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E2 - A Candidate Cipher for AES

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First <strong>AES</strong> <strong>Candidate</strong> Conference<br />

Design Rationale of Framework<br />

• Feistel structure<br />

� Widely known and thought to offer long-term<br />

security<br />

� Symmetric encryption and decryption<br />

� Evaluation of security against DC and LC<br />

has been well studied<br />

• IT-Function and FT-Function<br />

� Offer a proactive design and hinder later<br />

attacks<br />

Copyright NTT 1998

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