diff --git a/plugins/CryptMessage/CryptMessage.py b/plugins/CryptMessage/CryptMessage.py index 00c5d7c6..6f2cbdc2 100644 --- a/plugins/CryptMessage/CryptMessage.py +++ b/plugins/CryptMessage/CryptMessage.py @@ -7,7 +7,7 @@ ecc_cache = {} def eciesEncrypt(data, pubkey, ephemcurve=None, ciphername='aes-256-cbc'): - import pyelliptic + from lib import pyelliptic pubkey_openssl = toOpensslPublickey(base64.b64decode(pubkey)) curve, pubkey_x, pubkey_y, i = pyelliptic.ECC._decode_pubkey(pubkey_openssl) if ephemcurve is None: @@ -34,7 +34,7 @@ def split(encrypted): def getEcc(privatekey=None): - import pyelliptic + from lib import pyelliptic global ecc_cache if privatekey not in ecc_cache: if privatekey: diff --git a/plugins/CryptMessage/CryptMessagePlugin.py b/plugins/CryptMessage/CryptMessagePlugin.py index 6cfb8fc5..64c8ac81 100644 --- a/plugins/CryptMessage/CryptMessagePlugin.py +++ b/plugins/CryptMessage/CryptMessagePlugin.py @@ -60,7 +60,7 @@ class UiWebsocketPlugin(object): # Encrypt a text using AES # Return: Iv, AES key, Encrypted text def actionAesEncrypt(self, to, text, key=None, iv=None): - import pyelliptic + from lib import pyelliptic if key: key = base64.b64decode(key) @@ -83,7 +83,7 @@ class UiWebsocketPlugin(object): # Decrypt a text using AES # Return: Decrypted text def actionAesDecrypt(self, to, *args): - import pyelliptic + from lib import pyelliptic if len(args) == 3: # Single decrypt encrypted_texts = [(args[0], args[1])] diff --git a/src/lib/pyelliptic/LICENSE b/src/lib/pyelliptic/LICENSE new file mode 100644 index 00000000..94a9ed02 --- /dev/null +++ b/src/lib/pyelliptic/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/src/lib/pyelliptic/README.md b/src/lib/pyelliptic/README.md new file mode 100644 index 00000000..3acf819c --- /dev/null +++ b/src/lib/pyelliptic/README.md @@ -0,0 +1,96 @@ +# PyElliptic + +PyElliptic is a high level wrapper for the cryptographic library : OpenSSL. +Under the GNU General Public License + +Python3 compatible. For GNU/Linux and Windows. +Require OpenSSL + +## Version + +The [upstream pyelliptic](https://github.com/yann2192/pyelliptic) has been +deprecated by the author at 1.5.8 and ECC API has been removed. + +This version is a fork of the pyelliptic extracted from the [BitMessage source +tree](https://github.com/Bitmessage/PyBitmessage), and does contain the ECC +API. To minimize confusion but to avoid renaming the module, major version has +been bumped. + +BitMessage is actively maintained, and this fork of pyelliptic will track and +incorporate any changes to pyelliptic from BitMessage. Ideally, in the future, +BitMessage would import this module as a dependency instead of maintaining a +copy of the source in its repository. + +The BitMessage fork forked from v1.3 of upstream pyelliptic. The commits in +this repository are the commits extracted from the BitMessage repository and +applied to pyelliptic v1.3 upstream repository (i.e. to the base of the fork), +so history with athorship is preserved. + +Some of the changes in upstream pyelliptic between 1.3 and 1.5.8 came from +BitMessage, those changes are present in this fork. Other changes do not exist +in this fork (they may be added in the future). + +Also, a few minor changes exist in this fork but is not (yet) present in +BitMessage source. See: + + git log 1.3-PyBitmessage-37489cf7feff8d5047f24baa8f6d27f353a6d6ac..HEAD + +## Features + +### Asymmetric cryptography using Elliptic Curve Cryptography (ECC) + +* Key agreement : ECDH +* Digital signatures : ECDSA +* Hybrid encryption : ECIES (like RSA) + +### Symmetric cryptography + +* AES-128 (CBC, OFB, CFB, CTR) +* AES-256 (CBC, OFB, CFB, CTR) +* Blowfish (CFB and CBC) +* RC4 + +### Other + +* CSPRNG +* HMAC (using SHA512) +* PBKDF2 (SHA256 and SHA512) + +## Example + +```python +#!/usr/bin/python + +import pyelliptic + +# Symmetric encryption +iv = pyelliptic.Cipher.gen_IV('aes-256-cfb') +ctx = pyelliptic.Cipher("secretkey", iv, 1, ciphername='aes-256-cfb') + +ciphertext = ctx.update('test1') +ciphertext += ctx.update('test2') +ciphertext += ctx.final() + +ctx2 = pyelliptic.Cipher("secretkey", iv, 0, ciphername='aes-256-cfb') +print ctx2.ciphering(ciphertext) + +# Asymmetric encryption +alice = pyelliptic.ECC() # default curve: sect283r1 +bob = pyelliptic.ECC(curve='sect571r1') + +ciphertext = alice.encrypt("Hello Bob", bob.get_pubkey()) +print bob.decrypt(ciphertext) + +signature = bob.sign("Hello Alice") +# alice's job : +print pyelliptic.ECC(pubkey=bob.get_pubkey()).verify(signature, "Hello Alice") + +# ERROR !!! +try: + key = alice.get_ecdh_key(bob.get_pubkey()) +except: print("For ECDH key agreement, the keys must be defined on the same curve !") + +alice = pyelliptic.ECC(curve='sect571r1') +print alice.get_ecdh_key(bob.get_pubkey()).encode('hex') +print bob.get_ecdh_key(alice.get_pubkey()).encode('hex') +``` diff --git a/src/lib/pyelliptic/__init__.py b/src/lib/pyelliptic/__init__.py new file mode 100644 index 00000000..761d08af --- /dev/null +++ b/src/lib/pyelliptic/__init__.py @@ -0,0 +1,19 @@ +# Copyright (C) 2010 +# Author: Yann GUIBET +# Contact: + +__version__ = '1.3' + +__all__ = [ + 'OpenSSL', + 'ECC', + 'Cipher', + 'hmac_sha256', + 'hmac_sha512', + 'pbkdf2' +] + +from .openssl import OpenSSL +from .ecc import ECC +from .cipher