@Test
public void validateKey_validKeyWithSalt_works() throws Exception {

  manager.validateKey(
      HkdfPrfKey.newBuilder()
          .setVersion(0)
          .setKeyValue(ByteString.copyFrom(Random.randBytes(32)))
          .setParams(
              HkdfPrfParams.newBuilder()
                  .setSalt(ByteString.copyFrom(Random.randBytes(5)))
                  .setHash(HashType.SHA256))
          .build());
}