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OCB: a block-cipher mode of operation for efficient authenticated encryption
Abstract
We describe a parallelizable block-cipher mode of operation that simultaneously provides privacy and authenticity. OCB encrypts-and-authenticates a nonempty string M ε {0,1}• using \lceil |M|/n\rceil + 2 block-cipher invocations, where n is the block length of the underlying block cipher. Additional overhead is small. OCB refines a scheme, IAPM, suggested by Charanjit Jutla. Desirable properties of OCB include: the ability to encrypt a bit string of arbitrary length into a ciphertext of minimal length; cheap offset calculations; cheap session setup; a single underlying cryptographic key; no extended-precision addition; a nearly optimal number of block-cipher calls; and no requirement for a random IV. We prove OCB secure, quantifying the adversary's ability to violate the mode's privacy or authenticity in terms of the quality of its block cipher as a pseudorandom permutation (PRP) or as a strong PRP, respectively.
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Cited by
Message-Locked Encryption and Secure Deduplication
Bellare, M., Keelveedhi, S., & Ristenpart, T. (2013) · Lecture Notes in Computer Science · doi:10.1007/978-3-642-38348-9_18 · Cited by 632
Self-citationThe Security and Performance of the Galois/Counter Mode (GCM) of Operation
McGrew, D. A., & Viega, J. (2004) · Lecture Notes in Computer Science · doi:10.1007/978-3-540-30556-9_27 · Cited by 522
Nonce-Based Symmetric Encryption
Rogaway, P. (2004) · Lecture Notes in Computer Science · doi:10.1007/978-3-540-25937-4_22 · Cited by 253
Self-citation(2005) · doi:10.5555/1251028.1251039 · Cited by 67
Online Authenticated-Encryption and its Nonce-Reuse Misuse-Resistance
Hoang, V. T., Reyhanitabar, R., Rogaway, P., & Vizár, D. (2015) · Lecture Notes in Computer Science · doi:10.1007/978-3-662-47989-6_24 · Cited by 57
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Metadata
- Authors
- Rogaway, P., Bellare, M., Black, J., & Krovetz, T.
- Venue
- Proceedings of the 8th ACM conference on Computer and Communications Security
- Publisher
- ACM
- Published
- 2001-11-05
- Pages
- 196-205
- ISSN
- 1543-7221 (ISSN-L)
- OpenAlex
- W2145227448
- Cited by
- 368
- References
- 0
- FWCI
- 14.07
- Type
- conference paper
- Language
- en
- Open access
- closed
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- Rogaway, P., Bellare, M., Black, J., & Krovetz, T. (2001). OCB: a block-cipher mode of operation for efficient authenticated encryption. Proceedings of the 8th ACM conference on Computer and Communications Security. https://doi.org/10.1145/501983.502011
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