[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

Diff for: ciphers/rsa_cipher.py

@@ -78,8 +78,9 @@ def encrypt_and_write_to_file(
         sys.exit(
             "ERROR: Block size is {} bits and key size is {} bits. The RSA cipher "
             "requires the block size to be equal to or greater than the key size. "
-            "Either decrease the block size or use different keys."
-            .format(block_size * 8, key_size)
+            "Either decrease the block size or use different keys.".format(
+                block_size * 8, key_size
+            )
         )
 
     encrypted_blocks = [str(i) for i in encrypt_message(message, (n, e), block_size)]
@@ -103,8 +104,9 @@ def read_from_file_and_decrypt(message_filename: str, key_filename: str) -> str:
         sys.exit(
             "ERROR: Block size is {} bits and key size is {} bits. The RSA cipher "
             "requires the block size to be equal to or greater than the key size. "
-            "Did you specify the correct key file and encrypted file?"
-            .format(block_size * 8, key_size)
+            "Did you specify the correct key file and encrypted file?".format(
+                block_size * 8, key_size
+            )
         )
 
     encrypted_blocks = []