Identity-based multi-proxy threshold signature scheme

• Main Authors: Shao-nung Huang, 黃劭農
• Other Authors: Jenshiuh Liu
• Format: Others
• Language: en_US
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/68572252859043360980

碩士 === 逢甲大學 === 資訊工程所 === 95 === We present three identity-based multi-proxy threshold signature schemes. First one is easier to manage. the second one is anonymity, the third one is anomymity and traceable. The main features of our proposed work are: (a)ID-based scheme reduces certificate management, (b) riginal signers and proxy signers are both allowed to be a group (c) only t or more proxy signers of the group can cooperatively issue a proxy signature on behalf of the original signer group, (d) the first and the third proposed schemes, we allow anyone join the original group without reset the system, (e) we support anonymity ability for the second and the third proposed schemes, (f ) in traceable scheme, if it’s necessary we can trace the co-signers of a certain signature. Furthermore, our proxy signature scheme is shown to be secure against forgery attacks.