INTEGRATING THRESHOLD OPENING WITH THRESHOLD ISSUANCE OF ANONYMOUS CREDENTIALS OVER BLOCKCHAINS FOR A MULTI-CERTIFIER COMMUNICATION MODEL

Authentication while maintaining anonymity when availing a service over the internet is a significant privacy challenge.Anonymous credentials (AC) address this by providing the user with a credential issued by a trusted entity that convinces the service provider ( $mathcal {SP}$ ) that the user is authenticated but reveals no other information.The