The paper will describe various types of security issues which include confidentality,integrity and availability of data.There exists various threats to security issues traffic analysis,snooping,spoofing,denial of service attack etc. The asymmetric key encryption techniques may provide a higher level of security but compared to the symmetric key encryption Although we have existing techniques symmetric and assymetric key cryptography methods but there exists security concerns.A brief description of proposed framework is defined which uses the random combination of public and private keys.The mechanismsincludes:Integrity,Availabiity,Authentication, Nonrepudiation, Confidentiality andAccess control which is achieved by private-private key model as the user is restricted both at sender and reciever end which is restricted in other models.A review of all these systems is described in this paper.

No abstract

No abstract

No abstract

No abstract