python 2.6-3.4的快速pbkdf2
backports.pbkdf2的Python项目详细描述
这是python 2.6到2.7的hashlib.pbkdf2_hmac的后台端口。这个 实现附带一个纯python实现和一个c模块 取决于openssl。c代码不将PKCS5_PBKDF2_HMAC包装为 它的实现是次优的。
用法
>>> from backports.pbkdf2 import pbkdf2_hmac, compare_digest
>>> dkey = pbkdf2_hmac('sha1', passwordbytes, saltbytes, iterations=100000)
>>> compare_digest(dkey, originalkey)
True
pbkdf2_hmac（散列名称、密码、salt、迭代次数、dklen=none）
- hash_name
- name of the digest algorithm as string
- password
- password as bytes, bytearray or bytes-like object (*)
- salt
- salt as bytes, bytearray or bytes-like object (*). The salt should be generated with a CPRNG like ^{tt3}$. You should never use ^{tt4}$. About 16 bytes seem to be a good choice.
- iterations
- number of rounds, 100,000 rounds of SHA-1 take about 30ms on a modern CPU.
- dklen
- length of the derived key (defaults to digest_size)
- returns
- derived key as bytes
(*) bytearray and bytes-like objects are not supported on Python 2.6
基准
| password length | 10 | 100 | 500 | 1000 |
|---|---|---|---|---|
| backports.pbkdf2 C | 0.314 | 0.321 | 0.310 | 0.310 |
| backports.pbkdf2 Py | 0.838 | 0.847 | 0.853 | 0.913 |
| pbkdf2_ctypes 0.99.3 | 0.554 | 0.663 | 0.954 | 1.344 |
| pbkdf2 1.3 | 5.235 | 5.746 | 6.155 | 6.450 |
| Django pbkdf2 1.5.4 | 1.976 | 2.430 | 2.676 | 3.078 |
| PyCrypto 2.6.1 | 6.903 | 9.062 | 9.518 | 10.274 |
- algorithm
- sha1
- rounds
- 50000
- dklen
- 20
- saltlen
- 16
- number of runs per test
- 10
- Python
- Python 3.3 on Linux AMD64
- CPU
- Intel i7-2860QM @ 2.50GHz
更改日志
pbkdf2 0.1
发布日期：2013年10月19日
- backports.pbkdf2的初始版本
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