@polkadot/util-crypto/secp256k1/compress.js

A collection of useful crypto utilities for @polkadot

import { secp256k1 } from '@noble/curves/secp256k1';
import { hasBigInt } from '@polkadot/util';
import { isReady, secp256k1Compress as wasm } from '@polkadot/wasm-crypto';
export function secp256k1Compress(publicKey, onlyJs) {
    if (![33, 65].includes(publicKey.length)) {
        throw new Error(`Invalid publicKey provided, received ${publicKey.length} bytes input`);
    }
    if (publicKey.length === 33) {
        return publicKey;
    }
    return !hasBigInt || (!onlyJs && isReady())
        ? wasm(publicKey)
        : secp256k1.ProjectivePoint.fromHex(publicKey).toRawBytes(true);
}