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    • 8. 发明申请
    • Method and system for electronic voting using identity based encryption
    • 使用身份加密进行电子投票的方法和系统
    • US20060229991A1
    • 2006-10-12
    • US11083527
    • 2005-03-18
    • Matthew Campagna
    • Matthew Campagna
    • G06Q99/00
    • H04L9/0825G06Q20/3674G07C13/00H04L9/0866H04L2209/463
    • A voting method includes receiving identity-based information, vote data and a passphrase for a voter, encrypting the vote data using a symmetric key, generating second identity-based information for the voter, and generating an identity-based public key using at least the second identity-based information and a voting system parameter. The symmetric key is encrypted using the identity-based public key and an identity-based asymmetric encryption algorithm. The encrypted symmetric key may be decrypted using a private key corresponding to the identity-based public key and an identity-based asymmetric decryption algorithm, wherein the private key is generated from at least the identity-based public key and a secret master key. The voter is provided with information that includes at least the encrypted vote data and the encrypted symmetric key, and the system retains anonymous identity information, encrypted vote data and the encrypted symmetric key as a paper audit trail.
    • 投票方法包括接收基于身份的信息,投票数据和选民的密码,使用对称密钥加密投票数据,为投票者生成第二基于身份的信息,以及使用至少 第二个基于身份的信息和一个投票系统参数。 使用基于身份的公钥和基于身份的非对称加密算法对对称密钥进行加密。 可以使用对应于基于身份的公钥的私钥和基于身份的非对称解密算法来解密加密的对称密钥,其中从至少基于身份的公钥和秘密主密钥生成私钥。 向选民提供至少包括加密的投票数据和加密的对称密钥的信息,并且系统保留匿名身份信息,加密的投票数据和加密的对称密钥作为纸张审核跟踪。
    • 9. 发明申请
    • Method and system for generating characterizing information descriptive of printed material such as address blocks and generating postal indicia or the like incorporating such characterizing information
    • 用于产生描述诸如地址块的印刷材料的表征信息的方法和系统,并且生成包含这些特征信息的邮政标记等
    • US20050114268A1
    • 2005-05-26
    • US10719051
    • 2003-11-21
    • Leon PintsovMatthew CampagnaDanny Lelli
    • Leon PintsovMatthew CampagnaDanny Lelli
    • G07B17/00G06F17/60
    • G07B17/00733G07B2017/0058G07B2017/0083
    • A method and system for generating and printing an indicium, such as a postal indicium, on an object such as a mail piece. A digital image of other printed material, such as an address block, on the object is obtained, and the image is processed to abstract characterizing information descriptive aspects of the other printed material. The aspects can be measurements of word lengths, counts of outliers in images of characters, or descriptions of the shape of the other printed material. The characterizing information is combined with other information, such as postal information, and the combined information is then cryptographically authenticated with a digital signature or the like. An indicium representative of the authenticated information is then printed on the object. The object's relationship to the indicium can be verified by regenerating the characterizing information from the other printed material and comparing the regenerated characterizing information with characterizing information recovered from the indicium. Thus, copies of the indicium cannot easily be used, without detection, on other objects which do not include the other printed material.
    • 用于在诸如邮件的对象上生成和打印诸如邮戳的标记的方法和系统。 获得对象上的诸如地址块的其他打印材料的数字图像,并处理图像以抽象其他印刷材料的特征描述性方面。 这些方面可以是字长的测量,字符图像中的异常值的计数或其他印刷材料的形状的描述。 特征信息与诸如邮政信息的其他信息组合,然后利用数字签名等对组合的信息进行密码认证。 然后将经过认证的信息的标记印在对象上。 可以通过从其他印刷材料再生表征信息并将再生的特征信息与从标记中回收的特征信息进行比较来验证对象与标记的关系。 因此,标签的副本不能容易地被用于不包括其他印刷材料的其他物体上。
    • 10. 发明申请
    • Method and system for generation of cryptographic keys and the like
    • 用于生成加密密钥等的方法和系统
    • US20060126842A1
    • 2006-06-15
    • US11000852
    • 2004-12-01
    • Matthew CampagnaYiqun Yin
    • Matthew CampagnaYiqun Yin
    • H04K1/00
    • H04L9/0662
    • A method, and deterministic random bit generator system operating in accordance with the method, for generating cryptographic keys and similar secret cryptographic inputs which are hard to guess. A seed is input from an entropy source; and an initial state is generated as a function of the seed. When a request to generate a cryptographic key is received a current state, where the current state is initially the initial state, is mixed to generate an out put string and a next state and the current state is set to the next state. The requested cryptographic key is generated from the string; and output. These steps can be repeated to generate successive output strings with assurance of forward and backward secrecy. An encryption system including such a generator is also disclosed.
    • 根据该方法操作的方法和确定性随机位发生器系统,用于生成难以猜测的加密密钥和类似的秘密加密输入。 从熵源输入种子; 并且作为种子的函数产生初始状态。 当接收到生成加密密钥的请求时,将当前状态初始化为初始状态的当前状态混合以生成输出字符串和下一状态,并将当前状态设置为下一状态。 所请求的加密密钥是从字符串生成的; 并输出。 可以重复这些步骤以产生连续的输出字符串,保证前向和后向的保密性。 还公开了包括这种发生器的加密系统。