@bsv/sdk/src/primitives/__tests/BigNumber.dhGroup.test.ts

BSV Blockchain Software Development Kit

/* eslint-env jest */
import BigNumber from '../../primitives/BigNumber'
import ReductionContext from '../../primitives/ReductionContext'
import { dhGroups } from './BigNumber.fixtures'

describe('BN.js/Slow DH test', () => {
  Object.keys(dhGroups).forEach(function (name) {
    it(
      'should match public key for ' + name + ' group',
      () => {
        const group = dhGroups[name]
        const base = new BigNumber(2)
        const mont = new ReductionContext(new BigNumber(group.prime, 16))
        const priv = new BigNumber(group.priv, 16)
        const multed = base.toRed(mont).redPow(priv).fromRed()
        const actual = Buffer.from(multed.toArray())
        expect(actual.toString('hex')).toEqual(group.pub)
      },
      3600 * 1000
    )
  })
})