Geodesic
On mixing properties of register transformations of ciphers TEA1 and TEA2
Prikladnaya Diskretnaya Matematika. Supplement, no. 17 (2024), pp. 120-122.

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In 2023, stream ciphers TEA1, TEA2, TEA3 were revealed as a part of TETRA standard. We study the mixing properties of register transformations of stream ciphers TEA1 and TEA2. Using the matrix-graph approach, we have calculated the exponents of these register transformations’ mixing matrices, it is equal to 6 and 34 respectively. As a result, we can conclude that the calculated exponents for TEA1 and TEA2 are fitting the parameters chosen by developers. Moreover, it is possible to use key registers with lesser number of warm-up rounds for lightweight ciphers implementation.
Keywords: matrix-graph approach, mixing properties, exponent of matrix, shift register
Mots-clés : TETRA. 
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     author = {P. A. Chezhegova and A. M. Koreneva and M. V. Polyakov and G. V. Firsov},
     title = {On mixing properties of register transformations of ciphers {TEA1} and {TEA2}},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
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     publisher = {mathdoc},
     number = {17},
     year = {2024},
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P. A. Chezhegova; A. M. Koreneva; M. V. Polyakov; G. V. Firsov. On mixing properties of register transformations of ciphers TEA1 and TEA2. Prikladnaya Diskretnaya Matematika. Supplement, no. 17 (2024), pp. 120-122. http://geodesic.mathdoc.fr/item/PDMA_2024_17_a28/

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