• Subgroup membership problems and public key cryptosystems 

      Gjøsteen, Kristian (Doktoravhandlinger ved NTNU, 1503-8181; 2004:69, Doctoral thesis, 2004)
      Public key encryption was first proposed by Diffie and Hellman [16], and widely popularised with the RSA cryptosystem [37]. Over the years, the security goals of public key encryption have been studied [17, 22], as have ...