diff options
| -rw-r--r-- | src/cryptography/utils.py | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/src/cryptography/utils.py b/src/cryptography/utils.py index ab3c84e1..6d304856 100644 --- a/src/cryptography/utils.py +++ b/src/cryptography/utils.py @@ -51,13 +51,19 @@ else: return int(bytes(data).encode('hex'), 16) -def int_to_bytes(integer, length=None): - hex_string = '%x' % integer - if length is None: - n = len(hex_string) - else: - n = length * 2 - return binascii.unhexlify(hex_string.zfill(n + (n & 1))) +if hasattr(int, "to_bytes"): + def int_to_bytes(integer, length=None): + return integer.to_bytes( + length or (integer.bit_length() + 7) // 8 or 1, 'big' + ) +else: + def int_to_bytes(integer, length=None): + hex_string = '%x' % integer + if length is None: + n = len(hex_string) + else: + n = length * 2 + return binascii.unhexlify(hex_string.zfill(n + (n & 1))) class InterfaceNotImplemented(Exception): |