Research Article
Related-Key Differential Attacks on Reduced-Round LBlock
Table 12
Related-key differential attack process on 22-round LBlock.
| Step | Subkey | Masterkey | #Bits | Time | #Pairs left |
| 1 | | | 2 (, 2 cases for ) | | | 2 | | | 3 | | | 3 | | | 4 | | | 4 | | | 1 | | | 5 | | | 4 | | | 6 | | | 3 (, 4 cases for ) | | | 7 | | | 3 | | | 8 | | | 4 | | | 9 | | | 3 (, 2 cases for ) | | | 10 | | | 2 | | | 11 | | | 4 | | | 12 | | | 2 | | | 13 | | | 4 | | | 14 | | | 4 | | | 15 | | | 4 | | | 16 | | | 4 | | |
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