【摘要】 ECC(椭圆曲线公钥密码体制)与目前应用较为广泛的RSA(一种公钥密码体制)相比,在同等安全强度的情况下,所需的密钥长度小,签名长度短,非常适易于数字水印领域。综合椭圆曲线公钥体制下的数字签名算法(EC-DSA)、数字水印技术和移动的USBkey技术,研究了用于网络信息身份认证的电子签章系统,并引入一种实用的签名与水印相结合的新方法,此系统的研究有着较为实际的应用意义。更多还原

【Abstract】 Compared ECC (elliptic curve cryptosystems) with RSA (a kind of public key cryptosystems) which is used widely at the present time, ECC has small key and shorter signature length in the same secure intensity, and is great fit to the watermark areas. Combined the technique of ECDSA , watermark and mobile USBkey, the digital seal signature system is researched in detail, and a new method about the combination between digital signature and watermark is put forward, and thesystem will have a significance in practical application.更多还原