US 12,244,577 B1
Patternless obfuscation of data with low-cost data recovery
Kristine Poghosyan, Morgan Hill, CA (US)
Assigned to Akamai Technologies, Inc., Cambridge, MA (US)
Filed by Akamai Technologies, Inc., Cambridge, MA (US)
Filed on Dec. 11, 2023, as Appl. No. 18/535,884.
Application 18/535,884 is a continuation of application No. 17/644,018, filed on Dec. 13, 2021, granted, now 11,848,919.
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 9/40 (2022.01)
CPC H04L 63/0428 (2013.01) 15 Claims
OG exemplary drawing
 
1. A method for a sending device to obfuscate at least a portion of a message to be sent to a recipient device, comprising:
receiving one or more field values for transmission to a recipient device in a message sent over a computer network;
selecting a dictionary from a plurality of dictionaries based at least in part on an attribute of the message to be sent to the recipient device, where the selected dictionary maps each of the one or more field values to a plurality of sets of characters, each set having one or more characters;
for each of the one or more field values, pseudo-randomly selecting one of the plurality of sets of characters given by the selected dictionary;
replacing each of the one or more field values with the selected set of characters for the respective field value, to create an obfuscated string; and,
inserting the obfuscated string in the message and transmitting the message to the recipient device.