Data security using alternative encoding
A system and method for protecting text from unauthorized access. An original data set including a plurality of character code values is received, where each character code value corresponds to a respective character defined in a character definition standard. A new value corresponding to an undefined value within the character definition standard is determined for each character code value. An augmented code point-to-glyph mapping is created based on the new values with mappings between each new value and a glyph to render a character associated with the character code value. A new data set is created based on the data set and the augmented code point-to-glyph mapping by replacing character code values in the data with new values corresponding to the text character codes. The new data set and the augmented code point-to-glyph mapping are sent to a destination.
1. A method, comprising:
receiving an original data set comprising a plurality of character code values, each respective character code value corresponding to a respective character defined in a character definition standard mapping,
wherein the original data set defines data to be displayed and wherein the plurality of character code values is a subset comprising less than all of the data to be displayed, and,
wherein the plurality of character code values is within a defined portion of a display of the data to be displayed;
determining, for each character code value within the plurality of character code values, a respective new value, each respective new value corresponding to a respective undefined value within the character definition standard mapping;
modifying, based on determining the respective new value, the character definition standard mapping to create an augmented code point-to-glyph mapping, the character definition standard mapping being created by adding, to the character definition standard mapping, mappings between each respective new value and a respective glyph to render the respective character corresponding to the character code value;
creating a new data set, based on the original data set and the augmented code point-to-glyph mapping, wherein creating the new data set comprises replacing each respective character code value in the plurality of character code values with the respective new value corresponding to the respective character corresponding to the respective character code value in the original data set, and
wherein data from the original data set is stored in the new data set for character code values displayed outside of the defined portion of the display from the original data set;
sending the augmented code point-to-glyph mapping to a destination; and
sending the new data set to the destination in order to allow proper rendering at the destination of a selected portion of the defined portion of the display of the data defined by the original data set.
2. The method of claim 1 ,
wherein the original data set comprises:
a first character code indicating a presentation of a first text character, and
a second character code indicating a presentation of a second text character at a location adjacent to the presentation of the first text character,
wherein the method further comprises:
creating, while creating the new data set, a combination glyph presenting the first text character adjacent to the second text character; and
determining a substitute glyph identifier for the combination glyph, and wherein:
the modifying the character definition standard mapping further comprises mapping the substitute glyph identifier to a substitute code point value corresponding to a respective undefined value within the character definition standard mapping, and
the creating the new data set comprises replacing the first character code and the second character code in the original data set with the substitute code point value to represent the combination of the first text character adjacent to the second text character.
3. The method of claim 1 , further comprising:
receiving, from the destination subsequent to sending the new data set, a request for data comprising the augmented code point-to-glyph mapping, and
wherein the sending the augmented code point-to-glyph mapping is based on receiving the request for the data comprising the augmented code point-to-glyph mapping from the destination.
4. The method of claim 3 , wherein the sending the data comprising the augmented code point-to-glyph mapping is further based on validating that the request for the data comprising the augmented code point-to-glyph mapping is sent from the destination to which the new data set was sent.
5. The method of claim 3 , wherein creating the new data set further comprises creating the new data set that further comprises a specification of the data comprising the augmented code point-to-glyph mapping.
6. The method of claim 5 , wherein the new data set further specifies that the data comprising the augmented code point-to-glyph mapping is not to be cached.
7. The method of claim 1 , wherein the determining, for each character code value within the plurality of character code values, a respective new value comprises calculating each of the plurality of character codes values based upon a hash function.
