⚰️ Drop unused external bcrypt library

data_safe_haven/functions/__init__.py

@@ -7,8 +7,6 @@
     alphanumeric,
     b64decode,
     b64encode,
-    bcrypt_encode,
-    bcrypt_salt,
     hex_string,
     password,
     random_letters,
@@ -29,11 +27,8 @@
 __all__ = [
     "allowed_dns_lookups",
     "alphanumeric",
-    "as_dict",
     "b64decode",
     "b64encode",
-    "bcrypt_encode",
-    "bcrypt_salt",
     "hex_string",
     "ordered_private_dns_zones",
     "password",

data_safe_haven/functions/strings.py

@@ -6,8 +6,6 @@
 import uuid
 from collections.abc import Sequence
 
-import bcrypt
-
 
 def alphanumeric(input_string: str) -> str:
     """Strip any characters that are not letters or numbers from a string."""
@@ -26,24 +24,6 @@ def b64encode(input_string: str) -> str:
     return base64.b64encode(input_string.encode("utf-8")).decode()
 
 
-def bcrypt_encode(input_string: str, salt: str) -> str:
-    """
-    Use bcrypt to encrypt an input string.
-    See https://en.wikipedia.org/wiki/Bcrypt#Description for structure.
-    """
-    encrypted_bytes = bcrypt.hashpw(input_string.encode(), salt.encode())
-    return encrypted_bytes.decode(encoding="utf-8")
-
-
-def bcrypt_salt() -> str:
-    """Generate a bcrypt salt as a string.
-
-    Returns:
-      $algorithm$cost$salt: str
-    """
-    return bcrypt.gensalt().decode()
-
-
 def hex_string(length: int) -> str:
     """Generate a string of 'length' random hexadecimal characters."""
     return secrets.token_hex(length)

pyproject.toml

@@ -31,7 +31,6 @@ dependencies = [
   "azure-storage-blob~=12.15",
   "azure-storage-file-datalake~=12.10",
   "azure-storage-file-share~=12.10",
-  "bcrypt~=4.0",
   "chevron~=0.14",
   "chili~=2.1",
   "cryptography~=41.0",