Tweakable parallel OFB mode of operation with delayed thread synchronization

What is it about?

In this paper, we consider the performance of a convenient cryptographic mode of operation, which performs tweakable parallel encryption using xor encrypt xor (XEX) and xor encrypt (XE) constructions in OFB like mode.

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Why is it important?

1) The results obtained show that it is possible to achieve performance accelerations of the standard OFB mode up to nearly 20% under different test platforms. 2) Another feature of this mode of operation is that it does not require existence of inverse blockcipher function for its operation. 3) There is no evidence in the available literature that OFB mode has ever been parallelized. 4) 1-bit error in the ciphertext will produce a 1-bit error in the plaintext. This characteristic makes the presented mode extremely valuable for satellite communications,