did-jwt/src/__tests__/ES256Signer.test.ts

Library for Signing and Verifying JWTs that use DIDs as issuers and JWEs that use DIDs as recipients

import { hexToBytes, base58ToBytes, base64ToBytes } from '../util.js'
import { ES256Signer } from '../signers/ES256Signer.js'

describe('Secp256r1 Signer', () => {
  it('signs data, given a hex private key', async () => {
    expect.assertions(1)
    const privateKey = '040f1dbf0a2ca86875447a7c010b0fc6d39d76859c458fbe8f2bf775a40ad74a'
    const signer = ES256Signer(hexToBytes(privateKey))
    const plaintext = 'thequickbrownfoxjumpedoverthelazyprogrammer'
    await expect(signer(plaintext)).resolves.toEqual(
      'vOTe64WujVUjEiQrAlwaPJtNADx4usSlCfe8OXHS6Np1BqJdqdJX912pVwVlAjmbqR_TMVE5i5TWB_GJVgrHgg'
    )
  })

  it('signs data: privateKey with 0x prefix', async () => {
    expect.assertions(1)
    const privateKey = '0x040f1dbf0a2ca86875447a7c010b0fc6d39d76859c458fbe8f2bf775a40ad74a'
    const signer = ES256Signer(hexToBytes(privateKey))
    const plaintext = 'thequickbrownfoxjumpedoverthelazyprogrammer'
    await expect(signer(plaintext)).resolves.toEqual(
      'vOTe64WujVUjEiQrAlwaPJtNADx4usSlCfe8OXHS6Np1BqJdqdJX912pVwVlAjmbqR_TMVE5i5TWB_GJVgrHgg'
    )
  })

  it('signs data: privateKey base58', async () => {
    expect.assertions(1)
    const privateKey = 'Gqzym8nfnxR5ZYZ3wZo8rvTwKTqGn5cJsbHnEhUZDPo'
    const signer = ES256Signer(base58ToBytes(privateKey))
    const plaintext = 'thequickbrownfoxjumpedoverthelazyprogrammer'
    await expect(signer(plaintext)).resolves.toEqual(
      'vOTe64WujVUjEiQrAlwaPJtNADx4usSlCfe8OXHS6Np1BqJdqdJX912pVwVlAjmbqR_TMVE5i5TWB_GJVgrHgg'
    )
  })

  it('signs data: privateKey base64url', async () => {
    expect.assertions(1)
    const privateKey = 'BA8dvwosqGh1RHp8AQsPxtOddoWcRY--jyv3daQK10o'
    const signer = ES256Signer(base64ToBytes(privateKey))
    const plaintext = 'thequickbrownfoxjumpedoverthelazyprogrammer'
    await expect(signer(plaintext)).resolves.toEqual(
      'vOTe64WujVUjEiQrAlwaPJtNADx4usSlCfe8OXHS6Np1BqJdqdJX912pVwVlAjmbqR_TMVE5i5TWB_GJVgrHgg'
    )
  })

  it('signs data: privateKey base64', async () => {
    expect.assertions(1)
    const privateKey = 'BA8dvwosqGh1RHp8AQsPxtOddoWcRY++jyv3daQK10o'
    const signer = ES256Signer(base64ToBytes(privateKey))
    const plaintext = 'thequickbrownfoxjumpedoverthelazyprogrammer'
    await expect(signer(plaintext)).resolves.toEqual(
      'vOTe64WujVUjEiQrAlwaPJtNADx4usSlCfe8OXHS6Np1BqJdqdJX912pVwVlAjmbqR_TMVE5i5TWB_GJVgrHgg'
    )
  })

  it('refuses wrong key size (too short)', async () => {
    expect.assertions(1)
    const privateKey = '040f1dbf0a2ca86875447a7c010b0fc6d39d76859c458fbe8f2bf775a40ad7'
    expect(() => {
      ES256Signer(hexToBytes(privateKey))
    }).toThrowError(/^bad_key: Invalid private key format.*/)
  })

  it('refuses wrong key size (double)', async () => {
    expect.assertions(1)
    const privateKey =
      '040f1dbf0a2ca86875447a7c010b0fc6d39d76859c458fbe8f2bf775a40ad74a040f1dbf0a2ca86875447a7c010b0fc6d39d76859c458fbe8f2bf775a40ad74a'
    expect(() => {
      ES256Signer(hexToBytes(privateKey))
    }).toThrowError(/^bad_key: Invalid private key format.*/)
  })
})