fix secure tab

2026-09-13 08:15:09 +02:00
parent 1e10a7dddb
commit 69ad7a550f
2478 changed files with 602241 additions and 1 deletions
@@ -0,0 +1,39 @@
+import base64
+import binascii
+
+
+def b64urldecode(data):
+    """Decodes an unpadded Base64url-encoded string.
+
+    :param data: data bytes to decode
+    :type data: bytes
+
+    :returns bytes
+
+    """
+    return base64.urlsafe_b64decode(data + b"===="[len(data) % 4:])
+
+
+def b64urlencode(data):
+    """Encode a byte string into a Base64url-encoded string without padding
+
+    :param data: data bytes to encode
+    :type data: bytes
+
+    :returns str
+
+    """
+    return base64.urlsafe_b64encode(data).replace(b'=', b'').decode('utf8')
+
+
+def num_to_bytes(n, pad_to):
+    """Returns the byte representation of an integer, in big-endian order.
+    :param n: The integer to encode.
+    :type n: int
+    :param pad_to: Expected length of result, zeropad if necessary.
+    :type pad_to: int
+    :returns bytes
+    """
+    h = '%x' % n
+    r = binascii.unhexlify('0' * (len(h) % 2) + h)
+    return b'\x00' * (pad_to - len(r)) + r