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    • 8. 发明申请
    • Signatures with confidential message recovery
    • 签名与保密信息恢复
    • US20090100267A1
    • 2009-04-16
    • US12230799
    • 2008-09-04
    • Daniel R. BrownMatthew J. CampagnaMarinus StruikScott A. Vanstone
    • Daniel R. BrownMatthew J. CampagnaMarinus StruikScott A. Vanstone
    • H04L9/06H04L9/30
    • H04L9/3066H04L9/3242H04L9/3252
    • A portion of the signed message in an ECPVS is kept truly confidential by dividing the message being signed into at least three parts, wherein one portion is visible, another portion is recoverable by any entity and carries the necessary redundancy for verification, and at least one additional portion is kept confidential. The additional portion is kept confidential by encrypting such portion using a key generated from information specific to that verifying entity. In this way, any entity with access to the signer's public key can verify the signature by checking for a specific characteristic, such as a certain amount of redundancy in the one recovered portion, but cannot recover the confidential portion, only the specific entity can do so. Message recovery is also provided in an elliptic curve signature using a modification of the well analyzed ECDSA signing equation instead of, e.g. the Schnorr equation used in traditional PV signature schemes.
    • 通过将被签名的消息划分成至少三个部分,其中一个部分是可见的,另一个部分可被任何实体恢复并且携带必要的冗余以用于验证,并且至少一个 额外的部分保密。 通过使用由该验证实体特有的信息生成的密钥加密这样的部分来将附加部分保密。 以这种方式,任何访问签名者公钥的实体都可以通过检查一个特定的特征来验证签名,例如一个恢复的部分中的一定数量的冗余,但是不能恢复机密部分,只有特定的实体可以做 所以。 消息恢复还以椭圆曲线签名提供,使用经分析良好的ECDSA签名方案的修改,而不是例如。 传统光伏签名方案中使用的Schnorr方程。
    • 10. 发明授权
    • Aggregate signature schemes
    • 总体签名方案
    • US08634559B2
    • 2014-01-21
    • US13461586
    • 2012-05-01
    • Daniel R. BrownScott A. Vanstone
    • Daniel R. BrownScott A. Vanstone
    • H04K1/00G05B11/01G08C19/12
    • H04L9/3066H04L9/3252H04L2209/805
    • An authenticated RFID system is provided that uses elliptic curve cryptography (ECC) to reduce the signature size and read/write times when compared to traditional public key implementations such as RSA. Either ECDSA or ECPVS can be used to reduce the signature size and ECPVS can be used to hide a portion of the RFID tag that contains sensitive product identifying information. As a result, smaller tags can be used or multiple signatures can be written at different stages in a manufacturing or supply chain. A key management system is used to distribute the verification keys and aggregate signature schemes are also provided for adding multiple signatures to the RFID tags, for example in a supply chain.
    • 提供了一种经过认证的RFID系统,与传统的公共密钥实现(如RSA)相比,使用椭圆曲线密码术(ECC)来减少签名大小和读/写时间。 ECDSA或ECPVS可以用于减小签名大小,并且ECPVS可用于隐藏包含敏感产品标识信息的RFID标签的一部分。 因此,可以使用较小的标签,或者可以在制造或供应链中的不同阶段写入多个签名。 密钥管理系统用于分发验证密钥,并且聚合签名方案也被提供用于向RFID标签添加多个签名,例如在供应链中。