feat: implement bcrypt algorithm

tests/test_algorithms.py

@@ -52,3 +52,17 @@ def test_argon2_algorithm_identifier():
     """Verify Argon2 algorithm has correct identifier."""
     algo = get_algorithm("argon2")
     assert algo.identifier == "argon2"
+
+
+def test_bcrypt_algorithm_hash_round_trip():
+    """Verify bcrypt algorithm can hash and verify passwords."""
+    algo = get_algorithm("bcrypt")
+    salt, hashed = algo.hash("test password")
+    assert algo.verify("test password", salt, hashed)
+    assert not algo.verify("wrong password", salt, hashed)
+
+
+def test_bcrypt_algorithm_identifier():
+    """Verify bcrypt algorithm has correct identifier."""
+    algo = get_algorithm("bcrypt")
+    assert algo.identifier == "bcrypt"