453 lines
18 KiB
Python
453 lines
18 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
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# See LICENSE for details.
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#
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# Software slightly changed by Jonathan Warren <bitmessage at-symbol jonwarren.org>
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import sys
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import ctypes
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OpenSSL = None
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class CipherName:
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def __init__(self, name, pointer, blocksize):
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self._name = name
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self._pointer = pointer
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self._blocksize = blocksize
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def __str__(self):
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return "Cipher : " + self._name + " | Blocksize : " + str(self._blocksize) + " | Fonction pointer : " + str(self._pointer)
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def get_pointer(self):
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return self._pointer()
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def get_name(self):
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return self._name
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def get_blocksize(self):
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return self._blocksize
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class _OpenSSL:
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"""
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Wrapper for OpenSSL using ctypes
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"""
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def __init__(self, library):
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"""
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Build the wrapper
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"""
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self._lib = ctypes.CDLL(library)
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self.pointer = ctypes.pointer
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self.c_int = ctypes.c_int
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self.byref = ctypes.byref
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self.create_string_buffer = ctypes.create_string_buffer
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self.BN_new = self._lib.BN_new
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self.BN_new.restype = ctypes.c_void_p
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self.BN_new.argtypes = []
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self.BN_free = self._lib.BN_free
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self.BN_free.restype = None
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self.BN_free.argtypes = [ctypes.c_void_p]
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self.BN_num_bits = self._lib.BN_num_bits
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self.BN_num_bits.restype = ctypes.c_int
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self.BN_num_bits.argtypes = [ctypes.c_void_p]
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self.BN_bn2bin = self._lib.BN_bn2bin
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self.BN_bn2bin.restype = ctypes.c_int
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self.BN_bn2bin.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
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self.BN_bin2bn = self._lib.BN_bin2bn
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self.BN_bin2bn.restype = ctypes.c_void_p
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self.BN_bin2bn.argtypes = [ctypes.c_void_p, ctypes.c_int,
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ctypes.c_void_p]
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self.EC_KEY_free = self._lib.EC_KEY_free
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self.EC_KEY_free.restype = None
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self.EC_KEY_free.argtypes = [ctypes.c_void_p]
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self.EC_KEY_new_by_curve_name = self._lib.EC_KEY_new_by_curve_name
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self.EC_KEY_new_by_curve_name.restype = ctypes.c_void_p
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self.EC_KEY_new_by_curve_name.argtypes = [ctypes.c_int]
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self.EC_KEY_generate_key = self._lib.EC_KEY_generate_key
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self.EC_KEY_generate_key.restype = ctypes.c_int
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self.EC_KEY_generate_key.argtypes = [ctypes.c_void_p]
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self.EC_KEY_check_key = self._lib.EC_KEY_check_key
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self.EC_KEY_check_key.restype = ctypes.c_int
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self.EC_KEY_check_key.argtypes = [ctypes.c_void_p]
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self.EC_KEY_get0_private_key = self._lib.EC_KEY_get0_private_key
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self.EC_KEY_get0_private_key.restype = ctypes.c_void_p
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self.EC_KEY_get0_private_key.argtypes = [ctypes.c_void_p]
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self.EC_KEY_get0_public_key = self._lib.EC_KEY_get0_public_key
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self.EC_KEY_get0_public_key.restype = ctypes.c_void_p
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self.EC_KEY_get0_public_key.argtypes = [ctypes.c_void_p]
