Cipher for disk encryption

Cryptography – Particular algorithmic function encoding – Nbs/des algorithm

Reexamination Certificate

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C380S042000

Reexamination Certificate

active

07602906

ABSTRACT:
Encryption is provided with additional diffusion components to construct a block cipher with a large and variable block size. The cipher incorporates an encryption system or algorithm such that the cipher is at least as secure as the encryption system or algorithm. Additional components of the cipher provide improved diffusion. This combination ensures that the cipher is at least as strong as the encryption algorithm, and at the same time it provides additional security properties due to its improved diffusion.

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patent: 2005/0180565 (2005-08-01), Kurdziel et al.
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Bellaire, Mihir, et al., “On the Construction of Variable-Input-Length Ciphers,”Lecture Notes in Computer Science, Proceedings of the 6th International Workshop on Fast Software Encryption, 1999, (1636), 231-244.
Crowley, Paul, “Mercy: A Fast Large Block Cipher for Disk Sector Encryption,”Lecture Notes in Computer Science, Proceedings of the 7th International Workshop on Fast Software Encryption, 2000, (1978),49-63.
Ferguson, Niels, et al., “Helix, Fast Encryption and Authentication in a Single Cryptographic Primitive,”Lecture Notes in Computer Science, Fast Software Encryption: 10th International Workshop, Revised Papers, FSE 2003, Feb. 24-26, 2003, 1-18.
Fluhrer, Scott R., “Cryptanalysis of the Mercy Block Cipher,”Lecture Notes in Computer Science, Revised Papers from the 8th International Workshop on Fast Software Encryption, 2001, 2355, 28-36.
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Lucks, Stefan, et al., “Beast: A Fast Block Cipher for Arbitrary Blocksizes,”Proceedings of the IFIP TC6/TC11 International Conference on Communications and Multimedia Security II, 1997, 144-153.
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