Geodesic
Some methods of hash functions analysis with application to the GOST P~34.11-94 algorithm
Matematičeskie voprosy kriptografii, Tome 3 (2012), pp. 71-89

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A class of hash functions with a special finalization round (containing the GOST R 34.11-94 hash function) is considered. For functions from this class we propose a new multicollision attack and show that by means of Wagner's method it is possible to construct a description of a large number of different collisions. For GOST R 34.11-94 hash function we propose a modification of the known collision attack using smaller amount of memory. We obtain lower estimate for the amount of memory permitting the modified attack to be faster than generic ones. 
@article{MVK_2012_3_a3,
     author = {D. V. Matyukhin and V. A. Shishkin},
     title = {Some methods of hash functions analysis with application to the {GOST} {P~34.11-94} algorithm},
     journal = {Matemati\v{c}eskie voprosy kriptografii},
     pages = {71--89},
     publisher = {mathdoc},
     volume = {3},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MVK_2012_3_a3/}
}
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D. V. Matyukhin; V. A. Shishkin. Some methods of hash functions analysis with application to the GOST P~34.11-94 algorithm. Matematičeskie voprosy kriptografii, Tome 3 (2012), pp. 71-89. http://geodesic.mathdoc.fr/item/MVK_2012_3_a3/