faset over fra Z3950 til google books

This commit is contained in:
2010-09-23 13:57:37 +00:00
parent d173b9396e
commit 644e79f9b5
221 changed files with 60948 additions and 27273 deletions

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"""Cryptlib 3DES implementation."""
from cryptomath import *
from TripleDES import *
if cryptlibpyLoaded:
def new(key, mode, IV):
return Cryptlib_TripleDES(key, mode, IV)
class Cryptlib_TripleDES(TripleDES):
def __init__(self, key, mode, IV):
TripleDES.__init__(self, key, mode, IV, "cryptlib")
self.context = cryptlib_py.cryptCreateContext(cryptlib_py.CRYPT_UNUSED, cryptlib_py.CRYPT_ALGO_3DES)
cryptlib_py.cryptSetAttribute(self.context, cryptlib_py.CRYPT_CTXINFO_MODE, cryptlib_py.CRYPT_MODE_CBC)
cryptlib_py.cryptSetAttribute(self.context, cryptlib_py.CRYPT_CTXINFO_KEYSIZE, len(key))
cryptlib_py.cryptSetAttributeString(self.context, cryptlib_py.CRYPT_CTXINFO_KEY, key)
cryptlib_py.cryptSetAttributeString(self.context, cryptlib_py.CRYPT_CTXINFO_IV, IV)
def __del__(self):
cryptlib_py.cryptDestroyContext(self.context)
def encrypt(self, plaintext):
TripleDES.encrypt(self, plaintext)
bytes = stringToBytes(plaintext)
cryptlib_py.cryptEncrypt(self.context, bytes)
return bytesToString(bytes)
def decrypt(self, ciphertext):
TripleDES.decrypt(self, ciphertext)
bytes = stringToBytes(ciphertext)
cryptlib_py.cryptDecrypt(self.context, bytes)
return bytesToString(bytes)