Cryptanalysis of braid groups based authentication schemes

Authentication is a cryptographic technique to correctly identify the communicating parties for secure communication. The braid group based cryptographic schemes are treated as post-quantum secure schemes, which are popular nowadays for developing the stronger key generation for authentication and for public key cryptosystem. In this paper, we cryptanalyze the Lal and Chaturvedi´s braid group based authentication schemes and show them to be insecure. In addition, we propose two new authentication schemes by overcoming their shortcomings and through the security analysis, we show that our propose schemes are secure.