Two Efficient Hierarchical Identity Based Signature Schemes
Fangguo Zhang · Dianzi xuebao · 2007
Two new hierarchical identity-based signature(HIBS) schemes are proposed.In random oracle model,the two schemes have the following results:The signature generation algorithms are efficient;They are provably secure and have good exact security against existential forgery for selective-ID attack;Signature size in the latter HIBS scheme is constant and independent to hierarchy depth;Both HIBS schemes have tight security reduction.