[aes] simplify 'block_count' calculation

abfb3e2277

gallery_dl/aes.py

@@ -78,7 +78,7 @@ def aes_ecb_encrypt(data, key, iv=None):
     @returns {int[]}           encrypted data
     """
     expanded_key = key_expansion(key)
-    block_count = int(ceil(float(len(data)) / BLOCK_SIZE_BYTES))
+    block_count = ceil(len(data) / BLOCK_SIZE_BYTES)
 
     encrypted_data = []
     for i in range(block_count):
@@ -99,7 +99,7 @@ def aes_ecb_decrypt(data, key, iv=None):
     @returns {int[]}           decrypted data
     """
     expanded_key = key_expansion(key)
-    block_count = int(ceil(float(len(data)) / BLOCK_SIZE_BYTES))
+    block_count = ceil(len(data) / BLOCK_SIZE_BYTES)
 
     encrypted_data = []
     for i in range(block_count):
@@ -132,7 +132,7 @@ def aes_ctr_encrypt(data, key, iv):
     @returns {int[]}           encrypted data
     """
     expanded_key = key_expansion(key)
-    block_count = int(ceil(float(len(data)) / BLOCK_SIZE_BYTES))
+    block_count = ceil(len(data) / BLOCK_SIZE_BYTES)
     counter = iter_vector(iv)
 
     encrypted_data = []
@@ -158,7 +158,7 @@ def aes_cbc_decrypt(data, key, iv):
     @returns {int[]}           decrypted data
     """
     expanded_key = key_expansion(key)
-    block_count = int(ceil(float(len(data)) / BLOCK_SIZE_BYTES))
+    block_count = ceil(len(data) / BLOCK_SIZE_BYTES)
 
     decrypted_data = []
     previous_cipher_block = iv
@@ -184,7 +184,7 @@ def aes_cbc_encrypt(data, key, iv):
     @returns {int[]}           encrypted data
     """
     expanded_key = key_expansion(key)
-    block_count = int(ceil(float(len(data)) / BLOCK_SIZE_BYTES))
+    block_count = ceil(len(data) / BLOCK_SIZE_BYTES)
 
     encrypted_data = []
     previous_cipher_block = iv