def test_crypto_secretstream_xchacha20poly1305_pull_changed_ad(self):
if not pysodium.sodium_version_check(1, 0, 15): return
key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state, header = pysodium.crypto_secretstream_xchacha20poly1305_init_push(key)
ciphertext = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"howdy", b"some data", pysodium.crypto_secretstream_xchacha20poly1305_TAG_FINAL)
state2 = pysodium.crypto_secretstream_xchacha20poly1305_init_pull(header, key)
self.assertRaises(ValueError, pysodium.crypto_secretstream_xchacha20poly1305_pull, state2, ciphertext, b"different data")
def test_crypto_secretstream_xchacha20poly1305_pull_incorrect_key(self):
if not pysodium.sodium_version_check(1, 0, 15): return
key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state, header = pysodium.crypto_secretstream_xchacha20poly1305_init_push(key)
ciphertext = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"howdy", None, pysodium.crypto_secretstream_xchacha20poly1305_TAG_FINAL)
bad_key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state2 = pysodium.crypto_secretstream_xchacha20poly1305_init_pull(header, bad_key)
self.assertRaises(ValueError, pysodium.crypto_secretstream_xchacha20poly1305_pull, state2, ciphertext, None)
def test_crypto_secretstream_xchacha20poly1305_out_of_order_messeges(self):
if not pysodium.sodium_version_check(1, 0, 15): return
key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state, header = pysodium.crypto_secretstream_xchacha20poly1305_init_push(key)
ciphertext = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"Correct Horse Battery Staple", None, 0)
ciphertext2 = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"howdy", None, pysodium.crypto_secretstream_xchacha20poly1305_TAG_FINAL)
# Decrypting the second message first should fail
state2 = pysodium.crypto_secretstream_xchacha20poly1305_init_pull(header, key)
self.assertRaises(ValueError, pysodium.crypto_secretstream_xchacha20poly1305_pull, state2, ciphertext2, None)
def test_crypto_secretstream_xchacha20poly1305_pull(self):
if not pysodium.sodium_version_check(1, 0, 15): return
key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state, header = pysodium.crypto_secretstream_xchacha20poly1305_init_push(key)
ciphertext = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"howdy", None, pysodium.crypto_secretstream_xchacha20poly1305_TAG_FINAL)
state2 = pysodium.crypto_secretstream_xchacha20poly1305_init_pull(header, key)
msg, tag = pysodium.crypto_secretstream_xchacha20poly1305_pull(state2, ciphertext, None)
self.assertEqual(msg, b"howdy")
self.assertEqual(tag, pysodium.crypto_secretstream_xchacha20poly1305_TAG_FINAL)
def test_crypto_secretstream_xchacha20poly1305_missing_rekey(self):
if not pysodium.sodium_version_check(1, 0, 15): return
key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state, header = pysodium.crypto_secretstream_xchacha20poly1305_init_push(key)
# Encrypt two messages with intermediate re-key
ciphertext = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"Correct Horse Battery Staple", None, 0)
pysodium.crypto_secretstream_xchacha20poly1305_rekey(state)
ciphertext2 = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"howdy", None, pysodium.crypto_secretstream_xchacha20poly1305_TAG_FINAL)
state2 = pysodium.crypto_secretstream_xchacha20poly1305_init_pull(header, key)
msg, tag = pysodium.crypto_secretstream_xchacha20poly1305_pull(state2, ciphertext, None)
# re-key should be here, so following call should fail
self.assertRaises(ValueError, pysodium.crypto_secretstream_xchacha20poly1305_pull, state2, ciphertext2, None)
def test_crypto_secretstream_xchacha20poly1305_pull_corrupted(self):
if not pysodium.sodium_version_check(1, 0, 15): return
key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state, header = pysodium.crypto_secretstream_xchacha20poly1305_init_push(key)
