Database Encryption Initialization Vector Embedding
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Solution Overview
Problem
Current data encryption schemes do not adequately manage initialization vectors, leading to increased administrative burdens and potential confidentiality risks in block encryption schemes.
Innovation Solution
A method and device for encrypting data using a block encryption scheme that generates an initialization vector and embeds it within the ciphertext using a specific embedding rule, eliminating the need for separate management of initialization vectors and maintaining confidentiality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If current encryption schemes are used with separate initialization vector management, then encryption functionality is provided, but administrative burden increases and confidentiality risks arise
Solution Approach 1:
The patent combines the initialization vector and ciphertext into a single encrypted data structure. The initialization vector is embedded within the ciphertext blob, eliminating the need for separate storage and management of the initialization vector, thereby reducing administrative burden while maintaining confidentiality through unified encryption.
Solution Approach 2:
The encrypted data structure serves multiple functions: it contains both the ciphertext and the initialization vector, and the embedded initialization vector can be extracted and used for decryption. This multi-functional design eliminates the need for separate initialization vector management systems.
2Ease of manufacture
If initialization vectors are managed separately from ciphertext, then encryption processes are simplified, but administrative complexity increases
Solution Approach 1:
The patent merges the initialization vector and ciphertext into a single unified structure. The encryption process remains simple as it uses standard block cipher operations, while the management complexity is reduced by eliminating separate initialization vector storage, retrieval, and synchronization systems.
3Quantity of substance
If initialization vectors are not embedded in ciphertext, then storage space is saved, but management overhead increases
Solution Approach 1:
The patent embeds the initialization vector within the ciphertext structure, adding minimal overhead (the size of the initialization vector itself) but eliminating the need for separate management systems. The encrypted data is stored as a single blob containing both components, simplifying storage and retrieval operations.
Data Source
AI summary
A method and system. An instruction to encrypt plaintext to generate encrypted data from the plaintext is received. The encrypted data is to be stored in a database device in response to a first request received from a client terminal to store the plaintext in the database device. The first request includes the plaintext. Ciphertext is generated by applying both an initialization vector and an encryption key directly to the plaintext. An embedding rule used to generate the encrypted data is selected from a sequence of embedding rules. The encrypted data is stored in the database device, A second request to receive the plaintext data is received from the client terminal. The plaintext is obtained from the encrypted data, by separating the encrypted data into the ciphertext and the initialization vector; and generating the plaintext by decrypting the ciphertext that was separated from the encrypted data.