8. A text data processing system, comprising:
a text encoding processor that when operating:
receives an original data set comprising a plurality of character code values, each respective character code value corresponding to a respective character defined in a character definition standard mapping,
wherein the original data set defines data to be displayed and wherein the plurality of character code values is a subset comprising less than all of the data to be displayed, and,
wherein the plurality of character code values is within a defined portion of a display of the data to be displayed;
determines, for each character code value within the plurality of character code values, a respective new value, each respective new value corresponding to a respective undefined value within the character definition standard mapping;
modifies, based on a determination of the respective new value, the character definition standard mapping to create an augmented code point-to-glyph mapping, the character definition standard mapping being created by adding, to the character definition standard mapping, mappings between each respective new value and a respective glyph to render the respective character corresponding to the character code value;
creates a new data set, based on the original data set and the augmented code point-to-glyph mapping, wherein the text encoding processor creates the new data set by at least replacing each respective character code value in the plurality of character code values with the respective new value corresponding to the respective character corresponding to the respective character code value in the original data set, and
wherein data from the original data set is stored in the new data set for character code values displayed outside of the defined portion of the display from the original data set; and
a data communications processor that when operating:
sends the augmented code point-to-glyph mapping to a destination; and
sends the new data set to the destination in order to allow proper rendering at the destination of a selected portion of the defined portion of the display of the data defined by the original data set.
9. The text data processing system of claim 8 ,
wherein the character code values correspond to defined code point values defined by a Unicode standard, and
wherein each respective new value is within an undefined portion of the Unicode standard.
10. The text data processing system of claim 8 ,
wherein the original data set comprises:
a first character code indicating a presentation of a first text character, and
a second character code indicating a presentation of a second text character at a location adjacent to the presentation of the first text character, wherein the text encoding processor, when operating, further:
creates, while creating the new data set, a combination glyph presenting the first text character adjacent to the second text character; and
determines a substitute glyph identifier for the combination glyph , and wherein the text encoding processor:
modifies the character definition standard mapping by mapping the substitute glyph identifier to a substitute code point value corresponding to a respective undefined value within the character definition standard mapping, and
creates the new data set by replacing the first character code and the second character code in the original data set with the substitute code point value to represent the combination of the first text character adjacent to the second text character.
11. The text data processing system of claim 8 , wherein the data communications processor, when operating:
further receives, from the destination subsequent to sending the new data set, a request for data comprising the augmented code point-to-glyph mapping,
sends the augmented code point-to-glyph mapping based on receiving the request for the data comprising the augmented code point-to-glyph mapping from the destination, and
wherein the data communications processor, when operating, sends the data comprising the augmented code point-to-glyph mapping further based on validating that the request for the data comprising the augmented code point-to-glyph mapping is sent from the destination to which the new data set was sent.
12. The text data processing system of claim 8 , wherein text encoding processor creates the new data set by creating the new data set that comprises a specification of the data comprising the augmented code point-to-glyph mapping.
13. A method comprising:
receiving a data set comprising a specification of:
data comprising an augmented code point-to-glyph mapping that comprises a standard code point-to-glyph mapping to which new code points that also correspond to characters defined in the standard code point-to-glyph mapping have been added, and
a plurality of code values corresponding to text characters to be presented on a display, each respective code value having a respective value corresponding a defined character within the augmented code point-to-glyph mapping;
requesting, based on receiving the data set, the data comprising the augmented code point-to-glyph mapping;
receiving the data comprising the augmented code point-to-glyph mapping;
presenting on the display a first presentation of the data set using the standard code point-to-glyph mapping;
receiving, subsequent to presenting on the display the first presentation, an indication of a specified location on the display; and
modifying the first presentation by modifying, based on receiving the indication and based on the augmented code point-to-glyph mapping, presentation of text character codes presented within a protected area of the first presentation to present glyphs defined by the augmented code point-to-glyph mapping in order to proper render text character codes presented within the protected area of the first presentation, where the protected area is based on the specified location, wherein the protected area is a defined portion of the first presentation that is smaller than the first presentation.
14. The method of claim 13 , wherein the standard code point-to-glyph mapping is based on a standard code point-to-glyph mapping defined by a Unicode standard, and
the augmented code point-to-glyph mapping comprises the standard code point-to-glyph mapping and the new code points are added within private use areas defined by the Unicode standard.
15. The method of claim 13 , wherein a location of the defined portion comprising the protected area is based on the specified location, and
wherein receiving the indication comprises receiving an input associated with presenting the display.
16. The method of claim 15 , wherein receiving the input comprises receiving a pointer location presented on the display, and wherein the protected area is based on the pointer location.
17. The method of claim 15 ,
wherein the display comprises a touch sensitive input,
wherein receiving the input comprises receiving a touch input at a location of the display, and
wherein the protected area is based on the location.