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self.EC_KEY_get0_group = self._lib.EC_KEY_get0_group
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self.EC_KEY_get0_group.restype = ctypes.c_void_p
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self.EC_KEY_get0_group.argtypes = [ctypes.c_void_p]
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self.EC_POINT_get_affine_coordinates_GFp = self._lib.EC_POINT_get_affine_coordinates_GFp
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self.EC_POINT_get_affine_coordinates_GFp.restype = ctypes.c_int
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self.EC_POINT_get_affine_coordinates_GFp.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
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self.EC_KEY_set_private_key = self._lib.EC_KEY_set_private_key
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self.EC_KEY_set_private_key.restype = ctypes.c_int
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self.EC_KEY_set_private_key.argtypes = [ctypes.c_void_p,
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ctypes.c_void_p]
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self.EC_KEY_set_public_key = self._lib.EC_KEY_set_public_key
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self.EC_KEY_set_public_key.restype = ctypes.c_int
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self.EC_KEY_set_public_key.argtypes = [ctypes.c_void_p,
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ctypes.c_void_p]
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self.EC_KEY_set_group = self._lib.EC_KEY_set_group
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self.EC_KEY_set_group.restype = ctypes.c_int
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self.EC_KEY_set_group.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
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self.EC_POINT_set_affine_coordinates_GFp = self._lib.EC_POINT_set_affine_coordinates_GFp
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self.EC_POINT_set_affine_coordinates_GFp.restype = ctypes.c_int
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self.EC_POINT_set_affine_coordinates_GFp.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
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self.EC_POINT_new = self._lib.EC_POINT_new
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self.EC_POINT_new.restype = ctypes.c_void_p
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self.EC_POINT_new.argtypes = [ctypes.c_void_p]
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self.EC_POINT_free = self._lib.EC_POINT_free
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self.EC_POINT_free.restype = None
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self.EC_POINT_free.argtypes = [ctypes.c_void_p]
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self.BN_CTX_free = self._lib.BN_CTX_free
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self.BN_CTX_free.restype = None
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self.BN_CTX_free.argtypes = [ctypes.c_void_p]
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self.EC_POINT_mul = self._lib.EC_POINT_mul
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self.EC_POINT_mul.restype = None
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self.EC_POINT_mul.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
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self.EC_KEY_set_private_key = self._lib.EC_KEY_set_private_key
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self.EC_KEY_set_private_key.restype = ctypes.c_int
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self.EC_KEY_set_private_key.argtypes = [ctypes.c_void_p,
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ctypes.c_void_p]
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self.ECDH_OpenSSL = self._lib.ECDH_OpenSSL
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self._lib.ECDH_OpenSSL.restype = ctypes.c_void_p
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self._lib.ECDH_OpenSSL.argtypes = []
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self.BN_CTX_new = self._lib.BN_CTX_new
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self._lib.BN_CTX_new.restype = ctypes.c_void_p
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self._lib.BN_CTX_new.argtypes = []
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self.ECDH_set_method = self._lib.ECDH_set_method
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self._lib.ECDH_set_method.restype = ctypes.c_int
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self._lib.ECDH_set_method.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
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self.ECDH_compute_key = self._lib.ECDH_compute_key
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self.ECDH_compute_key.restype = ctypes.c_int
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self.ECDH_compute_key.argtypes = [ctypes.c_void_p,
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ctypes.c_int, ctypes.c_void_p, ctypes.c_void_p]
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self.EVP_CipherInit_ex = self._lib.EVP_CipherInit_ex
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self.EVP_CipherInit_ex.restype = ctypes.c_int
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self.EVP_CipherInit_ex.argtypes = [ctypes.c_void_p,
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ctypes.c_void_p, ctypes.c_void_p]
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self.EVP_CIPHER_CTX_new = self._lib.EVP_CIPHER_CTX_new
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self.EVP_CIPHER_CTX_new.restype = ctypes.c_void_p
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self.EVP_CIPHER_CTX_new.argtypes = []
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# Cipher
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self.EVP_aes_128_cfb128 = self._lib.EVP_aes_128_cfb128
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self.EVP_aes_128_cfb128.restype = ctypes.c_void_p
