viem
Version:
38 lines • 1.31 kB
JavaScript
import { hexToBytes } from '../encoding/toBytes.js';
import { bytesToHex } from '../encoding/toHex.js';
/**
* Compute the proofs for a list of blobs and their commitments.
*
* @example
* ```ts
* import {
* blobsToCommitments,
* toBlobs
* } from 'viem'
* import { kzg } from './kzg'
*
* const blobs = toBlobs({ data: '0x1234' })
* const commitments = blobsToCommitments({ blobs, kzg })
* const proofs = blobsToProofs({ blobs, commitments, kzg })
* ```
*/
export function blobsToProofs(parameters) {
const { kzg } = parameters;
const to = parameters.to ?? (typeof parameters.blobs[0] === 'string' ? 'hex' : 'bytes');
const blobs = (typeof parameters.blobs[0] === 'string'
? parameters.blobs.map((x) => hexToBytes(x))
: parameters.blobs);
const commitments = (typeof parameters.commitments[0] === 'string'
? parameters.commitments.map((x) => hexToBytes(x))
: parameters.commitments);
const proofs = [];
for (let i = 0; i < blobs.length; i++) {
const blob = blobs[i];
const commitment = commitments[i];
proofs.push(Uint8Array.from(kzg.computeBlobKzgProof(blob, commitment)));
}
return (to === 'bytes'
? proofs
: proofs.map((x) => bytesToHex(x)));
}
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