import Cipher +from .hash import hmac_sha256, hmac_sha512, pbkdf2 diff --git a/src/lib/pyelliptic/arithmetic.py b/src/lib/pyelliptic/arithmetic.py new file mode 100644 index 00000000..95c85b93 --- /dev/null +++ b/src/lib/pyelliptic/arithmetic.py @@ -0,0 +1,144 @@ +# pylint: disable=missing-docstring,too-many-function-args + +import hashlib +import re + +P = 2**256 - 2**32 - 2**9 - 2**8 - 2**7 - 2**6 - 2**4 - 1 +A = 0 +Gx = 55066263022277343669578718895168534326250603453777594175500187360389116729240 +Gy = 32670510020758816978083085130507043184471273380659243275938904335757337482424 +G = (Gx, Gy) + + +def inv(a, n): + lm, hm = 1, 0 + low, high = a % n, n + while low > 1: + r = high / low + nm, new = hm - lm * r, high - low * r + lm, low, hm, high = nm, new, lm, low + return lm % n + + +def get_code_string(base): + if base == 2: + return '01' + elif base == 10: + return '0123456789' + elif base == 16: + return "0123456789abcdef" + elif base == 58: + return "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz" + elif base == 256: + return ''.join([chr(x) for x in range(256)]) + else: + raise ValueError("Invalid base!") + + +def encode(val, base, minlen=0): + code_string = get_code_string(base) + result = "" + while val > 0: + result = code_string[val % base] + result + val /= base + if len(result) < minlen: + result = code_string[0] * (minlen - len(result)) + result + return result + + +def decode(string, base): + code_string = get_code_string(base) + result = 0 + if base == 16: + string = string.lower() + while string: + result *= base + result += code_string.find(string[0]) + string = string[1:] + return result + + +def changebase(string, frm, to, minlen=0): + return encode(decode(string, frm), to, minlen) + + +def base10_add(a, b): + if a is None: + return b[0], b[1] + if b is None: + return a[0], a[1] + if a[0] == b[0]: + if a[1] == b[1]: + return base10_double(a[0], a[1]) + return None + m = ((b[1] - a[1]) * inv(b[0] - a[0], P)) % P + x = (m * m - a[0] - b[0]) % P + y = (m * (a[0] - x) - a[1]) % P + return (x, y) + + +def base10_double(a): + if a is None: + return None + m = ((3 * a[0] * a[0] + A) * inv(2 * a[1], P)) % P + x = (m * m - 2 * a[0]) % P + y = (m * (a[0] - x) - a[1]) % P + return (x, y) + + +def base10_multiply(a, n): + if n == 0: + return G + if n == 1: + return a + if (n % 2) == 0: + return base10_double(base10_multiply(a, n / 2)) + if (n % 2) == 1: + return base10_add(base10_double(base10_multiply(a, n / 2)), a) + return None + + +def hex_to_point(h): + return (decode(h[2:66], 16), decode(h[66:], 16)) + + +def point_to_hex(p): + return '04' + encode(p[0], 16, 64) + encode(p[1], 16, 64) + + +def multiply(privkey, pubkey): + return point_to_hex(base10_multiply(hex_to_point(pubkey), decode(privkey, 16))) + + +def privtopub(privkey): + return point_to_hex(base10_multiply(G, decode(privkey, 16))) + + +def add(p1, p2): + if len(p1) == 32: + return encode(decode(p1, 16) + decode(p2, 16) % P, 16, 32) + return point_to_hex(base10_add(hex_to_point(p1), hex_to_point(p2))) + + +def hash_160(string): + intermed = hashlib.sha256(string).digest() + ripemd160 = hashlib.new('ripemd160') + ripemd160.update(intermed) + return ripemd160.digest() + + +def dbl_sha256(string): + return hashlib.sha256(hashlib.sha256(string).digest()).digest() + + +def bin_to_b58check(inp): + inp_fmtd = '\x00' + inp + leadingzbytes = len(re.match('^\x00*', inp_fmtd).group(0)) + checksum = dbl_sha256(inp_fmtd)[:4] + return '1' * leadingzbytes + changebase(inp_fmtd + checksum, 256, 58) + +# Convert a public key (in hex) to a Bitcoin address + + +def pubkey_to_address(pubkey): + return bin_to_b58check(hash_160(changebase(pubkey, 16, 256))) diff --git a/src/lib/pyelliptic/cipher.py b/src/lib/pyelliptic/cipher.py new file mode 100644 index 00000000..b597cafa --- /dev/null +++ b/src/lib/pyelliptic/cipher.py @@ -0,0 +1,84 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- + +# Copyright (C) 2011 Yann GUIBET +# See LICENSE for details. + +from pyelliptic.openssl import OpenSSL + + +class Cipher: + """ + Symmetric encryption + + import pyelliptic + iv = pyelliptic.Cipher.gen_IV('aes-256-cfb') + ctx = pyelliptic.Cipher("secretkey", iv, 1, ciphername='aes-256-cfb') + ciphertext = ctx.update('test1') + ciphertext += ctx.update('test2') + ciphertext += ctx.final() + + ctx2 = pyelliptic.Cipher("secretkey", iv, 0, ciphername='aes-256-cfb') + print ctx2.ciphering(ciphertext) + """ + def __init__(self, key, iv, do, ciphername='aes-256-cbc'): + """ + do == 1 => Encrypt; do == 0 => Decrypt + """ + self.cipher = OpenSSL.get_cipher(ciphername) + self.ctx = OpenSSL.EVP_CIPHER_CTX_new() + if do == 1 or do == 0: + k = OpenSSL.malloc(key, len(key)) + IV = OpenSSL.malloc(iv, len(iv)) + OpenSSL.EVP_CipherInit_ex( + self.ctx, self.cipher.get_pointer(), 0, k, IV, do) + else: + raise Exception("RTFM ...") + + @staticmethod + def get_all_cipher(): + """ + static method, returns all ciphers available + """ + return OpenSSL.cipher_algo.keys() + + @staticmethod + def get_blocksize(ciphername): + cipher = OpenSSL.get_cipher(ciphername) + return cipher.get_blocksize() + + @staticmethod + def gen_IV(ciphername): + cipher = OpenSSL.get_cipher(ciphername) + return OpenSSL.rand(cipher.get_blocksize()) + + def update(self, input): + i = OpenSSL.c_int(0) + buffer = OpenSSL.malloc(b"", len(input) + self.cipher.get_blocksize()) + inp = OpenSSL.malloc(input, len(input)) + if OpenSSL.EVP_CipherUpdate(self.ctx, OpenSSL.byref(buffer), + OpenSSL.byref(i), inp, len(input)) == 0: + raise Exception("[OpenSSL] EVP_CipherUpdate FAIL ...") + return buffer.raw[0:i.value] + + def final(self): + i = OpenSSL.c_int(0) + buffer = OpenSSL.malloc(b"", self.cipher.get_blocksize()) + if (OpenSSL.EVP_CipherFinal_ex(self.ctx, OpenSSL.byref(buffer), + OpenSSL.byref(i))) == 0: + raise Exception("[OpenSSL] EVP_CipherFinal_ex FAIL ...") + return buffer.raw[0:i.value] + + def ciphering(self, input): + """ + Do update and final in one method + """ + buff = self.update(input) + return buff + self.final() + + def __del__(self): + if OpenSSL._hexversion > 0x10100000 and not OpenSSL._libreSSL: + OpenSSL.EVP_CIPHER_CTX_reset(self.ctx) + else: + OpenSSL.EVP_CIPHER_CTX_cleanup(self.ctx) + OpenSSL.EVP_CIPHER_CTX_free(self.ctx) diff --git a/src/lib/pyelliptic/ecc.py b/src/lib/pyelliptic/ecc.py new file mode 100644 index 00000000..a70a1a5b --- /dev/null +++ b/src/lib/pyelliptic/ecc.py @@ -0,0 +1,505 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- +""" +pyelliptic/ecc.py +===================== +""" +# pylint: disable=protected-access + +# Copyright (C) 2011 Yann GUIBET +# See LICENSE for details. + +from hashlib import sha512 +from struct import pack, unpack + +from pyelliptic.cipher import Cipher +from pyelliptic.hash import equals, hmac_sha256 +from pyelliptic.openssl import OpenSSL + + +class ECC(object): + """ + Asymmetric encryption with Elliptic Curve Cryptography (ECC) + ECDH, ECDSA and ECIES + + >>> import pyelliptic + + >>> alice = pyelliptic.ECC() # default curve: sect283r1 + >>> bob = pyelliptic.ECC(curve='sect571r1') + + >>> ciphertext = alice.encrypt("Hello Bob", bob.get_pubkey()) + >>> print bob.decrypt(ciphertext) + + >>> signature = bob.sign("Hello Alice") + >>> # alice's job : + >>> print pyelliptic.ECC( + >>> pubkey=bob.get_pubkey()).verify(signature, "Hello Alice") + + >>> # ERROR !!! + >>> try: + >>> key = alice.get_ecdh_key(bob.get_pubkey()) + >>> except: + >>> print("For ECDH key agreement, the keys must be defined on the same curve !") + + >>> alice = pyelliptic.ECC(curve='sect571r1') + >>> print alice.get_ecdh_key(bob.get_pubkey()).encode('hex') + >>> print bob.get_ecdh_key(alice.get_pubkey()).encode('hex') + + """ + + def __init__( + self, + pubkey=None, + privkey=None, + pubkey_x=None, + pubkey_y=None, + raw_privkey=None, + curve='sect283r1', + ): # pylint: disable=too-many-arguments + """ + For a normal and High level use, specifie pubkey, + privkey (if you need) and the curve + """ + if isinstance(curve, str): + self.curve = OpenSSL.get_curve(curve) + else: + self.curve = curve + + if pubkey_x is not None and pubkey_y is not None: + self._set_keys(pubkey_x, pubkey_y, raw_privkey) + elif pubkey is not None: + curve, pubkey_x, pubkey_y, _ = ECC._decode_pubkey(pubkey) + if privkey is not None: + curve2, raw_privkey, _ = ECC._decode_privkey(privkey) + if curve != curve2: + raise Exception("Bad ECC keys ...") + self.curve = curve + self._set_keys(pubkey_x, pubkey_y, raw_privkey) + else: + self.privkey, self.pubkey_x, self.pubkey_y = self._generate() + + def _set_keys(self, pubkey_x, pubkey_y, privkey): + if self.raw_check_key(privkey, pubkey_x, pubkey_y) < 0: + self.pubkey_x = None + self.pubkey_y = None + self.privkey = None + raise Exception("Bad ECC keys ...") + else: + self.pubkey_x = pubkey_x + self.pubkey_y = pubkey_y + self.privkey = privkey + + @staticmethod + def get_curves(): + """ + static method, returns the list of all the curves available + """ + return OpenSSL.curves.keys() + + def get_curve(self): + """Encryption object from curve name""" + return OpenSSL.get_curve_by_id(self.curve) + + def get_curve_id(self): + """Currently used curve""" + return self.curve + + def get_pubkey(self): + """ + High level function which returns : + curve(2) + len_of_pubkeyX(2) + pubkeyX + len_of_pubkeyY + pubkeyY + """ + return b''.join(( + pack('!H', self.curve), + pack('!H', len(self.pubkey_x)), + self.pubkey_x, + pack('!H', len(self.pubkey_y)), + self.pubkey_y, + )) + + def get_privkey(self): + """ + High level function which returns + curve(2) + len_of_privkey(2) + privkey + """ + return b''.join(( + pack('!H', self.curve), + pack('!H', len(self.privkey)), + self.privkey, + )) + + @staticmethod + def _decode_pubkey(pubkey): + i = 0 + curve = unpack('!H', pubkey[i:i + 2])[0] + i += 2 + tmplen = unpack('!H', pubkey[i:i + 2])[0] + i += 2 + pubkey_x = pubkey[i:i + tmplen] + i += tmplen + tmplen = unpack('!H', pubkey[i:i + 2])[0] + i += 2 + pubkey_y = pubkey[i:i + tmplen] + i += tmplen + return curve, pubkey_x, pubkey_y, i + + @staticmethod + def _decode_privkey(privkey): + i = 0 + curve = unpack('!H', privkey[i:i + 2])[0] + i += 2 + tmplen = unpack('!H', privkey[i:i + 2])[0] + i += 2 + privkey = privkey[i:i + tmplen] + i += tmplen + return curve, privkey, i + + def _generate(self): + try: + pub_key_x = OpenSSL.BN_new() + pub_key_y = OpenSSL.BN_new() + + key = OpenSSL.EC_KEY_new_by_curve_name(self.curve) + if key == 0: + raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...") + if (OpenSSL.EC_KEY_generate_key(key)) == 0: + raise Exception("[OpenSSL] EC_KEY_generate_key