Digital Signature Verification Technology

The following subjects are discussed in this paper: Fast verification of Digital Signatue,Digital Signatue scheme with special verification algorithm and shared verification signature scheme. At first, a new scheme based on BIBD that can be used to identify all the bad signatures from a "batch" is proposed. Secondly,you will see a new digital signature scheme derived from RSA which has a special verification algorithm. At Last,the paper will give three new shared verification scheme and each has its own merits.