^{1}\right | X_{0}^{8}\left |X_{0}^{4}\right | X_{24}^{13} |$$ 260·2
$$X_{22}^{7}\left |X_{24}^{2}\right | X_{24}^{8}\left |X_{24}^{11}\right | X_{24}^{0} | X_{24}^{9}$$
2 $$K_{24}^{0}$$ 260·28·2 $$X_{0}^{0}\left |X_{0}^{14}\right | X_{0}^{5}\left |X_{0}^{9}\right | X_{0}^{6}\left |X_{0}^{1}\right | X_{0}^{8}\left |X_{0}^{4}\right | X_{24}^{13} |$$ 256·2
$$X_{22}^{7}\left |X_{22}^{4}\right | X_{24}^{11}\left |X_{24}^{0}\right | X_{24}^{9}$$
3 $$K_{23}^{7}[0]$$ 256·28+1·2 $$X_{0}^{0}\left |X_{0}^{14}\right | X_{0}^{5}\left |X_{0}^{9}\right | X_{0}^{6}\left |X_{0}^{1}\right | X_{0}^{8}\left |X_{0}^{4}\right | X_{21}^{7} |$$ 252·2
$$X_{22}^{4}\left |X_{24}^{11}\right | X_{24}^{0} | X_{24}^{9}$$
4 $$K_{1}^{4}$$ 252·29+4·2 $$X_{0}^{0}\left |X_{0}^{14}\right | X_{0}^{5}\left |X_{0}^{9}\right | X_{0}^{6}\left |X_{0}^{1}\right | X_{0}^{1}\left |X_{1}^{6}\right | X_{21}^{7}\left |X_{22}^{4}\right |$$ 248·2
$$X_{24}^{11}\left |X_{24}^{0}\right | X_{24}^{9}$$
5 $$K_{2}^{6}$$ 248·213+4·2 $$X_{0}^{0}\left |X_{0}^{14}\right | X_{0}^{5}\left |X_{0}^{9}\right | X_{0}^{6}\left |X_{2}^{7}\right | X_{21}^{7}\left |X_{22}^{4}\right | X_{24}^{11} |$$ 244·2
$$X_{24}^{0} | X_{24}^{9}$$
6 $$K_{1}^{6}$$ 244·217+4·2 $$X_{0}^{0}\left |X_{0}^{14}\right | X_{0}^{5}\left |X_{1}^{7}\right | X_{2}^{7}\left |X_{21}^{7}\right | X_{22}^{4}\left |X_{24}^{11}\right |$$ 240·2
$$X_{24}^{0} | X_{24}^{9}$$
7 $$K_{1}^{5}$$ 240·221+4·2 $$X_{0}^{0}\left |X_{1}^{4}\right | X_{1}^{7}\left |X_{2}^{7}\right | X_{21}^{7}\left |X_{22}^{4}\right | X_{24}^{11}\left |X_{24}^{0}\right | X_{24}^{9}$$ 236·2
8 $$K_{2}^{4}$$ 236·225+4·2 $$X_{3}^{14}\left |X_{1}^{7}\right | X_{2}^{7}\left |X_{21}^{7}\right | X_{22}^{4}\left |X_{24}^{11}\right | X_{24}^{0} | X_{24}^{9}$$ 232·2
9 $$K_{3}^{7}$$ 232·229+4·2 $$X_{3}^{14}\left |X_{3}^{5}\right | X_{21}^{7}\left |X_{22}^{4}\right | X_{24}^{11}\left |X_{24}^{0}\right | X_{24}^{9}$$ 228·2
10 $$K_{24}^{1}, K_{4}^{5}[1]$$ 228·233+5·4 $$X_{4}^{4}\left |X_{21}^{7}\right | X_{22}^{4}\left |X_{24}^{11}\right | X_{22}^{2}$$ 220·2
11 $$K_{23}^{2}$$ 220·238+4·2 $$X_{4}^{4}\left |X_{21}^{7}\right | X_{22}^{4} | X_{21}^{5}$$ 216·2
12 $$K_{22}^{5}$$ 216·242+4·2 $$X_{4}^{4}\left |X_{21}^{7}\right | X_{20}^{6}$$ 212·2
13 $$K_{21}^{6}$$ 212·246+4·2 $$X_{4}^{4} | X_{20}^{9}$$ 28·2