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EUROCRYPT
2001
Springer

Encryption Modes with Almost Free Message Integrity

11 years 4 months ago
Encryption Modes with Almost Free Message Integrity
We define a new mode of operation for block encryption which in addition to assuring confidentiality also assures message integrity. In contrast, previously for message integrity a separate pass was required to compute a cryptographic message authentication code (MAC). The new mode of operation, called Integrity Aware CBC (IACBC) requires a total of m + 2 block encryptions on a plain-text of length m blocks. The well known CBC (cipher block chaining) mode requires m block encryptions. The second pass of computing the CBC-MAC essentially requires additional m block encryptions. A new highly parallelizable mode (IAPM) is also shown to be secure for both encryption and message integrity.
Charanjit S. Jutla
Added 28 Jul 2010
Updated 28 Jul 2010
Type Conference
Year 2001
Where EUROCRYPT
Authors Charanjit S. Jutla
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