Stuart Itkin and Josephine Martell. A PDF417 primer: A guide to understanding second generation bar codes and portable data files. Technical Report Monograph 8, Symbol Technologies, April 1992.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....must be easily printable by commodity or after market laser printers, it must be easily scanned and re digitized at a post office, and it must have sufficient information density to encode all the bits of the indicia on the envelope within a reasonable amount of space. Symbol Technologies PDF417 [26, 37, 38], for example, can encode 400 bytes per square inch, sufficient for cryptographic indicia. Figure 3 shows an example of PDF417 s density. Six lines of 40 full ASCII characters for each address, 6 four bytes each for hierarchical authorization number, a serial number for the software instance ....

Stuart Itkin and Josephine Martell. A PDF417 primer: A guide to understanding second generation bar codes and portable data files. Technical Report Monograph 8, Symbol Technologies, April 1992.

....whenever postage is printed. Now, the secure coprocessor prepares a cryptographically signed message that contains envelope data (sender address, receiver address, date sent, and sequence number) This information is then printed on the envelope using an efcient data representation such as PDF 417 [11]. Figure 3 shows Lincolns Gettysburg address encoded in PDF 417. PDF 417 normally encodes 400 bytes per square inch. When mail is received at a postal sorting facility, the data block is checked to see if they match the address used for sorting, and to verify the uniqueness of the sequence ....

S. Itkin and J. Martell. A PDF417 Primer: A Guide to Understanding Second Generation Bar Codes and Portable Data Files. Technical Report Monograph 8, Symbol Technologies. April 1988

....printed on an envelope as a 2 D barcode 4 . Such barcodes can be printed using commodity laser printers, and they can be scanned and re digitized at a post office. Several 2 D barcode technologies exist; figure 2 shows Lincoln s Gettysburg Address encoded in Symbol Technologies PDF417 barcode [5, 12, 13]. PDF417 can store 400 bytes per square inch. Central to the security of cryptographic indicia is checking indicia validity. Section 5 addresses this important issue. 5 Indicia Design What type of cryptographic signature algorithm should we use Most cryptographic signature algorithms require ....

Stuart Itkin and Josephine Martell. A PDF417 primer: A guide to understanding second generation bar codes and portable data files. Technical Report Monograph 8, Symbol Technologies, April 1992.

....printed on an envelope as a 2 D barcode 4 . Such barcodes can be printed using commodity laser printers, and they can be scanned and re digitized at a post office. Several 2 D barcode technologies exist; figure 2 shows Lincoln s Gettysburg Address encoded in Symbol Technologies PDF417 barcode [5, 12, 13]. PDF417 can store 400 bytes per square inch. Central to the security of cryptographic indicia is checking indicia validity. Section 5 addresses this important issue. 5 Indicia Design What type of cryptographic signature algorithm should we use Most cryptographic signature algorithms require ....

Stuart Itkin and Josephine Martell. A PDF417 primer: A guide to understanding second generation bar codes and portable data files. Technical Report Monograph 8, Symbol Technologies, April 1992.

....laser printers, it must be easily scanned and re digitized at a post office, and it must have sufficient information density to encode all the bits of the stamp on the envelope within a reasonable amount of space. Appropriate technologies include Code49 [62] Code16K [43] and PDF417 [42, 65, 66]. Symbol Technologies PDF417, in particular, is capable of encoding at a density of 400 bytes per square inch, which is sufficient for the size of cryptographic stamps needed to provide the necessary security in the foreseeable future. Figure 3.3 shows the amount of information that can be ....

Stuart Itkin and Josephine Martell. A PDF417 primer: A guide to understanding second generation bar codes and portable data files. Technical Report Monograph 8, Symbol Technologies, April 1992.

.... after market laser printers, it must be easily scanned and re digitized at a post office, and it must have sufficient information density to encode all the bits of the stamp on the envelope within a reasonable amount of space. Appropriate technologies include Code49[18] Code16K[12] and PDF417 [21, 20, 11]. Symbol Technologies PDF417, in particular, is capable of encoding at a density of 400 bytes per square inch, which is sufficient for the size of cryptographic stamps needed to provide the necessary security in the foreseeable future. Figure 2 demonstrates the amount of information that can be ....

Stuart Itkin and Josephine Martell. A PDF417 primer: A guide to understanding second generation bar codes and portable data files. Technical Report Monograph 8, Symbol Technologies, April 1992.

....postage is printed. Now, the secure coprocessor prepares a cryptographically signed message that contains envelope data (sender address, receiver address, date sent, and sequence number) This information is then printed on the envelope using an efficient data representation such as PDF 417 [11]. Figure 3 shows Lincoln s Gettysburg address encoded in PDF 417. PDF 417 normally encodes 400 bytes per square inch. When mail is received at a postal sorting facility, the data block is checked to see if they match the address used for sorting, and to verify the uniqueness of the sequence ....

S. Itkin and J. Martell. A PDF417 Primer: A Guide to Understanding Second Generation Bar Codes and Portable Data Files. Technical Report Monograph 8, Symbol Technologies. April 1988

....of some information, such as the postage value, and addresses. Figure 2: PDF417 barcode representation of The Gettysburg Address and re digitized at a post office. Several 2 D barcode technologies exist; figure 2 shows Lincoln s Gettysburg Address encoded in Symbol Technologies PDF417 barcode [3, 9, 10]. PDF417 can store 400 bytes per square inch. Central to the security of cryptographic indicia is checking indicia validity. Section 5 addresses this important issue. 5 Indicia Design What type of cryptographic signature algorithm should we use Most cryptographic signature algorithms require ....

Stuart Itkin and Josephine Martell. A PDF417 primer: A guide to understanding second generation bar codes and portable data files. Technical Report Monograph 8, Symbol Technologies, April 1992.

....must be easily printable by commodity or after market laser printers, it must be easily scanned and re digitized at a post office, and it must have sufficient information density to encode all the bits of the stamp on the envelope within a reasonable amount of space. Symbol Technologies PDF417 [26, 37, 38], for example, can encode 400 bytes per square inch, sufficient for cryptographic stamps. Figure 3 shows an example of PDF417 s density. Six lines of 40 full ASCII characters for each address, 6 four bytes each for hierarchical authorization number, a serial number for the software instance that ....

Stuart Itkin and Josephine Martell. A PDF417 primer: A guide to understanding second generation bar codes and portable data files. Technical Report Monograph 8, Symbol Technologies, April 1992.

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