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公开(公告)号：US5825880A
公开(公告)日：1998-10-20
申请号：US869253
申请日：1997-06-04
CPC分类号： G06F21/64 , G06F21/40 , G06Q20/02 , G06Q20/3821 , G06Q20/3829 , H04L9/085 , H04L9/3255 , G06F7/725
摘要： A multi-step signing system and method uses multiple signing devices to affix a single signature which can be verified using a single public verification key. Each signing device possesses a share of the signature key and affixes a partial signature in response to authorization from a plurality of authorizing agents. In a serial embodiment, after a first partial signature has been affixed, a second signing device exponentiates the first partial signature. In a parallel embodiment, each signing device affixes a partial signature, and the plurality of partial signatures are multiplied together to form the final signature. Security of the system is enhanced by distributing capability to affix signatures among a plurality of signing devices and by distributing authority to affix a partial signature among a plurality of authorizing agents.
摘要翻译： 多步签名系统和方法使用多个签名设备来附加可以使用单个公共验证密钥进行验证的单个签名。 每个签名装置具有签名密钥的共享，并且响应于来自多个授权代理的授权而附加部分签名。 在一个串行实施例中，在第一部分签名被贴上之后，第二签名装置指数第一部分签名。 在一个平行实施例中，每个签名装置贴上部分签名，并将多个部分签名相乘在一起形成最终签名。 通过在多个签名装置之间分配能力来贴附签名来增强系统的安全性，并且通过分发权限来在多个授权代理之间附加部分签名。
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公开(公告)号：US20090217034A1
公开(公告)日：2009-08-27
申请号：US12382721
申请日：2009-03-23
CPC分类号： G06Q20/02 , G06F7/725 , G06Q20/3829 , H04L9/085 , H04L9/3255
摘要： A multi-step signing system and method uses multiple signing devices to affix a single signature which can be verified using a single public verification key. Each signing device possesses a share of the signature key and affixes a partial signature in response to authorization from a plurality of authorizing agents. In a serial embodiment, after a first partial signature has been affixed, a second signing device exponentiates the first partial signature. In a parallel embodiment, each signing device affixes a partial signature, and the plurality of partial signatures are multiplied together to form the final signature. Security of the system is enhanced by distributing capability to affix signatures among a plurality of signing devices and by distributing authority us affix a partial signature among a plurality of authorizing agents.
摘要翻译： 多步签名系统和方法使用多个签名设备来附加可以使用单个公共验证密钥进行验证的单个签名。 每个签名装置具有签名密钥的共享，并且响应于来自多个授权代理的授权而附加部分签名。 在一个串行实施例中，在第一部分签名被贴上之后，第二签名装置指数第一部分签名。 在一个平行实施例中，每个签名装置贴上部分签名，并将多个部分签名相乘在一起形成最终签名。 通过在多个签名装置之间分配能力来贴附签名来增强系统的安全性，并且通过分配授权我们在多个授权代理之间附加部分签名。
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