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self.EVP_aes_128_cfb128.argtypes = []
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self.EVP_aes_256_cfb128 = self._lib.EVP_aes_256_cfb128
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self.EVP_aes_256_cfb128.restype = ctypes.c_void_p
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self.EVP_aes_256_cfb128.argtypes = []
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self.EVP_aes_128_cbc = self._lib.EVP_aes_128_cbc
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self.EVP_aes_128_cbc.restype = ctypes.c_void_p
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self.EVP_aes_128_cbc.argtypes = []
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self.EVP_aes_256_cbc = self._lib.EVP_aes_256_cbc
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self.EVP_aes_256_cbc.restype = ctypes.c_void_p
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self.EVP_aes_256_cbc.argtypes = []
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#self.EVP_aes_128_ctr = self._lib.EVP_aes_128_ctr
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#self.EVP_aes_128_ctr.restype = ctypes.c_void_p
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#self.EVP_aes_128_ctr.argtypes = []
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#self.EVP_aes_256_ctr = self._lib.EVP_aes_256_ctr
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#self.EVP_aes_256_ctr.restype = ctypes.c_void_p
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#self.EVP_aes_256_ctr.argtypes = []
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self.EVP_aes_128_ofb = self._lib.EVP_aes_128_ofb
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self.EVP_aes_128_ofb.restype = ctypes.c_void_p
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self.EVP_aes_128_ofb.argtypes = []
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self.EVP_aes_256_ofb = self._lib.EVP_aes_256_ofb
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self.EVP_aes_256_ofb.restype = ctypes.c_void_p
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self.EVP_aes_256_ofb.argtypes = []
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self.EVP_bf_cbc = self._lib.EVP_bf_cbc
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self.EVP_bf_cbc.restype = ctypes.c_void_p
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self.EVP_bf_cbc.argtypes = []
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self.EVP_bf_cfb64 = self._lib.EVP_bf_cfb64
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self.EVP_bf_cfb64.restype = ctypes.c_void_p
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self.EVP_bf_cfb64.argtypes = []
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self.EVP_rc4 = self._lib.EVP_rc4
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self.EVP_rc4.restype = ctypes.c_void_p
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self.EVP_rc4.argtypes = []
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self.EVP_CIPHER_CTX_cleanup = self._lib.EVP_CIPHER_CTX_cleanup
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self.EVP_CIPHER_CTX_cleanup.restype = ctypes.c_int
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self.EVP_CIPHER_CTX_cleanup.argtypes = [ctypes.c_void_p]
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self.EVP_CIPHER_CTX_free = self._lib.EVP_CIPHER_CTX_free
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self.EVP_CIPHER_CTX_free.restype = None
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self.EVP_CIPHER_CTX_free.argtypes = [ctypes.c_void_p]
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self.EVP_CipherUpdate = self._lib.EVP_CipherUpdate
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self.EVP_CipherUpdate.restype = ctypes.c_int
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self.EVP_CipherUpdate.argtypes = [ctypes.c_void_p,
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ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_int]
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self.EVP_CipherFinal_ex = self._lib.EVP_CipherFinal_ex
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self.EVP_CipherFinal_ex.restype = ctypes.c_int
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self.EVP_CipherFinal_ex.argtypes = [ctypes.c_void_p,
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ctypes.c_void_p, ctypes.c_void_p]
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self.EVP_DigestInit = self._lib.EVP_DigestInit
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self.EVP_DigestInit.restype = ctypes.c_int
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self._lib.EVP_DigestInit.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
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self.EVP_DigestUpdate = self._lib.EVP_DigestUpdate
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self.EVP_DigestUpdate.restype = ctypes.c_int
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self.EVP_DigestUpdate.argtypes = [ctypes.c_void_p,
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ctypes.c_void_p, ctypes.c_int]
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self.EVP_DigestFinal = self._lib.EVP_DigestFinal
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self.EVP_DigestFinal.restype = ctypes.c_int
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self.EVP_DigestFinal.argtypes = [ctypes.c_void_p,
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ctypes.c_void_p, ctypes.c_void_p]
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self.EVP_ecdsa = self._lib.EVP_ecdsa
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self._lib.EVP_ecdsa.restype = ctypes.c_void_p
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self._lib.EVP_ecdsa.argtypes = []
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self.ECDSA_sign = self._lib.ECDSA_sign
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self.ECDSA_sign.restype = ctypes.c_int
