Published Paper Details:

In the Polygram substitution technique, one block of alphabets is replaced by another block. The model is proposed for computationally secure online secret sharing, which allows dynamic modification of the secret and addition of participants without the need to secretly distribute the new shares to the current participants. The security of the method is based on the intractability of factoring. This can be achieved by a simple graphical masking method that includes two phases: Encryption of the individual secrets and sharing of the data. The generation of the shares is done by a simple masking technique using Polygram substitution, and the reconstruction can be done by a simple unmasking of the qualified shares. The generated shares are encrypted and each encrypted share contains partial secret information, which leads to additional protection of secret data on the Internet. Moreover, we achieve efficient recovery of the original secret data.