This work represents the design of a Key Generating Algorithm based on DNA Cryptography focused on providing an extra layer of security for protecting the key. An illegal proficient exercise, i.e., data theft during communications, is still going on and attempts are constantly being made in this area to break the encrypted data before reaching it to the authorized destination by some Cryptanalyst. On the other end, there is a lot of research going on to render the data safe through encrypting them during communication and a complex key generation process for decrypting encrypted data. Many latest attacks are made by learning the patterns of the key. So, to improve the security and to optimize the design, this approach generates DNA string as the key that provides enhanced security. The notion of using DNA computing in cryptography has been recognized as a potential breakthrough that might meet a new need for unbreakable algorithms. DNA Key Generating Algorithm has been developed for more secure data concealing and symmetric key generation utilizing genetic databases. The proposed algorithm is implemented using Verilog coding, simulated using Vivado simulator and synthesized using Vivado 2017.4.