def test_localization_of_pseudonym(self):
    name = b" a 16 byte name "
    target = b"PEP3 storage_facility"

    pp = pep3_pb2.Pseudonymizable(data=name,
                                  state=pep3_pb2.Pseudonymizable.UNENCRYPTED_NAME)

    self.collector.pseudonymize([pp])
    self.collector.relocalize([pp],
                              self.config.collector.warrants.to_sf)

    sfp = elgamal.Triple.unpack(pp.data) \
        .decrypt(self.sf.private_keys['pseudonym'])

    pseudonym_secrets = {}
    for peer_secrets in self.secrets.peers.values():
        for shard, shard_secrets in peer_secrets.by_shard.items():
            pseudonym_secrets[shard] \
                = shard_secrets.pseudonym_component_secret

    s = 1
    e = ed25519.scalar_unpack(common.sha256(target))
    for secret in pseudonym_secrets.values():
        s *= pow(ed25519.scalar_unpack(secret), e, ed25519.l)
        s %= ed25519.l

    self.assertEqual(
        sfp * ed25519.scalar_inv(s),
        ed25519.Point.lizard(name))