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Version: 2.1.x

Class: BaseProof

src.BaseProof

We build proofs using a BaseProof class that optionally supports verification. Proof data can be expressed in one of two formats:

  1. SnarkProof objects for verification by snarkjs
  2. string[] for contract verification.

The BaseProof class can be used to convert between the two formats. This class should not be used directly, but should instead be inherited.

The base class for a proof that can be verified using a Prover.

Hierarchy​

Constructors​

constructor​

• new BaseProof(publicSignals, proof, prover?)

Create a new instance of the class.

Parameters​

NameTypeDescription
publicSignals(string | bigint)[]The public signals of the proof that can be verified by the prover
proofGroth16Proof | (string | bigint)[]The proof that can be verified by the prover
prover?ProverThe prover that can verify the public signals and the proof

Example

import { BaseProof } from '@unirep/circuits'

class MyCustomProof extends BaseProof {
 constructor(publicSignals, proof, prover) {
  super(publicSignals, proof, prover)

  // Specify a circuit name for the Prover
  // This is typically a filename
  this.circuit = 'MyCustomProof'
 }
}

Defined in​

circuits/src/BaseProof.ts:63

Properties​

_snarkProof​

• Readonly _snarkProof: Groth16Proof

The proof data in Groth16Proof format. Use this when manually verifying with snarkjs.

Defined in​

circuits/src/BaseProof.ts:24

circuit​

• Protected Optional circuit: Circuit

The string name of the type of circuit this proof came from. For the BaseProof class this is undefined.

Defined in​

circuits/src/BaseProof.ts:28

proof​

• proof: bigint[]

The proof data formatted as string[]. Use this property when interacting with smart contracts.

Defined in​

circuits/src/BaseProof.ts:37

prover​

• Optional prover: Prover

The Prover object.

Defined in​

circuits/src/BaseProof.ts:41

publicSignals​

• Readonly publicSignals: bigint[]

The raw array of public signals for the proof.

Defined in​

circuits/src/BaseProof.ts:33

Methods​

verify​

▸ verify(): Promise<boolean>

A function to verify the proof with the supplied Prover. The prover property must be set either in the constructor or manually, otherwise this will throw.

Returns​

Promise<boolean>

True if the proof is valid, false otherwise

Example

const isValid: boolean = await proof.verify()

Defined in​

circuits/src/BaseProof.ts:95