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//proc/self/root/usr/share/doc/m2crypto-0.16/tests/test_bio.py

#!/usr/bin/python

"""
Unit tests for M2Crypto.BIO.

import unittest
from M2Crypto import BIO, Rand

class CipherStreamTestCase(unittest.TestCase):
    def try_algo(self, algo):
        enc = 1
        dec = 0
        data = '123456789012345678901234'
        # Encrypt.
        mem = BIO.MemoryBuffer()
        cf = BIO.CipherStream(mem)
        cf.set_cipher(algo, 'key', 'iv', 1)
        cf.write(data)
        cf.flush()
        cf.write_close()
        cf.close()
        xxx = mem.read()
    
        # Decrypt.
        mem = BIO.MemoryBuffer(xxx)
        cf = BIO.CipherStream(mem)
        cf.set_cipher(algo, 'key', 'iv', 0)
        cf.write_close()
        data2 = cf.read()
        cf.close()
    
        assert data == data2, '%s algorithm cipher test failed' % algo
        
    def check_ciphers(self):
        ciphers=['bf_ecb', 'bf_cbc', 'bf_cfb', 'bf_ofb',\
            #'idea_ecb', 'idea_cbc', 'idea_cfb', 'idea_ofb',\
            'cast5_ecb', 'cast5_cbc', 'cast5_cfb', 'cast5_ofb',\
            #'rc5_ecb', 'rc5_cbc', 'rc5_cfb', 'rc5_ofb',\
            'des_ecb', 'des_cbc', 'des_cfb', 'des_ofb',\
            'des_ede_ecb', 'des_ede_cbc', 'des_ede_cfb', 'des_ede_ofb',\
            'des_ede3_ecb', 'des_ede3_cbc', 'des_ede3_cfb', 'des_ede3_ofb',\
            'aes_128_ecb', 'aes_128_cbc', 'aes_128_cfb', 'aes_128_ofb',\
            'aes_192_ecb', 'aes_192_cbc', 'aes_192_cfb', 'aes_192_ofb',\
            'aes_256_ecb', 'aes_256_cbc', 'aes_256_cfb', 'aes_256_ofb',\
            'rc4', 'rc2_40_cbc']
        for i in ciphers:
            self.try_algo(i)

self.assertRaises(ValueError, self.try_algo, 'nosuchalgo4567')

def suite():
    suite = unittest.TestSuite()
    suite.addTest(unittest.makeSuite(CipherStreamTestCase, 'check'))
    return suite

if __name__ == '__main__':
    Rand.load_file('randpool.dat', -1) 
    unittest.TextTestRunner().run(suite())
    Rand.save_file('randpool.dat')