To make complexity in cryptanalysis for all the types of attacks such as brute force, eavesdropping, man-in-middle attack and sniffer attack. VSR network security algorithm provides high security with key size greater than 1024 bits. It reduces time taken for encryption and less memory usage and very complex to decrypt original plaintext for all types of attackers. It provides confidentiality, authentication, data integrity and access control. The main objective of this VSR security algorithm is secret key cryptography where more number of keys is shared for each stream of data and it is used to enhance complexity of encryption of private key, increased key size and encryption of symmetric stream cipher.