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self.ECDSA_sign.argtypes = [ctypes.c_int, ctypes.c_void_p,
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ctypes.c_int, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
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self.ECDSA_verify = self._lib.ECDSA_verify
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self.ECDSA_verify.restype = ctypes.c_int
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self.ECDSA_verify.argtypes = [ctypes.c_int, ctypes.c_void_p,
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ctypes.c_int, ctypes.c_void_p, ctypes.c_int, ctypes.c_void_p]
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self.EVP_MD_CTX_create = self._lib.EVP_MD_CTX_create
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self.EVP_MD_CTX_create.restype = ctypes.c_void_p
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self.EVP_MD_CTX_create.argtypes = []
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self.EVP_MD_CTX_init = self._lib.EVP_MD_CTX_init
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self.EVP_MD_CTX_init.restype = None
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self.EVP_MD_CTX_init.argtypes = [ctypes.c_void_p]
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self.EVP_MD_CTX_destroy = self._lib.EVP_MD_CTX_destroy
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self.EVP_MD_CTX_destroy.restype = None
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self.EVP_MD_CTX_destroy.argtypes = [ctypes.c_void_p]
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self.RAND_bytes = self._lib.RAND_bytes
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self.RAND_bytes.restype = ctypes.c_int
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self.RAND_bytes.argtypes = [ctypes.c_void_p, ctypes.c_int]
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self.EVP_sha256 = self._lib.EVP_sha256
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self.EVP_sha256.restype = ctypes.c_void_p
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self.EVP_sha256.argtypes = []
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self.i2o_ECPublicKey = self._lib.i2o_ECPublicKey
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self.i2o_ECPublicKey.restype = ctypes.c_void_p
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self.i2o_ECPublicKey.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
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self.EVP_sha512 = self._lib.EVP_sha512
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self.EVP_sha512.restype = ctypes.c_void_p
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self.EVP_sha512.argtypes = []
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self.HMAC = self._lib.HMAC
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self.HMAC.restype = ctypes.c_void_p
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self.HMAC.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_int,
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ctypes.c_void_p, ctypes.c_int, ctypes.c_void_p, ctypes.c_void_p]
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try:
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self.PKCS5_PBKDF2_HMAC = self._lib.PKCS5_PBKDF2_HMAC
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except:
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# The above is not compatible with all versions of OSX.
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self.PKCS5_PBKDF2_HMAC = self._lib.PKCS5_PBKDF2_HMAC_SHA1
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self.PKCS5_PBKDF2_HMAC.restype = ctypes.c_int
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self.PKCS5_PBKDF2_HMAC.argtypes = [ctypes.c_void_p, ctypes.c_int,
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ctypes.c_void_p, ctypes.c_int,
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ctypes.c_int, ctypes.c_void_p,
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ctypes.c_int, ctypes.c_void_p]
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self._set_ciphers()
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self._set_curves()
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def _set_ciphers(self):
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self.cipher_algo = {
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'aes-128-cbc': CipherName('aes-128-cbc', self.EVP_aes_128_cbc, 16),
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'aes-256-cbc': CipherName('aes-256-cbc', self.EVP_aes_256_cbc, 16),
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'aes-128-cfb': CipherName('aes-128-cfb', self.EVP_aes_128_cfb128, 16),
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'aes-256-cfb': CipherName('aes-256-cfb', self.EVP_aes_256_cfb128, 16),
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'aes-128-ofb': CipherName('aes-128-ofb', self._lib.EVP_aes_128_ofb, 16),
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'aes-256-ofb': CipherName('aes-256-ofb', self._lib.EVP_aes_256_ofb, 16),
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#'aes-128-ctr': CipherName('aes-128-ctr', self._lib.EVP_aes_128_ctr, 16),
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#'aes-256-ctr': CipherName('aes-256-ctr', self._lib.EVP_aes_256_ctr, 16),
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'bf-cfb': CipherName('bf-cfb', self.EVP_bf_cfb64, 8),
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'bf-cbc': CipherName('bf-cbc', self.EVP_bf_cbc, 8),
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'rc4': CipherName('rc4', self.EVP_rc4, 128), # 128 is the initialisation size not block size
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}
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def _set_curves(self):
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self.curves = {
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'secp112r1': 704,
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'secp112r2': 705,
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'secp128r1': 706,
