7. A Detailed View on SecureString 3.0

These days, vicious globally playing enterprises and various culprits try to exploit individuals’ sensitive data whenever opportunities arise. Public clouds and private users with low (or even no) security awareness facilitate such malefactions. On account of this, a rational data owner’s trust in public clouds should reach the level semi-honest or semi-honest-but-curious at best due to their uncertainty of the location(s) of their data respectively of undesired access on them. The homomorphic cryptosystem SecureString 3.0 remedies to recapture the cloud users’ faith in secure cloud computing on encrypted character strings by combining the paradigms blind computing and secret sharing. While existing literature already covers the principles of SecureString 3.0, herein, the adduced implementation details of this cryptosystem given in pseudocode allow researchers to realize their own prototypes and practitioners to integrate SecureString 3.0 in their own security solutions. Decent security and performance analyses prove the applicability of this cryptosystem in the field, e.g., for secure instant messaging sifters.