Image File Encryption Settings for Strength-Based Password Rules
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Solution Overview
Problem
Existing image processing apparatuses, such as multifunction peripherals, fail to ensure security corresponding to higher encryption strengths due to inadequate control over setting information like password input rules.
Innovation Solution
The apparatus includes a controller that adjusts input conditions for encryption passwords based on the selected encryption strength, ensuring appropriate security by allowing only valid password lengths for the chosen encryption algorithm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple encryption levels are provided, then encryption strength is improved, but security corresponding to higher encryption levels cannot be ensured due to inadequate control over password input rules
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting password input conditions (such as minimum and maximum password lengths) based on the selected encryption strength level. When higher encryption algorithms are chosen, the system imposes stricter password requirements, thereby changing the parameters of password validation to match the encryption level and ensure appropriate security.
2Ease of operation
If password input rules are not controlled, then ease of operation is improved, but security corresponding to encryption levels cannot be ensured
Solution Approach 1:
The patent implements dynamics by making password input rules variable rather than fixed. The validation rules for passwords dynamically adapt based on the encryption algorithm selected, allowing more flexible input for weaker algorithms while enforcing stricter rules for stronger algorithms. This dynamic adjustment ensures security appropriateness while maintaining user-friendly operation.
Data Source
AI summary
An image processing apparatus of the present disclosure includes: an acquirer that acquires image data from an image; and one or more controllers that encrypt the image data based on a key, and outputs, as a file, the image data encrypted. The one or more controllers change an input condition for input of the key based on an encryption strength for encryption of the image data.