09-02-2013, 03:59 PM
A New Forward Secure Digital Signature Scheme
A New Forward Secure .pptx (Size: 134.65 KB / Downloads: 17)
Abstract
A New Forward-Secure Digital Signature Scheme is proposed in order to reform the limitations of ECDSA.
In the new scheme, although the digital signature’s private key is under the control of a one-way function and continually changed in different durations with time goes by, its public key remains the same.
The attacker could not fake the older signature even if the private key is leaked out in some period of time.
In this way this scheme makes sure of the security of signature of former phases. The validity of the new scheme is proved and the security is analyzed in the project.
Elliptic Curve Cryptography
Elliptic curve cryptography [ECC] is a public-key cryptosystem just like RSA.
Every user has a public and a private key.
Public key is used for encryption/signature verification.
Private key is used for decryption/signature generation.
Existing System:
In the existing system once the private key is generated it remains as static. With reference to the private key the Digital signature which developed based on private key will also remain static.
Proposed System:
In the proposed system the generated private key will get change dynamically with respective to a particular time period. Accordingly the Digital Signature also will get change dynamically.
Conclusion:
The new scheme is target on to ensure that, the attacker could not fake the signature of the past time even if the private key in signature is leaked out in some period of time, it insure the signature’s forward security and damage caused by leaked out key can be limited and controlled. Therefore the new scheme can be widely used in electronic commerce and so on.