TY - GEN
T1 - A new double-block-length hash function using feistel structure
AU - Lee, Jesang
AU - Hong, Seokhie
AU - Sung, Jaechul
AU - Park, Haeryong
PY - 2009
Y1 - 2009
N2 - We propose new double-block-length hash functions. Our approach for constructing collision-resistant double-block-length hash functions is to convert a blockcipher E with n-bit block length and 2n-bit key length to a 3-round Feistel cipher E* with 2n-bit block length, and then to embed E* in PGV compression functions. We prove that 12 hash functions with the group-1 PGV compression functions in which E* is embedded are collision-resistant in the ideal cipher model. Furthermore, since our hash functions have the hash rate 2/3, they are more efficient than any other existing double-block-length hash functions in terms of the number of blockcipher calls required for processing messages.
AB - We propose new double-block-length hash functions. Our approach for constructing collision-resistant double-block-length hash functions is to convert a blockcipher E with n-bit block length and 2n-bit key length to a 3-round Feistel cipher E* with 2n-bit block length, and then to embed E* in PGV compression functions. We prove that 12 hash functions with the group-1 PGV compression functions in which E* is embedded are collision-resistant in the ideal cipher model. Furthermore, since our hash functions have the hash rate 2/3, they are more efficient than any other existing double-block-length hash functions in terms of the number of blockcipher calls required for processing messages.
KW - Block Ciphers
KW - Double Block Length Hash Function
KW - Hash Function
UR - http://www.scopus.com/inward/record.url?scp=70350686291&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-02617-1_2
DO - 10.1007/978-3-642-02617-1_2
M3 - Conference contribution
AN - SCOPUS:70350686291
SN - 3642026168
SN - 9783642026164
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 11
EP - 20
BT - Advances in Information Security and Assurance - Third International Conference and Workshops, ISA 2009, Proceedings
T2 - 3rd International Conference on Information Security and Assurance, ISA 2009
Y2 - 25 June 2009 through 27 June 2009
ER -