Cryptography – Electric signal modification – Having production of printed copy
Patent
1993-10-08
1995-09-05
Cain, David C.
Cryptography
Electric signal modification
Having production of printed copy
380 23, 380 28, 380 43, 380 55, H04K 100
Patent
active
054486416
ABSTRACT:
A data center provides a rate table to a user. The rate table is communicated to the mailer along with a hash code that is based on information from the rating table. The hash code provides a unique number based on the rating table. The user within a secure device and to which the rate table is loaded regenerates the hash code based on the information received from the rate table and compares the transmitted hash code with the generated hash code. The comparison verifies that the rate table data has not been intentionally or unintentionally corrupted. The transmitted hash code may be encrypted by the data center and when received decrypted by the mailer. The encryption decryption process provides authenticity of the data center if desired. The generation of the hash code and the comparison with the transmitted hash code can be initiated prior to postage printing and used to insure proper rating. Printing is enabled only after the rating process has been properly implemented. The hash code and rating information may be printed on the mail piece such that a verifying party can reconstruct the rating process and determine if any rating inaccuracy occurred. Various rating inaccuracies for a particular user can be stored by the verging party to detect a recurrence of rating errors. Rating profiles for particular users or group of users may be stored to enable generation of user profiles.
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Connell Richard A.
Pintsov Leon A.
Sansone Ronald P.
Schmidt Alfred C.
Cain David C.
Malandra Charles R.
Pitchenik David E.
Pitney Bowes Inc.
Scolnick Melvin J.
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