DEVELOPMENT OF SECURE AND EFFICIENT HYBRID CRYPTOSYSTEM

Abstract

Cryptography is the science of using mathematics to encrypt and decrypt data. Cryptography enables you to store sensitive information or transmit it across insecure networks (like the Internet) so that it cannot be read by anyone except the intended recipient. Theoretically speaking, no crypto system is completely unbreakable. However, as the complexity of the crypto algorithm increases it becomes practically impossible to the crypto analyst to break. Aim is to make secure cryptosystem .Traditional private key algorithms like DES increases the length of the cipher key to resist the brute force attacks. Though increasing the key length is a simple solution. As the length of the key increases the time to encrypt and Decrypt the input will drastically increase. More over, there is a problem in sending these lengthy keys; to avoid this two crypto system have been implemented: 1)Symmetric key Cryptosystem 2)Public key cryptosystem. Public Key cryptosystem has been made using elliptic cu...