MoinQ: メモ/python/cryptography

python/cryptographyについて、ここに記述してください。

https://cryptography.io/en/latest/

https://cryptography.io/en/latest/hazmat/bindings/

1. hazmat

Danger

This is a “Hazardous Materials” module. 
You should ONLY use it if you’re 100% absolutely sure that you know what you’re doing
because this module is full of land mines, dragons, and dinosaurs with laser guns.

2. _openssl.so

ちょっと違うな。　-- ToshinoriMaeno 2015-11-21 05:08:52

/usr/local/lib/python2.7/site-packages/cryptography-1.1-py2.7-linux-i686.egg/cryptography/hazmat/bindings にて

$ readelf -s _openssl.so | grep EC_curve
   195: 00000000     0 NOTYPE  GLOBAL DEFAULT  UND EC_curve_nid2nist
  2416: 0006a030    32 FUNC    LOCAL  DEFAULT   11 _cffi_d_EC_curve_nid2nist
  2417: 0006a050   122 FUNC    LOCAL  DEFAULT   11 _cffi_f_EC_curve_nid2nist
  3302: 00000000     0 NOTYPE  GLOBAL DEFAULT  UND EC_curve_nid2nist

tmaeno@tmaeno:~/anaconda2/lib/python2.7/site-packages/cryptography-1.0.2-py2.7-linux-i686.egg/cryptography/hazmat/bindings$

readelf -s _openssl.so | grep EC_curve
   201: 00000000   200 FUNC    GLOBAL DEFAULT  UND EC_curve_nid2nist
  1990: 0003a660    35 FUNC    LOCAL  DEFAULT   10 _cffi_d_EC_curve_nid2nist
  1991: 0003a690   135 FUNC    LOCAL  DEFAULT   10 _cffi_f_EC_curve_nid2nist
  3283: 00000000   200 FUNC    GLOBAL DEFAULT  UND EC_curve_nid2nist

cryptography-1.0.2を入れなおしてみたら、 以下のように、OpenSSLをimportできるようになった。

$ python
Python 2.7.10 (default, Nov 21 2015, 11:29:15) 
[GCC 4.8.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import OpenSSL
>>>