广播多重数字签名方案研究

在数字签名中基于大数因数分解和二次剩余问题困难性假设,构造广播多重数字签名方案。该方案中每个签名者分别对待签名文件签名,交由签名合成者合成最终签名,并由验证者验证,通过则为合法签名。本方案抗外部攻击、抗部分签名者合谋攻击并能确定合谋者但不能抗部分签名者和验证者的合谋攻击。

Research on Scheme of Radio Multi-signature

Based on the difficulties of factorization of large numbers and the problems of quadratic residue in the signature,radio multi-signature is constructed.The file which is signed by each signer is sent to the signature collector who will synthesize the final signature.Finally,the final signature can be confirmed by the verifier.The scheme discussed can be against the external attacks and the conspiracy attacks of some signers whose identities can be inferred.But the conspiracy of some signers and the verifier...