FAIL ...") + if (OpenSSL.EC_KEY_check_key(key)) == 0: + raise Exception("[OpenSSL] EC_KEY_check_key FAIL ...") + priv_key = OpenSSL.EC_KEY_get0_private_key(key) + + group = OpenSSL.EC_KEY_get0_group(key) + pub_key = OpenSSL.EC_KEY_get0_public_key(key) + + if OpenSSL.EC_POINT_get_affine_coordinates_GFp( + group, pub_key, pub_key_x, pub_key_y, 0) == 0: + raise Exception("[OpenSSL] EC_POINT_get_affine_coordinates_GFp FAIL ...") + + privkey = OpenSSL.malloc(0, OpenSSL.BN_num_bytes(priv_key)) + pubkeyx = OpenSSL.malloc(0, OpenSSL.BN_num_bytes(pub_key_x)) + pubkeyy = OpenSSL.malloc(0, OpenSSL.BN_num_bytes(pub_key_y)) + OpenSSL.BN_bn2bin(priv_key, privkey) + privkey = privkey.raw + OpenSSL.BN_bn2bin(pub_key_x, pubkeyx) + pubkeyx = pubkeyx.raw + OpenSSL.BN_bn2bin(pub_key_y, pubkeyy) + pubkeyy = pubkeyy.raw + self.raw_check_key(privkey, pubkeyx, pubkeyy) + + return privkey, pubkeyx, pubkeyy + + finally: + OpenSSL.EC_KEY_free(key) + OpenSSL.BN_free(pub_key_x) + OpenSSL.BN_free(pub_key_y) + + def get_ecdh_key(self, pubkey): + """ + High level function. Compute public key with the local private key + and returns a 512bits shared key + """ + curve, pubkey_x, pubkey_y, _ = ECC._decode_pubkey(pubkey) + if curve != self.curve: + raise Exception("ECC keys must be from the same curve !") + return sha512(self.raw_get_ecdh_key(pubkey_x, pubkey_y)).digest() + + def raw_get_ecdh_key(self, pubkey_x, pubkey_y): + """ECDH key as binary data""" + try: + ecdh_keybuffer = OpenSSL.malloc(0, 32) + + other_key = OpenSSL.EC_KEY_new_by_curve_name(self.curve) + if other_key == 0: + raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...") + + other_pub_key_x = OpenSSL.BN_bin2bn(pubkey_x, len(pubkey_x), 0) + other_pub_key_y = OpenSSL.BN_bin2bn(pubkey_y, len(pubkey_y), 0) + + other_group = OpenSSL.EC_KEY_get0_group(other_key) + other_pub_key = OpenSSL.EC_POINT_new(other_group) + + if (OpenSSL.EC_POINT_set_affine_coordinates_GFp(other_group, + other_pub_key, + other_pub_key_x, + other_pub_key_y, + 0)) == 0: + raise Exception( + "[OpenSSL] EC_POINT_set_affine_coordinates_GFp FAIL ...") + if (OpenSSL.EC_KEY_set_public_key(other_key, other_pub_key)) == 0: + raise Exception("[OpenSSL] EC_KEY_set_public_key FAIL ...") + if (OpenSSL.EC_KEY_check_key(other_key)) == 0: + raise Exception("[OpenSSL] EC_KEY_check_key FAIL ...") + + own_key = OpenSSL.EC_KEY_new_by_curve_name(self.curve) + if own_key == 0: + raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...") + own_priv_key = OpenSSL.BN_bin2bn( + self.privkey, len(self.privkey), 0) + + if (OpenSSL.EC_KEY_set_private_key(own_key, own_priv_key)) == 0: + raise Exception("[OpenSSL] EC_KEY_set_private_key FAIL ...") + + if OpenSSL._hexversion > 0x10100000 and not OpenSSL._libreSSL: + OpenSSL.EC_KEY_set_method(own_key, OpenSSL.EC_KEY_OpenSSL()) + else: + OpenSSL.ECDH_set_method(own_key, OpenSSL.ECDH_OpenSSL()) + ecdh_keylen = OpenSSL.ECDH_compute_key( + ecdh_keybuffer, 32, other_pub_key, own_key, 0) + + if ecdh_keylen != 32: + raise Exception("[OpenSSL] ECDH keylen FAIL ...") + + return ecdh_keybuffer.raw + + finally: + OpenSSL.EC_KEY_free(other_key) + OpenSSL.BN_free(other_pub_key_x) + OpenSSL.BN_free(other_pub_key_y) + OpenSSL.EC_POINT_free(other_pub_key) + OpenSSL.EC_KEY_free(own_key) + OpenSSL.BN_free(own_priv_key) + + def check_key(self, privkey, pubkey): + """ + Check the public key and the private key. + The private key is optional (replace by None) + """ + curve, pubkey_x, pubkey_y, _ = ECC._decode_pubkey(pubkey) + if privkey is None: + raw_privkey = None + curve2 = curve + else: + curve2, raw_privkey, _ = ECC._decode_privkey(privkey) + if curve != curve2: + raise Exception("Bad public and private key") + return self.raw_check_key(raw_privkey, pubkey_x, pubkey_y, curve) + + def raw_check_key(self, privkey, pubkey_x, pubkey_y, curve=None): + """Check key validity, key is supplied as binary data""" + # pylint: disable=too-many-branches + if curve is None: + curve = self.curve + elif isinstance(curve, str): + curve = OpenSSL.get_curve(curve) + else: + curve = curve + try: + key = OpenSSL.EC_KEY_new_by_curve_name(curve) + if key == 0: + raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...") + if privkey is not None: + priv_key = OpenSSL.BN_bin2bn(privkey, len(privkey), 0) + pub_key_x = OpenSSL.BN_bin2bn(pubkey_x, len(pubkey_x), 0) + pub_key_y = OpenSSL.BN_bin2bn(pubkey_y, len(pubkey_y), 0) + + if privkey is not None: + if (OpenSSL.EC_KEY_set_private_key(key, priv_key)) == 0: + raise Exception( + "[OpenSSL] EC_KEY_set_private_key FAIL ...") + + group = OpenSSL.EC_KEY_get0_group(key) + pub_key = OpenSSL.EC_POINT_new(group) + + if (OpenSSL.EC_POINT_set_affine_coordinates_GFp(group, pub_key, + pub_key_x, + pub_key_y, + 0)) == 0: + raise Exception( + "[OpenSSL] EC_POINT_set_affine_coordinates_GFp FAIL ...") + if (OpenSSL.EC_KEY_set_public_key(key, pub_key)) == 0: + raise Exception("[OpenSSL] EC_KEY_set_public_key FAIL ...") + if (OpenSSL.EC_KEY_check_key(key)) == 0: + raise Exception("[OpenSSL] EC_KEY_check_key FAIL ...") + return 0 + + finally: + OpenSSL.EC_KEY_free(key) + OpenSSL.BN_free(pub_key_x) + OpenSSL.BN_free(pub_key_y) + OpenSSL.EC_POINT_free(pub_key) + if privkey is not None: + OpenSSL.BN_free(priv_key) + + def sign(self, inputb, digest_alg=OpenSSL.digest_ecdsa_sha1): + """ + Sign