A Comparative Study on Visual Cryptography Method for Handwriting Image Security

The secret sharing protocol is a method used to divide or break a secret message into 2 (two) or more recipients, so that the results of these shares are not known to the secret recipients unless the recipients exchange shares for reconstructing the secret. This study aims to analyze the performance of the Asmuth-Bloom secret sharing protocol, secret splitting, and visual cryptography. Although the attacker gets shares shadow at the share exchange, the party must merge the shares shadow. It would be impossible for the attacker to know the correct share, despite adequate computer resources. This study also analyzes the results of the comparison of the three methods: secret splitting, secret sharing, and recursive threshold visual cryptography for image handwriting security. Simulation results show the difference in execution time among the three methods.