Cryptographic Services

hashlib

哈希算法和摘要算法标准库，就是把任意长度的数据转换为一个长度固定的数据串．

MD5: Message Digest Algorithm 5.

SHA1: Secure Hash Algorithm.

import hashlib

classes:

# methods:
# 哈希对象有下列方法：
update(arg) # 更新字符串
md5.update('string or read from a file') # 放入需要转换的内容

digest() # 字符串
hexdigest() # 十六进制字符串
md5.hexdigest() # 获取md5十六进制字符串

copy() # 复制哈希对象

functions:

# 下类函数都返回哈希对象
new(name, string='')
md5()
md5 = hashlib.md5() # 创建一个md5的hash对象
sha1()
sha224()
sha256()
sha384()
sha512()

hmac

TPL

pycrypto

https://github.com/dlitz/pycrypto

windows需要MS Visual C++ compiler for python2.7.

$ pip install pycrypto

ecdsa

pure-python ECDSA signature/verification

https://github.com/warner/python-ecdsa

$ pip install ecdsa

pygpgme

https://pypi.python.org/pypi/pygpgme

A Python wrapper for the GPGME library.

Windows安装失败？

# 需要先安装gpgme的开发库
$ sudo apt-get install libgpgme11-dev
$ pip install pygpgme