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Side by Side Diff: third_party/tlslite/tlslite/utils/cipherfactory.py

Issue 211173006: Perform tlslite 0.3.8 -> 0.4.6 renames ahead of time. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Drop the -B Created 6 years, 8 months ago
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1 """Factory functions for symmetric cryptography.""" 1 """Factory functions for symmetric cryptography."""
2 2
3 import os 3 import os
4 4
5 import Python_AES 5 import python_aes
6 import Python_RC4 6 import python_rc4
7 7
8 import cryptomath 8 import cryptomath
9 9
10 tripleDESPresent = False 10 tripleDESPresent = False
11 11
12 if cryptomath.m2cryptoLoaded: 12 if cryptomath.m2cryptoLoaded:
13 import OpenSSL_AES 13 import openssl_aes
14 import OpenSSL_RC4 14 import openssl_rc4
15 import OpenSSL_TripleDES 15 import openssl_tripledes
16 tripleDESPresent = True 16 tripleDESPresent = True
17 17
18 if cryptomath.cryptlibpyLoaded: 18 if cryptomath.cryptlibpyLoaded:
19 import Cryptlib_AES 19 import cryptlib_aes
20 import Cryptlib_RC4 20 import cryptlib_rc4
21 import Cryptlib_TripleDES 21 import cryptlib_tripledes
22 tripleDESPresent = True 22 tripleDESPresent = True
23 23
24 if cryptomath.pycryptoLoaded: 24 if cryptomath.pycryptoLoaded:
25 import PyCrypto_AES 25 import pycrypto_aes
26 import PyCrypto_RC4 26 import pycrypto_rc4
27 import PyCrypto_TripleDES 27 import pycrypto_tripledes
28 tripleDESPresent = True 28 tripleDESPresent = True
29 29
30 # ************************************************************************** 30 # **************************************************************************
31 # Factory Functions for AES 31 # Factory Functions for AES
32 # ************************************************************************** 32 # **************************************************************************
33 33
34 def createAES(key, IV, implList=None): 34 def createAES(key, IV, implList=None):
35 """Create a new AES object. 35 """Create a new AES object.
36 36
37 @type key: str 37 @type key: str
38 @param key: A 16, 24, or 32 byte string. 38 @param key: A 16, 24, or 32 byte string.
39 39
40 @type IV: str 40 @type IV: str
41 @param IV: A 16 byte string 41 @param IV: A 16 byte string
42 42
43 @rtype: L{tlslite.utils.AES} 43 @rtype: L{tlslite.utils.AES}
44 @return: An AES object. 44 @return: An AES object.
45 """ 45 """
46 if implList == None: 46 if implList == None:
47 implList = ["cryptlib", "openssl", "pycrypto", "python"] 47 implList = ["cryptlib", "openssl", "pycrypto", "python"]
48 48
49 for impl in implList: 49 for impl in implList:
50 if impl == "cryptlib" and cryptomath.cryptlibpyLoaded: 50 if impl == "cryptlib" and cryptomath.cryptlibpyLoaded:
51 return Cryptlib_AES.new(key, 2, IV) 51 return cryptlib_aes.new(key, 2, IV)
52 elif impl == "openssl" and cryptomath.m2cryptoLoaded: 52 elif impl == "openssl" and cryptomath.m2cryptoLoaded:
53 return OpenSSL_AES.new(key, 2, IV) 53 return openssl_aes.new(key, 2, IV)
54 elif impl == "pycrypto" and cryptomath.pycryptoLoaded: 54 elif impl == "pycrypto" and cryptomath.pycryptoLoaded:
55 return PyCrypto_AES.new(key, 2, IV) 55 return pycrypto_aes.new(key, 2, IV)
56 elif impl == "python": 56 elif impl == "python":
57 return Python_AES.new(key, 2, IV) 57 return python_aes.new(key, 2, IV)
58 raise NotImplementedError() 58 raise NotImplementedError()
59 59
60 def createRC4(key, IV, implList=None): 60 def createRC4(key, IV, implList=None):
61 """Create a new RC4 object. 61 """Create a new RC4 object.
