Secure Encryption and Decryption using Play Color Cipher

The threats to information security areincreasing at very rapidly. The most effective and universal approach to counter such threats is encryption. In Traditional encryption techniques substitution and transposition is used. In Substitution techniques plaintext is mapped into ciphrtext. In all traditional substitution techniques plaintext characters, numbers and special symbols are substituted with another characters, numbers and special symbols. In this new method an innovative cryptographic substitution is proposed to generate a stronger cipher than the existing substitution algorithms. This method focus on the substitution of characters, numbers and special symbols with color blocks. This algorithm of substitution is based on Play Color Cipher. This is a symmetrical system which is implemented by encryption of text by converting it into colors. Each character of the plaintext is encrypted into a block of color. Every character will be substituted by a different color block. To produce the original text inverse process is used using color block.