Two key signature scheme with application to Digital Certificates

Elliptic curves offer all the features of the conventional cryptography like digital signatures, data encryption / decryption, key exchange, identification, etc. at a reduced key size. Standardized elliptic curve based signature schemes are described in ANSI X9.62, IEEE 1363-2000, etc. We propose a two key digital signature scheme using elliptic curves and compare our scheme with the standard scheme and found that with respective to brute force method our scheme is more secure. We suggest an application of the proposed two key signature scheme in Digital Certificates.