ai_v/venv/Lib/site-packages/cryptography/hazmat/primitives/padding.py
公司git 67f2621a69 feat(payment): 集成支付宝支付与订单管理功能
- 在应用中注册支付蓝图(payment_bp)以支持支付接口
- 配置支付宝相关秘钥、回调地址及环境选项
- 新增订单模型(Order),支持订单数据存储与管理
- 管理后台接口添加订单列表查询功能,支持超级管理员访问
- 购买页面与表单修改,支持不同套餐的购买提交
- 支付成功页面提示,显示订单编号及积分到账信息
- 移除买积分按钮禁用逻辑,开放购买功能
2026-01-14 17:00:43 +08:00

70 lines
1.8 KiB
Python

# This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.
from __future__ import annotations
import abc
from cryptography import utils
from cryptography.hazmat.bindings._rust import (
ANSIX923PaddingContext,
ANSIX923UnpaddingContext,
PKCS7PaddingContext,
PKCS7UnpaddingContext,
)
class PaddingContext(metaclass=abc.ABCMeta):
@abc.abstractmethod
def update(self, data: utils.Buffer) -> bytes:
"""
Pads the provided bytes and returns any available data as bytes.
"""
@abc.abstractmethod
def finalize(self) -> bytes:
"""
Finalize the padding, returns bytes.
"""
def _byte_padding_check(block_size: int) -> None:
if not (0 <= block_size <= 2040):
raise ValueError("block_size must be in range(0, 2041).")
if block_size % 8 != 0:
raise ValueError("block_size must be a multiple of 8.")
class PKCS7:
def __init__(self, block_size: int):
_byte_padding_check(block_size)
self.block_size = block_size
def padder(self) -> PaddingContext:
return PKCS7PaddingContext(self.block_size)
def unpadder(self) -> PaddingContext:
return PKCS7UnpaddingContext(self.block_size)
PaddingContext.register(PKCS7PaddingContext)
PaddingContext.register(PKCS7UnpaddingContext)
class ANSIX923:
def __init__(self, block_size: int):
_byte_padding_check(block_size)
self.block_size = block_size
def padder(self) -> PaddingContext:
return ANSIX923PaddingContext(self.block_size)
def unpadder(self) -> PaddingContext:
return ANSIX923UnpaddingContext(self.block_size)
PaddingContext.register(ANSIX923PaddingContext)
PaddingContext.register(ANSIX923UnpaddingContext)