Encryption technique using dynamic table and block division process on binary field

In this paper a new cryptographic algorithm is proposed. Three Keys are used in this technique for encryption and decryption of data. The technique has generated an intermediate cipher which will be followed by unique random number card and block division process to produce final cipher. Composite and prime numbers are used to make the proposed algorithm more secure. Key-1 is a unique random number card and with this key an intermediate cipher text is produced. Key-2 has 5 digit random numbers. With the help of Key-2 block division process will be applied on Intermediate cipher and Key-3 will have random prime numbers which will be added to finalize the final cipher. With help of keys and following the reverse steps, plain text can be generated.