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by ciphernomad-org
361 days ago
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This is a classic Feistel network round: L_new = L_old ^ F(key, R_old). It's a deliberate design. The security of the Labyrinth relies on the composition of many rounds, not any single one. The unchanged right half from a Hash round is fully encrypted if the next round is a Stream round. Since the Labyrinth is a deep, aperiodic mix of both round types, the entire block is guaranteed to be diffused and encrypted. |
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