软件简介

Cryptography 是一个开发包，为 Python 开发者们提供了加密基元（cryptographic
primitives）和秘诀（recipes）。它支持 Python 2.6-2.7、Python 3.3+ 和 PyPy。Cryptography
含有两个高层秘诀和低层接口来加密算法，比如说：对称密码算法、消息摘要和密钥派生成函数。
在使用 Cryptography 之前你必须解决以下问题：

• Lack of PyPy and Python 3 support.

• Lack of maintenance.

• Use of poor implementations of algorithms (i.e. ones with known side-channel attacks).

• Lack of high level, “Cryptography for humans”, APIs.

• Absence of algorithms such asAES-GCM andHKDF.

• Poor introspectability, and thus poor testability.

• Extremely error prone APIs, and bad defaults.