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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11039036 B1

PDFFull Text
Date of Patent:
Jun. 15, 2021

Filed:

Oct. 21, 2016

Encrypting and decrypting postscript language

Applicant:

Hydragraphix Llc, New York, NY (US);

Inventors:

Kenneth E. Irwin, Jr., Dawsonville, GA (US);

Fred W. Finnerty, Dawsonville, GA (US);

Assignee:

Hydragraphix LLC, New York, NY (US);

Attorney:

Neal, Gerber & Eisenberg LLP

Primary Examiner:

Harris C Wang

Int. Cl.
CPC ...
H04N 1/32 (2006.01); H04L 9/06 (2006.01); H04L 9/08 (2006.01); B41M 3/14 (2006.01); G06K 15/02 (2006.01); G06K 15/00 (2006.01); G06F 3/12 (2006.01); H04N 1/44 (2006.01); G09C 5/00 (2006.01); G07C 15/00 (2006.01); A63F 3/06 (2006.01); B41M 5/00 (2006.01); G07F 17/32 (2006.01); B41F 19/00 (2006.01); B41J 2/04 (2006.01);
U.S. Cl.
CPC ...
H04N 1/32272 (2013.01); A63F 3/0655 (2013.01); A63F 3/0665 (2013.01); B41M 3/14 (2013.01); B41M 5/0047 (2013.01); G06F 3/1222 (2013.01); G06F 3/1238 (2013.01); G06F 3/1243 (2013.01); G06F 3/1298 (2013.01); G06K 15/1834 (2013.01); G06K 15/1855 (2013.01); G06K 15/4095 (2013.01); G07C 15/00 (2013.01); G07C 15/005 (2013.01); G07C 15/006 (2013.01); G07F 17/329 (2013.01); G09C 5/00 (2013.01); H04L 9/0618 (2013.01); H04L 9/0656 (2013.01); H04L 9/0863 (2013.01); H04L 9/0869 (2013.01); H04N 1/32229 (2013.01); H04N 1/4486 (2013.01); A63F 2003/066 (2013.01); B41F 19/007 (2013.01); B41J 2/04 (2013.01); B41P 2200/12 (2013.01);
Abstract

A method of encrypting at least a portion of PostScript vector language, where the PostScript vector language includes a cleartext portion and a ciphertext portion, the method including: (a) encrypting at least a part of the PostScript cleartext portion via an encryption algorithm with a generated encryption key resulting in at least a part of the ciphertext portion and overwriting the PostScript cleartext portion with the resulting at least part of the ciphertext portion; (b) saving the encryption key in a file separate from a file containing the PostScript vector language; (c) linking both the encryption key file and the PostScript file in an image processor interpreting the PostScript vector language to display or print PostScript graphics; (d) decrypting the at least part of the ciphertext portion resulting in decrypted PostScript cleartext; and (e) executing the resulting decrypted Postscript cleartext to produce an image on a document or screen.

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