Method of verifying unreadable indicia for an information-based indicia
program

    公开(公告)号:US5974147A

    公开(公告)日:1999-10-26

    申请号:US743972

    申请日:1996-11-07

    摘要: The present invention provides a method for verifying an unreadable information-based indium that has been generated by a postal security device (PSD) for information-based indium comprising a 2-D bar code, certain human-readable information, a digital signature and a certificate. The method comprises the steps of attempting to read the 2-D bar code using sophisticated digital image processing when the 2-D bar code is not readable; and continuing normal processing when the 2-D bar code is readable with the sophisticated digital image processing. When the 2-D bar code is not readable two independent processes are used to determine the indicium certificate. A first process includes reading human readable information by optical character recognition using context, syntax, and redundancy in the human readable information to obtain a PSD-ID; and using the PSD-ID to look up in a certificate database a certificate corresponding to the information-based indicium. A second process includes interpreting partial bar code data and extracting a "best guess" of the certificate and searching the certificate database for the closest matching certificate. The method further comprises merging data obtained from the two processes and attempting to reconstruct bar code data from the merged data. If the merged data is sufficient, an attempt is made to verify the digital signature obtained from the merged data. If the signature is verified, normal processing is resumed. If the merged data is insufficient or if the signature is not verified, a suspect mailpiece record is created.

    Method of verifying unreadable indicia for an information-based indicia program
    2.
    发明授权
    Method of verifying unreadable indicia for an information-based indicia program 有权
    用于验证基于信息的标记程序的不可读标记的方法

    公开(公告)号:US06363484B1

    公开(公告)日:2002-03-26

    申请号:US09399892

    申请日:1999-09-21

    IPC分类号: G06F124

    摘要: The present invention provides a method for verifying an unreadable information-based indium that has been generated by a postal security device (PSD) for information-based indium comprising a 2-D bar code, certain human-readable information, a digital signature and a certificate. The method comprises the steps of attempting to read the 2-D bar code using sophisticated digital image processing when the 2-D bar code is not readable; and continuing normal processing when the 2-D bar code is readable with the sophisticated digital image processing. When the 2-D bar code is not readable two independent processes are used to determine the indicium certificate. A first process includes reading human readable information by optical character recognition using context, syntax, and redundancy in the human readable information to obtain a PSD-ID; and using the PSD-ID to look up in a certificate database a certificate corresponding to the information-based indicium. A second process includes interpreting partial bar code data and extracting a “best guess” of the certificate and searching the certificate database for the closest matching certificate. The method further comprises merging data obtained from the two processes and attempting to reconstruct bar code data from the merged data. If the merged data is sufficient, an attempt is made to verify the digital signature obtained from the merged data. If the signature is verified, normal processing is resumed. If the merged data is insufficient or if the signature is not verified, a suspect mailpiece record is created.

    摘要翻译: 本发明提供了一种用于验证由用于基于信息的铟的邮政安全设备(PSD)生成的不可读信息的铟的方法,其包括二维条形码,某些人类可读信息,数字签名和 证书。 该方法包括以下步骤:当2-D条形码不可读时,尝试使用复杂的数字图像处理来读取2-D条形码; 并且当复杂的数字图像处理可读取2-D条形码时,继续正常处理。 当二维条形码不可读时,两个独立进程用于确定标记证书。 第一过程包括通过使用人类可读信息中的上下文,语法和冗余的光学字符识别来读取人类可读信息以获得PSD-ID; 并使用PSD-ID在证书数据库中查找与基于信息的标记相对应的证书。 第二个过程包括解释部分条形码数据并提取证书的“最佳猜测”,并在证书数据库中搜索最接近的匹配证书。 该方法还包括合并从两个处理获得的数据,并尝试从合并的数据重建条形码数据。 如果合并的数据足够,则尝试验证从合并的数据中获得的数字签名。 如果签名被验证,则恢复正常处理。 如果合并的数据不足或签名未被验证,则创建可疑的邮件记录。

    System and method of verifying cryptographic postage evidencing using a
fixed key set
    8.
    发明授权
    System and method of verifying cryptographic postage evidencing using a fixed key set 有权
    使用固定密钥集验证加密邮资证明的系统和方法

    公开(公告)号:US06058193A

    公开(公告)日:2000-05-02

    申请号:US340592

    申请日:1999-06-28

    IPC分类号: G07B17/00 H04L9/00

    摘要: A method for controlling keys used in the verification of encoded information generated by a transaction evidencing device and printed on a document comprises the steps of generating a plurality of random verifier master keys to obtain a set of verifier master keys consisting of a fixed number of keys; generating at least one pointer by applying a psuedorandom algorithm to data unique to the transaction evidencing device; calculating a plurality of verifier token keys to obtain a verifier token key set corresponding to the set of verifier master keys; encrypting the verifier token key set with a privacy key; and distributing the set verifier token keys and the privacy key to verifiers. The token keys are a function of the verifier master keys and a code valid for a limited time. The pointer algorithm is an appropriate symmetric key cryptographic algorithm and the code is function of a date dependent parameter. The master keys are distributed to postal and vendor data centers.

    摘要翻译: 一种用于控制用于验证由交易证明设备产生并被打印在文档上的编码信息的密钥的方法包括以下步骤:生成多个随机验证器主密钥以获得由固定数量的密钥组成的一组验证者主密钥 ; 通过对所述交易证明设备唯一的数据应用伪随机算法来生成至少一个指针; 计算多个验证者令牌密钥以获得与所述验证者主密钥集合相对应的验证者令牌密钥集; 用隐私密钥加密验证者令牌密钥集; 并将设置的验证者令牌密钥和隐私密钥分发给验证者。 令牌密钥是验证者主密钥和有限时间内有效的代码的函数。 指针算法是适当的对称密钥加密算法,代码是日期相关参数的函数。 主密钥分发给邮政和供应商数据中心。