Mitsubishi Electric develops string-searchable encryption software

Mitsubishi Electric announced the development of industry's first string-searchable encryption software that enables both partial-match searching of encrypted data without decryption in cloud services and access control to ensure information security. Mitsubishi Electric said it plans to introduce its new software in products in the fiscal year 2018 ending March, 2018. Below is the further details shared by Mitsubishi on this development: The new software encrypts each character of the registered data and searched keywords. Simultaneously, character position information showing how far the encrypted character is located from the beginning character is embedded into the corresponding ciphertext. The embedded character position can be transposed to match any encrypted text without decryption. In the existing software, character position and other information cannot be embedded in the ciphertext, limiting search results to inflexible exact matches. The new software uses embedded character position information to check if the encrypted keyword exactly matches its corresponding encrypted string of registered data. Character position information helps to facilitate partial-match searches of encrypted data. Whereas the existing software limits the length of registered data and availability of keywords, the new software does not have such restrictions and therefore can be us...