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'secp128r2': 707,
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'secp160k1': 708,
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'secp160r1': 709,
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'secp160r2': 710,
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'secp192k1': 711,
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'secp224k1': 712,
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'secp224r1': 713,
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'secp256k1': 714,
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'secp384r1': 715,
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'secp521r1': 716,
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'sect113r1': 717,
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'sect113r2': 718,
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'sect131r1': 719,
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'sect131r2': 720,
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'sect163k1': 721,
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'sect163r1': 722,
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'sect163r2': 723,
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'sect193r1': 724,
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'sect193r2': 725,
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'sect233k1': 726,
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'sect233r1': 727,
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'sect239k1': 728,
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'sect283k1': 729,
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'sect283r1': 730,
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'sect409k1': 731,
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'sect409r1': 732,
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'sect571k1': 733,
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'sect571r1': 734,
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}
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def BN_num_bytes(self, x):
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"""
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returns the length of a BN (OpenSSl API)
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"""
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return int((self.BN_num_bits(x) + 7) / 8)
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def get_cipher(self, name):
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"""
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returns the OpenSSL cipher instance
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"""
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if name not in self.cipher_algo:
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raise Exception("Unknown cipher")
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return self.cipher_algo[name]
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def get_curve(self, name):
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"""
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returns the id of a elliptic curve
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"""
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if name not in self.curves:
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raise Exception("Unknown curve")
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return self.curves[name]
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def get_curve_by_id(self, id):
|
|
"""
|
|
returns the name of a elliptic curve with his id
|
|
"""
|
|
res = None
|
|
for i in self.curves:
|
|
if self.curves[i] == id:
|
|
res = i
|
|
break
|
|
if res is None:
|
|
raise Exception("Unknown curve")
|
|
return res
|
|
|
|
def rand(self, size):
|
|
"""
|
|
OpenSSL random function
|
|
"""
|
|
buffer = self.malloc(0, size)
|
|
# This pyelliptic library, by default, didn't check the return value of RAND_bytes. It is
|
|
# evidently possible that it returned an error and not-actually-random data. However, in
|
|
# tests on various operating systems, while generating hundreds of gigabytes of random
|
|
# strings of various sizes I could not get an error to occur. Also Bitcoin doesn't check
|
|
# the return value of RAND_bytes either.
|
|
# Fixed in Bitmessage version 0.4.2 (in source code on 2013-10-13)
|
|
while self.RAND_bytes(buffer, size) != 1:
|
|
import time
|
|
time.sleep(1)
|
|
return buffer.raw
|
|
|
|
def malloc(self, data, size):
|
|
"""
|
|
returns a create_string_buffer (ctypes)
|
|
"""
|
|
buffer = None
|
|
if data != 0:
|
|
if sys.version_info.major == 3 and isinstance(data, type('')):
|
|
data = data.encode()
|
|
buffer = self.create_string_buffer(data, size)
|
|
else:
|
|
buffer = self.create_string_buffer(size)
|
|
return buffer
|
|
|
|
try:
|
|
OpenSSL = _OpenSSL('libcrypto.so')
|
|
except:
|
|
try:
|
|
OpenSSL = _OpenSSL('libeay32.dll')
|
|
except:
|
|
try:
|
|
OpenSSL = _OpenSSL('libcrypto.dylib')
|
|
except:
|
|
try:
|
|
# try homebrew installation
|
|
OpenSSL = _OpenSSL('/usr/local/opt/openssl/lib/libcrypto.dylib')
|
|
except:
|
|
try:
|
|
# Load it from an Bitmessage.app on OSX
|
|
OpenSSL = _OpenSSL('./../Frameworks/libcrypto.dylib')
|
|
except:
|
|
try:
|
|
from os import path
|
|
lib_path = path.join(sys._MEIPASS, "libeay32.dll")
|
|
OpenSSL = _OpenSSL(lib_path)
|
|
except:
|
|
if 'linux' in sys.platform or 'darwin' in sys.platform or 'freebsd' in sys.platform:
|
|
try:
|
|
from ctypes.util import find_library
|
|
OpenSSL = _OpenSSL(find_library('ssl'))
|
|
except Exception, err:
|
|
sys.stderr.write('(On Linux) Couldn\'t find and load the OpenSSL library. You must install it. If you believe that you already have it installed, this exception information might be of use:\n')
|
|
from ctypes.util import find_library
|
|
OpenSSL = _OpenSSL(find_library('ssl'))
|
|
else:
|
|
raise Exception("Couldn't find and load the OpenSSL library. You must install it.")
|