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Secret sharing is a technique for protecting sensitive data like cryptographic keys. This mechanism is used to distribute a secret value to a number of parties or users called shares. The shares are given to the parities or users involved in the group. These values have to be combined together to access the original values. Secret sharing is used in modern cryptography algorithms to reduce the risk in information leakage. Sharing a secret reduce the risk of compromising the value across several parties. Threshold or group oriented cryptography allows a group of users perform cryptographic...

This text is a comprehensive study on password based authentication schemes in smart card applications. This study will provide an overview of authentication schemes and provide an new directions for the young researcher in authentication protocol design. This text covers following areas: RSA based password authentication schemes, ECC based password authentication schemes, ElGamal based password authentication schemes and Hash based password authentication schemes