首页> 外国专利> BIT COMMITMENT SYSTEM, BIT COMMITMENT METHOD, BIT COMMITMENT TRANSMITTING DEVICE, BIT COMMITMENT RECEIVING DEVICE, BIT COMMITMENT TRANSMITTING METHOD, BIT COMMITMENT RECEIVING METHOD, AND BIT COMMITMENT PROGRAM

BIT COMMITMENT SYSTEM, BIT COMMITMENT METHOD, BIT COMMITMENT TRANSMITTING DEVICE, BIT COMMITMENT RECEIVING DEVICE, BIT COMMITMENT TRANSMITTING METHOD, BIT COMMITMENT RECEIVING METHOD, AND BIT COMMITMENT PROGRAM

机译:BIT承诺系统,BIT承诺方法,BIT承诺传输设备,BIT承诺接收设备,BIT承诺传输方法,BIT承诺接收方法和BIT承诺程序

摘要

PROBLEM TO BE SOLVED: To provide a non-interactive and multiple bit commitment type bit commitment system.;SOLUTION: This bit commitment system comprises: a transmitting device for transmitting information (m); a receiving device; and a public opening device. The public opening device opens common reference information (crs) including function indexes (s) of ABO-TDF to the public. The transmitting device is provided with: a signature creating part for obtaining cO using the ABO-TDF from the function index (s) and a random number (ra) with a verification key (vk) as a loss branch, randomizing cO using a random number (rb) to generate c1, obtaining c2 from a random number (ra) and the information (m), and creating a signature from c1 and c2 using a signature key (sk); and a commitment creating part for creating a commitment (com) including c1, c2 and . The receiving device is provided with a commitment verifying part for verifying the commitment (com) by using the common reference information (crs) and opening information M.;COPYRIGHT: (C)2010,JPO&INPIT
机译:解决的问题:提供一种非交互式的多比特承诺类型的比特承诺系统。解决方案:该比特承诺系统包括:用于传输信息的传输设备(m);接收装置;和公共开放装置。公众开放装置向公众开放包括ABO-TDF的功能索引的公共参考信息(crs)。发送装置具备:签名生成部,该签名生成部使用ABO-TDF从函数索引和以验证密钥(vk)为损失分支的随机数(ra)获得cO,使用随机数对cO进行随机化。数字(rb)生成c1,从随机数(ra)和信息(m)获得c2,并使用签名密钥(sk)从c1和c2创建签名;承诺创建部分,用于创建包括c1,c2和的承诺(com)。接收设备具有承诺验证部分,用于通过使用公共参考信息(crs)和打开信息M来验证承诺(com)。;版权所有:(C)2010,JPO&INPIT

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