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Abstract
The unrelated problems in distributed computing, cryptography and complexity theory were discussed. First problem dealt with the selective decommitment in which an adversary was given commitment to a collection of messages and the adversary can ask for some subsets of the commitments to open. Second problem dealt with the power of 3-round weak zero-knowledge arguements which states what can be proved in zero-knowledge in a 3-round arguement. The third problem dealt with the method of converting a 3-round public -coin arguement to a 1-round signature scheme.