Fix typing error

Makefile

@@ -17,5 +17,4 @@ test:
 	. venv/bin/activate; cd src; python -m pytest .
 
 lint:
-	. venv/bin/activate; flake8 --ignore=E252,W504,W503 --max-line-length=120 ./src/ \
-	&& mypy --follow-imports=skip --ignore-missing-imports -p src
+	. venv/bin/activate; flake8 --config=flake8.ini ./src && mypy --config-file mypy.ini -p src

flake8.ini

@@ -0,0 +1,4 @@
+[flake8]
+max-line-length= 120
+exclude=
+ignore=E252,W504,W503

mypy.ini

@@ -0,0 +1,3 @@
+[mypy]
+follow_imports = False
+ignore_missing_imports = True

requirements.txt

@@ -38,11 +38,11 @@ click==7.0 \
 ssz==0.2.3 \
     --hash=sha256:0df31a9aef80c58fc0d5c238eb8bbd2cfe4726606c3c05e173694c5404816fdf \
     --hash=sha256:4c4689bd5fdd640a9095d67e54c9a629a56f0fbed1d556638fe37f6f61d0762e
-
-# Dependencies for the above
 eth-typing==2.2.1 \
     --hash=sha256:2f3e1f891226148898b219bd94674a9af06c2d75d8cdd8c6722227b472cbd4d4 \
     --hash=sha256:cf9e5e9fb62cfeb1027823328569315166851c65c5774604d801b6b926ff65bc
+
+# Dependencies for the above
 eth-utils==1.8.4 \
     --hash=sha256:8358318685e7a7666b148b07df3c4d409435b424dce18501e79920aa52bcaba7 \
     --hash=sha256:f398c649859cda5ef7c4ee2753468038d93be7d864de7631c06c3e73a7060649

src/utils/eth2_deposit_check.py

@@ -1,4 +1,8 @@
 import json
+from eth_typing import (
+    BLSPubkey,
+    BLSSignature,
+)
 from py_ecc.bls import G2ProofOfPossession as bls
 
 from utils.ssz import (
@@ -26,10 +30,10 @@ def verify_deposit(deposit_data_dict: dict) -> bool:
     Checks whether a deposit is valid based on the eth2 rules.
     https://github.com/ethereum/eth2.0-specs/blob/dev/specs/phase0/beacon-chain.md#deposits
     '''
-    pubkey = bytes.fromhex(deposit_data_dict['pubkey'])
+    pubkey = BLSPubkey(bytes.fromhex(deposit_data_dict['pubkey']))
     withdrawal_credentials = bytes.fromhex(deposit_data_dict['withdrawal_credentials'])
     amount = deposit_data_dict['amount']
-    signature = bytes.fromhex(deposit_data_dict['signature'])
+    signature = BLSSignature(bytes.fromhex(deposit_data_dict['signature']))
     deposit_data_root = bytes.fromhex(deposit_data_dict['signed_deposit_data_root'])
 
     # Verify deposit amount