62 62
63 @type key: str 63 @type key: str
64 @param key: A 16 to 32 byte string. 64 @param key: A 16 to 32 byte string.
65 65
66 @type IV: object 66 @type IV: object
67 @param IV: Ignored, whatever it is. 67 @param IV: Ignored, whatever it is.
68 68
69 @rtype: L{tlslite.utils.RC4} 69 @rtype: L{tlslite.utils.RC4}
70 @return: An RC4 object. 70 @return: An RC4 object.
71 """ 71 """
72 if implList == None: 72 if implList == None:
73 implList = ["cryptlib", "openssl", "pycrypto", "python"] 73 implList = ["cryptlib", "openssl", "pycrypto", "python"]
74 74
75 if len(IV) != 0: 75 if len(IV) != 0:
76 raise AssertionError() 76 raise AssertionError()
77 for impl in implList: 77 for impl in implList:
78 if impl == "cryptlib" and cryptomath.cryptlibpyLoaded: 78 if impl == "cryptlib" and cryptomath.cryptlibpyLoaded:
79 return Cryptlib_RC4.new(key) 79 return cryptlib_rc4.new(key)
80 elif impl == "openssl" and cryptomath.m2cryptoLoaded: 80 elif impl == "openssl" and cryptomath.m2cryptoLoaded:
81 return OpenSSL_RC4.new(key) 81 return openssl_rc4.new(key)
82 elif impl == "pycrypto" and cryptomath.pycryptoLoaded: 82 elif impl == "pycrypto" and cryptomath.pycryptoLoaded:
83 return PyCrypto_RC4.new(key) 83 return pycrypto_rc4.new(key)
84 elif impl == "python": 84 elif impl == "python":
85 return Python_RC4.new(key) 85 return python_rc4.new(key)
86 raise NotImplementedError() 86 raise NotImplementedError()
87 87
88 #Create a new TripleDES instance 88 #Create a new TripleDES instance
89 def createTripleDES(key, IV, implList=None): 89 def createTripleDES(key, IV, implList=None):
90 """Create a new 3DES object. 90 """Create a new 3DES object.
91 91
92 @type key: str 92 @type key: str
93 @param key: A 24 byte string. 93 @param key: A 24 byte string.
94 94
95 @type IV: str 95 @type IV: str
96 @param IV: An 8 byte string 96 @param IV: An 8 byte string
97 97
98 @rtype: L{tlslite.utils.TripleDES} 98 @rtype: L{tlslite.utils.TripleDES}
99 @return: A 3DES object. 99 @return: A 3DES object.
100 """ 100 """
101 if implList == None: 101 if implList == None:
102 implList = ["cryptlib", "openssl", "pycrypto"] 102 implList = ["cryptlib", "openssl", "pycrypto"]
103 103
104 for impl in implList: 104 for impl in implList:
105 if impl == "cryptlib" and cryptomath.cryptlibpyLoaded: 105 if impl == "cryptlib" and cryptomath.cryptlibpyLoaded:
106 return Cryptlib_TripleDES.new(key, 2, IV) 106 return cryptlib_tripledes.new(key, 2, IV)
107 elif impl == "openssl" and cryptomath.m2cryptoLoaded: 107 elif impl == "openssl" and cryptomath.m2cryptoLoaded:
108 return OpenSSL_TripleDES.new(key, 2, IV) 108 return openssl_tripledes.new(key, 2, IV)
109 elif impl == "pycrypto" and cryptomath.pycryptoLoaded: 109 elif impl == "pycrypto" and cryptomath.pycryptoLoaded:
110 return PyCrypto_TripleDES.new(key, 2, IV) 110 return pycrypto_tripledes.new(key, 2, IV)
111 raise NotImplementedError() 111 raise NotImplementedError()
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