A Forward-secure Digital Signature Scheme of ECC (Elliptic Curve Cryptography) Cryptography
Jingxin Hong · Journal of Xiamen University · 2005
In order to overcome the limitations of the ordinary digital signatures,this paper advances an ECC digital signature scheme,and then puts forward a new forward-secure digital signature scheme,which is based on the elliptic curve cryptosystem. In the new scheme,the digital signature’s private key is under the control of some one-way function and continually changed in different durations with time going by,but its public key remains the same.So the attacker still could not fake the signature of the past time even if the private key in signature is leaked out in some period of time.In this way this scheme makes sure of the security of signature of former phases.It analyzes the security of the scheme and proves the scheme’s validity.