diff --git a/third_party/2and3/cryptography/hazmat/backends/__init__.pyi b/third_party/2and3/cryptography/hazmat/backends/__init__.pyi
index 4e6d67af3..d452202ee 100644
--- a/third_party/2and3/cryptography/hazmat/backends/__init__.pyi
+++ b/third_party/2and3/cryptography/hazmat/backends/__init__.pyi
@@ -1,3 +1,6 @@
 from typing import Any
 
 def default_backend() -> Any: ...
+
+# TODO: add some backends
+def __getattr__(name: str) -> Any: ...
diff --git a/third_party/2and3/cryptography/hazmat/primitives/asymmetric/ec.pyi b/third_party/2and3/cryptography/hazmat/primitives/asymmetric/ec.pyi
index af2893e8b..f8b7e1638 100644
--- a/third_party/2and3/cryptography/hazmat/primitives/asymmetric/ec.pyi
+++ b/third_party/2and3/cryptography/hazmat/primitives/asymmetric/ec.pyi
@@ -17,118 +17,80 @@ class EllipticCurve(metaclass=ABCMeta):
     def name(self) -> str: ...
 
 class BrainpoolP256R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class BrainpoolP384R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class BrainpoolP512R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECP192R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECP224R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECP256K1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECP256R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECP384R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECP521R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECT163K1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECT163R2(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECT233K1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECT233R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECT283K1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECT283R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECT409K1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECT409R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECT571K1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class SECT571R1(EllipticCurve):
-    @property
-    def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    key_size: int = ...
+    name: str = ...
 
 class EllipticCurveOID(object):
     SECP192R1: ClassVar[ObjectIdentifier]
diff --git a/third_party/2and3/cryptography/hazmat/primitives/ciphers/algorithms.pyi b/third_party/2and3/cryptography/hazmat/primitives/ciphers/algorithms.pyi
index 41940d54e..62359b746 100644
--- a/third_party/2and3/cryptography/hazmat/primitives/ciphers/algorithms.pyi
+++ b/third_party/2and3/cryptography/hazmat/primitives/ciphers/algorithms.pyi
@@ -1,55 +1,53 @@
 from cryptography.hazmat.primitives.ciphers import BlockCipherAlgorithm, CipherAlgorithm
 from cryptography.hazmat.primitives.ciphers.modes import ModeWithNonce
 
+from typing import FrozenSet
+
 class AES(BlockCipherAlgorithm, CipherAlgorithm):
     def __init__(self, key: bytes) -> None: ...
-    @property
-    def block_size(self) -> int: ...
+    block_size: int = ...
+    name: str = ...
+    key_sizes: FrozenSet[int] = ...
     @property
     def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
 
 class ARC4(CipherAlgorithm):
     def __init__(self, key: bytes) -> None: ...
     @property
     def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    name: str = ...
+    key_sizes: FrozenSet[int] = ...
 
 class Blowfish(BlockCipherAlgorithm, CipherAlgorithm):
     def __init__(self, key: bytes) -> None: ...
     @property
-    def block_size(self) -> int: ...
-    @property
     def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    block_size: int = ...
+    name: str = ...
+    key_sizes: FrozenSet[int] = ...
 
 class Camelia(BlockCipherAlgorithm, CipherAlgorithm):
     def __init__(self, key: bytes) -> None: ...
     @property
-    def block_size(self) -> int: ...
-    @property
     def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    block_size: int = ...
+    name: str = ...
+    key_sizes: FrozenSet[int] = ...
 
 class CAST5(BlockCipherAlgorithm, CipherAlgorithm):
     def __init__(self, key: bytes) -> None: ...
     @property
-    def block_size(self) -> int: ...
-    @property
     def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    block_size: int = ...
+    name: str = ...
+    key_sizes: FrozenSet[int] = ...
 
 class ChaCha20(CipherAlgorithm, ModeWithNonce):
     def __init__(self, key: bytes, nonce: bytes) -> None: ...
     @property
     def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    name: str = ...
+    key_sizes: FrozenSet[int] = ...
     @property
     def nonce(self) -> bytes: ...
 
@@ -57,23 +55,22 @@ class IDEA(CipherAlgorithm):
     def __init__(self, key: bytes) -> None: ...
     @property
     def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    block_size: int = ...
+    name: str = ...
+    key_sizes: FrozenSet[int] = ...
 
 class SEED(BlockCipherAlgorithm, CipherAlgorithm):
     def __init__(self, key: bytes) -> None: ...
     @property
-    def block_size(self) -> int: ...
-    @property
     def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    block_size: int = ...
+    name: str = ...
+    key_sizes: FrozenSet[int] = ...
 
 class TripleDES(BlockCipherAlgorithm, CipherAlgorithm):
     def __init__(self, key: bytes) -> None: ...
     @property
-    def block_size(self) -> int: ...
-    @property
     def key_size(self) -> int: ...
-    @property
-    def name(self) -> str: ...
+    block_size: int = ...
+    name: str = ...
+    key_sizes: FrozenSet[int] = ...