ad = 'additional data'
ciphertext = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"Correct Horse Battery Staple", ad, 0)
# Verify error is raised if cypher text is changed
state2 = pysodium.crypto_secretstream_xchacha20poly1305_init_pull(header, key)
self.assertRaises(ValueError, pysodium.crypto_secretstream_xchacha20poly1305_pull, state2, ciphertext + 'this is a corruption'.encode(), ad)
# Verify error is raised if additional data is changed
ad2 = 'this is not the same'
state2 = pysodium.crypto_secretstream_xchacha20poly1305_init_pull(header, key)
self.assertRaises(ValueError, pysodium.crypto_secretstream_xchacha20poly1305_pull, state2, ciphertext, ad2)
def test_crypto_secretstream_xchacha20poly1305_pull_multiple(self):
if not pysodium.sodium_version_check(1, 0, 15): return
key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state, header = pysodium.crypto_secretstream_xchacha20poly1305_init_push(key)
ciphertext = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"Correct Horse Battery Staple", None, 0)
ciphertext2 = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"howdy", None, pysodium.crypto_secretstream_xchacha20poly1305_TAG_FINAL)
# Verify decryption
state2 = pysodium.crypto_secretstream_xchacha20poly1305_init_pull(header, key)
msg, tag = pysodium.crypto_secretstream_xchacha20poly1305_pull(state2, ciphertext, None)
msg2, tag2 = pysodium.crypto_secretstream_xchacha20poly1305_pull(state2, ciphertext2, None)
self.assertEqual(msg, b"Correct Horse Battery Staple")
self.assertEqual(tag, 0)
self.assertEqual(msg2, b"howdy")
self.assertEqual(tag2, pysodium.crypto_secretstream_xchacha20poly1305_TAG_FINAL)
def test_crypto_secretstream_xchacha20poly1305_rekey(self):
if not pysodium.sodium_version_check(1, 0, 15): return
key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state, header = pysodium.crypto_secretstream_xchacha20poly1305_init_push(key)
# Encrypt two messages with intermediate re-key
ciphertext = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"Correct Horse Battery Staple", None, 0)
pysodium.crypto_secretstream_xchacha20poly1305_rekey(state)
ciphertext2 = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"howdy", None, pysodium.crypto_secretstream_xchacha20poly1305_TAG_FINAL)
# Verify by decrypting them
state2 = pysodium.crypto_secretstream_xchacha20poly1305_init_pull(header, key)
msg, tag = pysodium.crypto_secretstream_xchacha20poly1305_pull(state2, ciphertext, None)
pysodium.crypto_secretstream_xchacha20poly1305_rekey(state2)
msg2, tag2 = pysodium.crypto_secretstream_xchacha20poly1305_pull(state2, ciphertext2, None)
self.assertEqual(msg, b"Correct Horse Battery Staple")
self.assertEqual(tag, 0)
self.assertEqual(msg2, b"howdy")
self.assertEqual(tag2, pysodium.crypto_secretstream_xchacha20poly1305_TAG_FINAL)
def test_crypto_secretstream_xchacha20poly1305_init_pull(self):
if not pysodium.sodium_version_check(1, 0, 15): return
key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state, header = pysodium.crypto_secretstream_xchacha20poly1305_init_push(key)
state2 = pysodium.crypto_secretstream_xchacha20poly1305_init_pull(header, key)
def test_crypto_secretstream_xchacha20poly1305_push(self):
if not pysodium.sodium_version_check(1, 0, 15): return
key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state, header = pysodium.crypto_secretstream_xchacha20poly1305_init_push(key)
ciphertext = pysodium.crypto_secretstream_xchacha20poly1305_push(state, b"howdy", None, 0)
def test_crypto_secretstream_xchacha20poly1305_init_pull(self):
if not pysodium.sodium_version_check(1, 0, 15): return
key = pysodium.crypto_secretstream_xchacha20poly1305_keygen()
state, header = pysodium.crypto_secretstream_xchacha20poly1305_init_push(key)
state2 = pysodium.crypto_secretstream_xchacha20poly1305_init_pull(header, key)