snarkyjs-elgamal/build/src/Add.js

This repository implements Elgmal, a partial homomorphic encryption scheme originally described by [Taher Elgamal in 1985](https://caislab.kaist.ac.kr/lecture/2010/spring/cs548/basic/B02.pdf). This implementation includes the original version of Elgamal,

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import { Field, SmartContract, state, State, method } from 'snarkyjs';
/**
 * Basic Example
 * See https://docs.minaprotocol.com/zkapps for more info.
 *
 * The Add contract initializes the state variable 'num' to be a Field(1) value by default when deployed.
 * When the 'update' method is called, the Add contract adds Field(2) to its 'num' contract state.
 *
 * This file is safe to delete and replace with your own contract.
 */
export class Add extends SmartContract {
    constructor() {
        super(...arguments);
        this.num = State();
    }
    init() {
        super.init();
        this.num.set(Field(1));
    }
    update() {
        const currentState = this.num.get();
        this.num.assertEquals(currentState); // precondition that links this.num.get() to the actual on-chain state
        const newState = currentState.add(2);
        this.num.set(newState);
    }
}
__decorate([
    state(Field),
    __metadata("design:type", Object)
], Add.prototype, "num", void 0);
__decorate([
    method,
    __metadata("design:type", Function),
    __metadata("design:paramtypes", []),
    __metadata("design:returntype", void 0)
], Add.prototype, "update", null);
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