The theory of an implicit social contract is also under the principles of explicit consent.  The main difference between tacit consent and explicit consent is that explicit consent should not leave room for misinterpretation. In addition, you should indicate directly what you want and the person must react in a concise manner that confirms or rejects the proposal. Philip Pettit (1945) argued in Republicanism: A Theory of Freedom and Government (1997) that the theory of the social contract, which is classically based on the approval of the governed, should be modified. Instead of arguing for explicit consent that can always be produced, Pettit argues that the absence of effective rebellion against it is the only legitimacy of a treaty. In his rock edicts, the Buddhist king Asoka is said to have spoken out in favour of a broad and extensive social contract. The Buddhist Vinaya also reflects the social contracts expected by the monks; Such a case is when the people of a particular city complain of monks cutting down saka trees, the Buddha tells his monks that they must stop and give way to social norms. While Roussau`s social contract is based on popular sovereignty and not on individual sovereignty, there are other theories supported by individualists, libertarians and anarchists, which involve only negative rights and create only a limited state, if any. You say that it is naturally good to do injustice; To suffer injustice, evil; but that evil is greater than good. And if people have done wrong and suffered wrongs and experienced both, have not been able to avoid one and get the other, they think they better agree with each other that they have neither; As a result, laws and mutual alliances are emerging; and what is ordered by law is described by them as legitimate and just. They confirm it as the origin and nature of justice; – it is one way or another, between the best of all, which is to do injustice and not be punished, and the worst of all which is to suffer injustice without the power of retaliation; and justice, which is at the centre of both, is not tolerated as a good, but as a lesser evil and honored by the inability of men to do harm. For no one worthy of being called a human being would ever submit to such an arrangement if he could resist; He would be crazy if he did.
This is the Socrates report on the nature and origin of justice.  Quentin Skinner argued that several critical modern innovations in contract theory are found in the writings of French Calvinists and Huguenots, whose work was in turn led by writers in the Netherlands who opposed their submission to Spain and later to Catholics in England.  Francisco Suarez (1548-1617), of the Salamanca school, could be considered a former social contract theorist, who theorized natural law by trying to limit the divine right of absolute monarchy.