Unicode Encipherment Transcoding for Cryptographic Encoding Mismatch
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Solution Overview
Problem
There is a mismatch in handling character data between C and JavaScript, particularly in cryptography, where JavaScript's handling of Unicode character encodings can lead to inappropriate encoding issues due to its treatment of characters as atomic entities, unlike C which relies on binary data, causing errors in cryptographic algorithms.
Innovation Solution
A method and apparatus for transcoding Unicode character data into an intermediate value, which is then enciphered and converted back to a Unicode-compatible format for secure transport and processing, utilizing techniques such as assembling character values into blocks and using compact representations like AES encryption and base-64 encoding to address the encoding mismatch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If JavaScript treats characters as atomic entities without encoding composition, then character handling is simplified, but encoding accuracy deteriorates leading to inappropriate encodings in cryptographic operations
Solution Approach 1:
The patent introduces an intermediary encoding/decoding layer that translates between JavaScript's atomic character representation and proper Unicode byte sequences. This mediator component handles the conversion automatically, allowing JavaScript to maintain its simple atomic character model while ensuring accurate Unicode encoding through the intermediary translation layer.
Solution Approach 2:
The patent changes the representation parameters of character data by implementing functions that convert between different encoding formats (UTF-8, UTF-16, etc.). By dynamically adjusting the encoding parameters based on the cryptographic operation requirements, the system maintains both simplicity and accuracy - JavaScript sees simple characters while the underlying representation adapts to ensure proper encoding.
2Productivity
If C uses binary data with external system management for character encoding, then cryptographic operations are efficient, but portability across different systems deteriorates due to encoding mismatches
Solution Approach 1:
The patent implements universal encoding handling functions that work across multiple Unicode formats (UTF-8, UTF-16, UTF-32) and different programming languages (C, JavaScript, Python). These multi-functional utilities provide a common interface for character encoding operations, allowing the same cryptographic code to operate efficiently across different systems without modification while maintaining proper encoding through the universal handling layer.
3Device complexity
If JavaScript programs directly pass byte values to String.fromCharCode(), then code is concise, but encoding correctness deteriorates producing inappropriate character strings
Solution Approach 1:
The patent applies preliminary encoding validation and conversion before passing data to String.fromCharCode(). The utility functions pre-process the input data to ensure it is in the correct format (proper Unicode code points rather than raw bytes), performing the encoding preparation in advance so that the subsequent String.fromCharCode() call produces correct results without requiring complex validation logic in the main program flow.
Data Source
AI summary
Unicode character data is received for transcoding. The Unicode character data is transcoded to an intermediate value. The intermediate value is enciphered. The enciphered intermediate value is transcoded back to Unicode-compatible character data. The transcoding includes assembling character values from the Unicode character data into one or more blocks and representing the assembled character values in a compact form.