the input with ECDSA method and returns the signature + """ + # pylint: disable=too-many-branches,too-many-locals + try: + size = len(inputb) + buff = OpenSSL.malloc(inputb, size) + digest = OpenSSL.malloc(0, 64) + if OpenSSL._hexversion > 0x10100000 and not OpenSSL._libreSSL: + md_ctx = OpenSSL.EVP_MD_CTX_new() + else: + md_ctx = OpenSSL.EVP_MD_CTX_create() + dgst_len = OpenSSL.pointer(OpenSSL.c_int(0)) + siglen = OpenSSL.pointer(OpenSSL.c_int(0)) + sig = OpenSSL.malloc(0, 151) + + key = OpenSSL.EC_KEY_new_by_curve_name(self.curve) + if key == 0: + raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...") + + priv_key = OpenSSL.BN_bin2bn(self.privkey, len(self.privkey), 0) + pub_key_x = OpenSSL.BN_bin2bn(self.pubkey_x, len(self.pubkey_x), 0) + pub_key_y = OpenSSL.BN_bin2bn(self.pubkey_y, len(self.pubkey_y), 0) + + if (OpenSSL.EC_KEY_set_private_key(key, priv_key)) == 0: + raise Exception("[OpenSSL] EC_KEY_set_private_key FAIL ...") + + group = OpenSSL.EC_KEY_get0_group(key) + pub_key = OpenSSL.EC_POINT_new(group) + + if (OpenSSL.EC_POINT_set_affine_coordinates_GFp(group, pub_key, + pub_key_x, + pub_key_y, + 0)) == 0: + raise Exception( + "[OpenSSL] EC_POINT_set_affine_coordinates_GFp FAIL ...") + if (OpenSSL.EC_KEY_set_public_key(key, pub_key)) == 0: + raise Exception("[OpenSSL] EC_KEY_set_public_key FAIL ...") + if (OpenSSL.EC_KEY_check_key(key)) == 0: + raise Exception("[OpenSSL] EC_KEY_check_key FAIL ...") + + if OpenSSL._hexversion > 0x10100000 and not OpenSSL._libreSSL: + OpenSSL.EVP_MD_CTX_new(md_ctx) + else: + OpenSSL.EVP_MD_CTX_init(md_ctx) + OpenSSL.EVP_DigestInit_ex(md_ctx, digest_alg(), None) + + if (OpenSSL.EVP_DigestUpdate(md_ctx, buff, size)) == 0: + raise Exception("[OpenSSL] EVP_DigestUpdate FAIL ...") + OpenSSL.EVP_DigestFinal_ex(md_ctx, digest, dgst_len) + OpenSSL.ECDSA_sign(0, digest, dgst_len.contents, sig, siglen, key) + if (OpenSSL.ECDSA_verify(0, digest, dgst_len.contents, sig, + siglen.contents, key)) != 1: + raise Exception("[OpenSSL] ECDSA_verify FAIL ...") + + return sig.raw[:siglen.contents.value] + + finally: + OpenSSL.EC_KEY_free(key) + OpenSSL.BN_free(pub_key_x) + OpenSSL.BN_free(pub_key_y) + OpenSSL.BN_free(priv_key) + OpenSSL.EC_POINT_free(pub_key) + if OpenSSL._hexversion > 0x10100000 and not OpenSSL._libreSSL: + OpenSSL.EVP_MD_CTX_free(md_ctx) + else: + OpenSSL.EVP_MD_CTX_destroy(md_ctx) + + def verify(self, sig, inputb, digest_alg=OpenSSL.digest_ecdsa_sha1): + """ + Verify the signature with the input and the local public key. + Returns a boolean + """ + # pylint: disable=too-many-branches + try: + bsig = OpenSSL.malloc(sig, len(sig)) + binputb = OpenSSL.malloc(inputb, len(inputb)) + digest = OpenSSL.malloc(0, 64) + dgst_len = OpenSSL.pointer(OpenSSL.c_int(0)) + if OpenSSL._hexversion > 0x10100000 and not OpenSSL._libreSSL: + md_ctx = OpenSSL.EVP_MD_CTX_new() + else: + md_ctx = OpenSSL.EVP_MD_CTX_create() + key = OpenSSL.EC_KEY_new_by_curve_name(self.curve) + + if key == 0: + raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...") + + pub_key_x = OpenSSL.BN_bin2bn(self.pubkey_x, len(self.pubkey_x), 0) + pub_key_y = OpenSSL.BN_bin2bn(self.pubkey_y, len(self.pubkey_y), 0) + group = OpenSSL.EC_KEY_get0_group(key) + pub_key = OpenSSL.EC_POINT_new(group) + + if (OpenSSL.EC_POINT_set_affine_coordinates_GFp(group, pub_key, + pub_key_x, + pub_key_y, + 0)) == 0: + raise Exception( + "[OpenSSL] EC_POINT_set_affine_coordinates_GFp FAIL ...") + if (OpenSSL.EC_KEY_set_public_key(key, pub_key)) == 0: + raise Exception("[OpenSSL] EC_KEY_set_public_key FAIL ...") + if (OpenSSL.EC_KEY_check_key(key)) == 0: + raise Exception("[OpenSSL] EC_KEY_check_key FAIL ...") + if OpenSSL._hexversion > 0x10100000 and not OpenSSL._libreSSL: + OpenSSL.EVP_MD_CTX_new(md_ctx) + else: + OpenSSL.EVP_MD_CTX_init(md_ctx) + OpenSSL.EVP_DigestInit_ex(md_ctx, digest_alg(), None) + if (OpenSSL.EVP_DigestUpdate(md_ctx, binputb, len(inputb))) == 0: + raise Exception("[OpenSSL] EVP_DigestUpdate FAIL ...") + + OpenSSL.EVP_DigestFinal_ex(md_ctx, digest, dgst_len) + ret = OpenSSL.ECDSA_verify( + 0, digest, dgst_len.contents, bsig, len(sig), key) + + if ret == -1: + return False # Fail to Check + if ret == 0: + return False # Bad signature ! + return True # Good + + finally: + OpenSSL.EC_KEY_free(key) + OpenSSL.BN_free(pub_key_x) + OpenSSL.BN_free(pub_key_y) + OpenSSL.EC_POINT_free(pub_key) + if OpenSSL._hexversion > 0x10100000 and not OpenSSL._libreSSL: + OpenSSL.EVP_MD_CTX_free(md_ctx) + else: + OpenSSL.EVP_MD_CTX_destroy(md_ctx) + + @staticmethod + def encrypt(data, pubkey, ephemcurve=None, ciphername='aes-256-cbc'): + """ + Encrypt data with ECIES method using the public key of the recipient. + """ + curve, pubkey_x, pubkey_y, _ = ECC._decode_pubkey(pubkey) + return ECC.raw_encrypt(data, pubkey_x, pubkey_y, curve=curve, + ephemcurve=ephemcurve, ciphername=ciphername) + + @staticmethod + def raw_encrypt( + data, + pubkey_x, + pubkey_y, + curve='sect283r1', + ephemcurve=None, + ciphername='aes-256-cbc', + ): # pylint: disable=too-many-arguments + """ECHD encryption, keys supplied in binary data format""" + + if ephemcurve is None: + ephemcurve = curve + ephem = ECC(curve=ephemcurve) + key = sha512(ephem.raw_get_ecdh_key(pubkey_x, pubkey_y)).digest() + key_e, key_m = key[:32], key[32:] + pubkey = ephem.get_pubkey() + iv = OpenSSL.rand(OpenSSL.get_cipher(ciphername).get_blocksize()) + ctx = Cipher(key_e, iv, 1, ciphername) + ciphertext = iv + pubkey + ctx.ciphering(data) + mac = hmac_sha256(key_m, ciphertext) + return ciphertext + mac + + def decrypt(self, data, ciphername='aes-256-cbc'): + """ + Decrypt data with ECIES method using the local private key + """ + # pylint: disable=too-many-locals + blocksize = OpenSSL.get_cipher(ciphername).get_blocksize() + iv = data[:blocksize] + i = blocksize + _, pubkey_x, pubkey_y, i2 = ECC._decode_pubkey(data[i:]) + i += i2 + ciphertext = data[i:len(data) - 32] + i += len(ciphertext) + mac = data[i:] + key = sha512(self.raw_get_ecdh_key(pubkey_x, pubkey_y)).digest() + key_e, key_m = key[:32], key[32:] + if not equals(hmac_sha256(key_m, data[:len(data) - 32]), mac): + raise RuntimeError("Fail to verify data") + ctx = Cipher(key_e, iv, 0, ciphername) + return ctx.ciphering(ciphertext) diff --git a/src/lib/pyelliptic/hash.py b/src/lib/pyelliptic/hash.py new file mode 100644 index 00000000..fb910dd4 --- /dev/null +++ b/src/lib/pyelliptic/hash.py @@ -0,0 +1,69 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- + +# Copyright (C) 2011 Yann GUIBET +# See LICENSE for details. + +from pyelliptic.openssl import OpenSSL + + +# For python3 +def _equals_bytes(a, b): + if len(a) != len(b): + return False + result = 0 + for x, y in zip(a, b): + result |= x ^ y + return result == 0 + + +def _equals_str(a, b): + if len(a) != len(b): + return False + result = 0 + for x, y in zip(a, b): + result |= ord(x) ^ ord(y) + return result == 0 + + +def equals(a, b): + if isinstance(a, str): + return _equals_str(a, b) + else: + return _equals_bytes(a, b) + + +def hmac_sha256(k, m): + """ + Compute the key and the message with HMAC SHA5256 + """ + key = OpenSSL.malloc(k, len(k)) + d = OpenSSL.malloc(m, len(m)) + md = OpenSSL.malloc(0, 32) + i = OpenSSL.pointer(OpenSSL.c_int(0)) + OpenSSL.HMAC(OpenSSL.EVP_sha256(), key, len(k), d, len(m), md, i) + return md.raw + + +def hmac_sha512(k, m): + """ + Compute the key and the message with HMAC SHA512 + """ + key = OpenSSL.malloc(k, len(k)) + d = OpenSSL.malloc(m, len(m)) + md = OpenSSL.malloc(0, 64) + i = OpenSSL.pointer(OpenSSL.c_int(0)) + OpenSSL.HMAC(OpenSSL.EVP_sha512(), key, len(k), d, len(m), md, i) + return md.raw + + +def pbkdf2(password, salt=None, i=10000, keylen=64): + if salt is None: + salt = OpenSSL.rand(8) + p_password = OpenSSL.malloc(password, len(password)) + p_salt = OpenSSL.malloc(salt, len(salt)) + output = OpenSSL.malloc(0, keylen) + OpenSSL.PKCS5_PBKDF2_HMAC(p_password, len(password), p_salt, + len(p_salt), i, OpenSSL.EVP_sha256(), + keylen, output) + return salt, output.raw diff --git a/src/lib/pyelliptic/openssl.py b/src/lib/pyelliptic/openssl.py new file mode 100644 index 00000000..02551267 --- /dev/null +++ b/src/lib/pyelliptic/openssl.py @@ -0,0 +1,551 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- + +# Copyright (C) 2011 Yann GUIBET +# See LICENSE for details. +# +# Software slightly changed by Jonathan Warren + +import sys +import ctypes + +OpenSSL = None + + +class CipherName: + def __init__(self, name, pointer, blocksize): + self._name = name + self._pointer = pointer + self._blocksize = blocksize + + def __str__(self): + return "Cipher : " + self._name + " | Blocksize : " + str(self._blocksize) + " | Fonction pointer : " + str(self._pointer) + + def get_pointer(self): + return self._pointer() + + def get_name(self): + return self._name + + def get_blocksize(self): + return self._blocksize + + +def get_version(library): + version = None + hexversion = None + cflags = None + try: + #OpenSSL 1.1 + OPENSSL_VERSION = 0 + OPENSSL_CFLAGS = 1 + library.OpenSSL_version.argtypes = [ctypes.c_int] + library.OpenSSL_version.restype = ctypes.c_char_p + version = library.OpenSSL_version(OPENSSL_VERSION) + cflags = library.OpenSSL_version(OPENSSL_CFLAGS) + library.OpenSSL_version_num.restype = ctypes.c_long + hexversion = library.OpenSSL_version_num() + except AttributeError: + try: + #OpenSSL 1.0 + SSLEAY_VERSION = 0 + SSLEAY_CFLAGS = 2 + library.SSLeay.restype = ctypes.c_long + library.SSLeay_version.restype = ctypes.c_char_p + library.SSLeay_version.argtypes = [ctypes.c_int] + version = library.SSLeay_version(SSLEAY_VERSION) + cflags = library.SSLeay_version(SSLEAY_CFLAGS) + hexversion = library.SSLeay() + except AttributeError: + #raise NotImplementedError('Cannot determine version of this OpenSSL library.') + pass + return (version, hexversion, cflags) + + +class _OpenSSL: + """ + Wrapper for OpenSSL using ctypes + """ + def __init__(self, library): + """ + Build the wrapper + """ + self._lib = ctypes.CDLL(library) + self._version, self._hexversion, self._cflags = get_version(self._lib) + self._libreSSL = self._version.startswith(b"LibreSSL") + + self.pointer = ctypes.pointer + self.c_int = ctypes.c_int + self.byref = ctypes.byref + self.create_string_buffer = ctypes.create_string_buffer + + self.BN_new = self._lib.BN_new + self.BN_new.restype = ctypes.c_void_p + self.BN_new.argtypes = [] + + self.BN_free = self._lib.BN_free + self.BN_free.restype = None + self.BN_free.argtypes = [ctypes.c_void_p] + + self.BN_num_bits = self._lib.BN_num_bits + self.BN_num_bits.restype = ctypes.c_int + self.BN_num_bits.argtypes = [ctypes.c_void_p] + + self.BN_bn2bin = self._lib.BN_bn2bin + self.BN_bn2bin.restype = ctypes.c_int + self.BN_bn2bin.argtypes = [ctypes.c_void_p, ctypes.c_void_p] + + self.BN_bin2bn = self._lib.BN_bin2bn + self.BN_bin2bn.restype = ctypes.c_void_p + self.BN_bin2bn.argtypes = [ctypes.c_void_p, ctypes.c_int, + ctypes.c_void_p] + + self.EC_KEY_free = self._lib.EC_KEY_free + self.EC_KEY_free.restype = None + self.EC_KEY_free.argtypes = [ctypes.c_void_p] + + self.EC_KEY_new_by_curve_name = self._lib.EC_KEY_new_by_curve_name + self.EC_KEY_new_by_curve_name.restype = ctypes.c_void_p + self.EC_KEY_new_by_curve_name.argtypes = [ctypes.c_int] + + self.EC_KEY_generate_key = self._lib.EC_KEY_generate_key + self.EC_KEY_generate_key.restype = ctypes.c_int + self.EC_KEY_generate_key.argtypes = [ctypes.c_void_p] + + self.EC_KEY_check_key = self._lib.EC_KEY_check_key + self.EC_KEY_check_key.restype = ctypes.c_int + self.EC_KEY_check_key.argtypes = [ctypes.c_void_p] + + self.EC_KEY_get0_private_key = self._lib.EC_KEY_get0_private_key + self.EC_KEY_get0_private_key.restype = ctypes.c_void_p + self.EC_KEY_get0_private_key.argtypes = [ctypes.c_void_p] + + self.EC_KEY_get0_public_key = self._lib.EC_KEY_get0_public_key + self.EC_KEY_get0_public_key.restype = ctypes.c_void_p + self.EC_KEY_get0_public_key.argtypes = [ctypes.c_void_p] + + self.EC_KEY_get0_group = self._lib.EC_KEY_get0_group + self.EC_KEY_get0_group.restype = ctypes.c_void_p + self.EC_KEY_get0_group.argtypes = [ctypes.c_void_p] + + self.EC_POINT_get_affine_coordinates_GFp = self._lib.EC_POINT_get_affine_coordinates_GFp + self.EC_POINT_get_affine_coordinates_GFp.restype = ctypes.c_int + 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] + + self.EC_KEY_set_private_key = self._lib.EC_KEY_set_private_key + self.EC_KEY_set_private_key.restype = ctypes.c_int + self.EC_KEY_set_private_key.argtypes = [ctypes.c_void_p, + ctypes.c_void_p] + + self.EC_KEY_set_public_key = self._lib.EC_KEY_set_public_key + self.EC_KEY_set_public_key.restype = ctypes.c_int + self.EC_KEY_set_public_key.argtypes = [ctypes.c_void_p, + ctypes.c_void_p] + + self.EC_KEY_set_group = self._lib.EC_KEY_set_group + self.EC_KEY_set_group.restype = ctypes.c_int + self.EC_KEY_set_group.argtypes = [ctypes.c_void_p, ctypes.c_void_p] + + self.EC_POINT_set_affine_coordinates_GFp = self._lib.EC_POINT_set_affine_coordinates_GFp + self.EC_POINT_set_affine_coordinates_GFp.restype = ctypes.c_int + 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] + + self.EC_POINT_new = self._lib.EC_POINT_new + self.EC_POINT_new.restype = ctypes.c_void_p + self.EC_POINT_new.argtypes = [ctypes.c_void_p] + + self.EC_POINT_free = self._lib.EC_POINT_free + self.EC_POINT_free.restype = None + self.EC_POINT_free.argtypes = [ctypes.c_void_p] + + self.BN_CTX_free = self._lib.BN_CTX_free + self.BN_CTX_free.restype = None + self.BN_CTX_free.argtypes = [ctypes.c_void_p] + + self.EC_POINT_mul = self._lib.EC_POINT_mul + self.EC_POINT_mul.restype = ctypes.c_int + 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, ctypes.c_void_p] + + self.EC_KEY_set_private_key = self._lib.EC_KEY_set_private_key + self.EC_KEY_set_private_key.restype = ctypes.c_int + self.EC_KEY_set_private_key.argtypes = [ctypes.c_void_p, + ctypes.c_void_p] + + if self._hexversion >= 0x10100000 and not self._libreSSL: + self.EC_KEY_OpenSSL = self._lib.EC_KEY_OpenSSL + self._lib.EC_KEY_OpenSSL.restype = ctypes.c_void_p + self._lib.EC_KEY_OpenSSL.argtypes = [] + + self.EC_KEY_set_method = self._lib.EC_KEY_set_method + self._lib.EC_KEY_set_method.restype = ctypes.c_int + self._lib.EC_KEY_set_method.argtypes = [ctypes.c_void_p, ctypes.c_void_p] + else: + self.ECDH_OpenSSL = self._lib.ECDH_OpenSSL + self._lib.ECDH_OpenSSL.restype = ctypes.c_void_p + self._lib.ECDH_OpenSSL.argtypes = [] + + self.ECDH_set_method = self._lib.ECDH_set_method + self._lib.ECDH_set_method.restype = ctypes.c_int + self._lib.ECDH_set_method.argtypes = [ctypes.c_void_p, ctypes.c_void_p] + + self.BN_CTX_new = self._lib.BN_CTX_new + self._lib.BN_CTX_new.restype = ctypes.c_void_p + self._lib.BN_CTX_new.argtypes = [] + + self.ECDH_compute_key = self._lib.ECDH_compute_key + self.ECDH_compute_key.restype = ctypes.c_int + self.ECDH_compute_key.argtypes = [ctypes.c_void_p, + ctypes.c_int, ctypes.c_void_p, ctypes.c_void_p] + + self.EVP_CipherInit_ex = self._lib.EVP_CipherInit_ex + self.EVP_CipherInit_ex.restype = ctypes.c_int + self.EVP_CipherInit_ex.argtypes = [ctypes.c_void_p, + ctypes.c_void_p, ctypes.c_void_p] + + self.EVP_CIPHER_CTX_new = self._lib.EVP_CIPHER_CTX_new + self.EVP_CIPHER_CTX_new.restype = ctypes.c_void_p + self.EVP_CIPHER_CTX_new.argtypes = [] + + # Cipher + self.EVP_aes_128_cfb128 = self._lib.EVP_aes_128_cfb128 + self.EVP_aes_128_cfb128.restype = ctypes.c_void_p + self.EVP_aes_128_cfb128.argtypes = [] + + self.EVP_aes_256_cfb128 = self._lib.EVP_aes_256_cfb128 + self.EVP_aes_256_cfb128.restype = ctypes.c_void_p + self.EVP_aes_256_cfb128.argtypes = [] + + self.EVP_aes_128_cbc = self._lib.EVP_aes_128_cbc + self.EVP_aes_128_cbc.restype = ctypes.c_void_p + self.EVP_aes_128_cbc.argtypes = [] + + self.EVP_aes_256_cbc = self._lib.EVP_aes_256_cbc + self.EVP_aes_256_cbc.restype = ctypes.c_void_p + self.EVP_aes_256_cbc.argtypes = [] + + #self.EVP_aes_128_ctr = self._lib.EVP_aes_128_ctr + #self.EVP_aes_128_ctr.restype = ctypes.c_void_p + #self.EVP_aes_128_ctr.argtypes = [] + + #self.EVP_aes_256_ctr = self._lib.EVP_aes_256_ctr + #self.EVP_aes_256_ctr.restype = ctypes.c_void_p + #self.EVP_aes_256_ctr.argtypes = [] + + self.EVP_aes_128_ofb = self._lib.EVP_aes_128_ofb + self.EVP_aes_128_ofb.restype = ctypes.c_void_p + self.EVP_aes_128_ofb.argtypes = [] + + self.EVP_aes_256_ofb = self._lib.EVP_aes_256_ofb + self.EVP_aes_256_ofb.restype = ctypes.c_void_p + self.EVP_aes_256_ofb.argtypes = [] + + self.EVP_bf_cbc = self._lib.EVP_bf_cbc + self.EVP_bf_cbc.restype = ctypes.c_void_p + self.EVP_bf_cbc.argtypes = [] + + self.EVP_bf_cfb64 = self._lib.EVP_bf_cfb64 + self.EVP_bf_cfb64.restype = ctypes.c_void_p + self.EVP_bf_cfb64.argtypes = [] + + self.EVP_rc4 = self._lib.EVP_rc4 + self.EVP_rc4.restype = ctypes.c_void_p + self.EVP_rc4.argtypes = [] + + if self._hexversion >= 0x10100000 and not self._libreSSL: + self.EVP_CIPHER_CTX_reset = self._lib.EVP_CIPHER_CTX_reset + self.EVP_CIPHER_CTX_reset.restype = ctypes.c_int + self.EVP_CIPHER_CTX_reset.argtypes = [ctypes.c_void_p] + else: + self.EVP_CIPHER_CTX_cleanup = self._lib.EVP_CIPHER_CTX_cleanup + self.EVP_CIPHER_CTX_cleanup.restype = ctypes.c_int + self.EVP_CIPHER_CTX_cleanup.argtypes = [ctypes.c_void_p] + + self.EVP_CIPHER_CTX_free = self._lib.EVP_CIPHER_CTX_free + self.EVP_CIPHER_CTX_free.restype = None + self.EVP_CIPHER_CTX_free.argtypes = [ctypes.c_void_p] + + self.EVP_CipherUpdate = self._lib.EVP_CipherUpdate + self.EVP_CipherUpdate.restype = ctypes.c_int + self.EVP_CipherUpdate.argtypes = [ctypes.c_void_p, + ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_int] + + self.EVP_CipherFinal_ex = self._lib.EVP_CipherFinal_ex + self.EVP_CipherFinal_ex.restype = ctypes.c_int + self.EVP_CipherFinal_ex.argtypes = [ctypes.c_void_p, + ctypes.c_void_p, ctypes.c_void_p] + + self.EVP_DigestInit = self._lib.EVP_DigestInit + self.EVP_DigestInit.restype = ctypes.c_int + self._lib.EVP_DigestInit.argtypes = [ctypes.c_void_p, ctypes.c_void_p] + + self.EVP_DigestInit_ex = self._lib.EVP_DigestInit_ex + self.EVP_DigestInit_ex.restype = ctypes.c_int + self._lib.EVP_DigestInit_ex.argtypes = 3 * [ctypes.c_void_p] + + self.EVP_DigestUpdate = self._lib.EVP_DigestUpdate + self.EVP_DigestUpdate.restype = ctypes.c_int + self.EVP_DigestUpdate.argtypes = [ctypes.c_void_p, + ctypes.c_void_p, ctypes.c_int] + + self.EVP_DigestFinal = self._lib.EVP_DigestFinal + self.EVP_DigestFinal.restype = ctypes.c_int + self.EVP_DigestFinal.argtypes = [ctypes.c_void_p, + ctypes.c_void_p, ctypes.c_void_p] + + self.EVP_DigestFinal_ex = self._lib.EVP_DigestFinal_ex + self.EVP_DigestFinal_ex.restype = ctypes.c_int + self.EVP_DigestFinal_ex.argtypes = [ctypes.c_void_p, + ctypes.c_void_p, ctypes.c_void_p] + + self.ECDSA_sign = self._lib.ECDSA_sign + self.ECDSA_sign.restype = ctypes.c_int + self.ECDSA_sign.argtypes = [ctypes.c_int, ctypes.c_void_p, + ctypes.c_int, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p] + + self.ECDSA_verify = self._lib.ECDSA_verify + self.ECDSA_verify.restype = ctypes.c_int + self.ECDSA_verify.argtypes = [ctypes.c_int, ctypes.c_void_p, + ctypes.c_int, ctypes.c_void_p, ctypes.c_int, ctypes.c_void_p] + + if self._hexversion >= 0x10100000 and not self._libreSSL: + self.EVP_MD_CTX_new = self._lib.EVP_MD_CTX_new + self.EVP_MD_CTX_new.restype = ctypes.c_void_p + self.EVP_MD_CTX_new.argtypes = [] + + self.EVP_MD_CTX_reset = self._lib.EVP_MD_CTX_reset + self.EVP_MD_CTX_reset.restype = None + self.EVP_MD_CTX_reset.argtypes = [ctypes.c_void_p] + + self.EVP_MD_CTX_free = self._lib.EVP_MD_CTX_free + self.EVP_MD_CTX_free.restype = None + self.EVP_MD_CTX_free.argtypes = [ctypes.c_void_p] + + self.EVP_sha1 = self._lib.EVP_sha1 + self.EVP_sha1.restype = ctypes.c_void_p + self.EVP_sha1.argtypes = [] + + self.digest_ecdsa_sha1 = self.EVP_sha1 + else: + self.EVP_MD_CTX_create = self._lib.EVP_MD_CTX_create + self.EVP_MD_CTX_create.restype = ctypes.c_void_p + self.EVP_MD_CTX_create.argtypes = [] + + self.EVP_MD_CTX_init = self._lib.EVP_MD_CTX_init + self.EVP_MD_CTX_init.restype = None + self.EVP_MD_CTX_init.argtypes = [ctypes.c_void_p] + + self.EVP_MD_CTX_destroy = self._lib.EVP_MD_CTX_destroy + self.EVP_MD_CTX_destroy.restype = None + self.EVP_MD_CTX_destroy.argtypes = [ctypes.c_void_p] + + self.EVP_ecdsa = self._lib.EVP_ecdsa + self._lib.EVP_ecdsa.restype = ctypes.c_void_p + self._lib.EVP_ecdsa.argtypes = [] + + self.digest_ecdsa_sha1 = self.EVP_ecdsa + + self.RAND_bytes = self._lib.RAND_bytes + self.RAND_bytes.restype = ctypes.c_int + self.RAND_bytes.argtypes = [ctypes.c_void_p, ctypes.c_int] + + self.EVP_sha256 = self._lib.EVP_sha256 + self.EVP_sha256.restype = ctypes.c_void_p + self.EVP_sha256.argtypes = [] + + self.i2o_ECPublicKey = self._lib.i2o_ECPublicKey + self.i2o_ECPublicKey.restype = ctypes.c_int + self.i2o_ECPublicKey.argtypes = [ctypes.c_void_p, ctypes.c_void_p] + + self.EVP_sha512 = self._lib.EVP_sha512 + self.EVP_sha512.restype = ctypes.c_void_p + self.EVP_sha512.argtypes = [] + + self.HMAC = self._lib.HMAC + self.HMAC.restype = ctypes.c_void_p + self.HMAC.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_int, + ctypes.c_void_p, ctypes.c_int, ctypes.c_void_p, ctypes.c_void_p] + + try: + self.PKCS5_PBKDF2_HMAC = self._lib.PKCS5_PBKDF2_HMAC + except: + # The above is not compatible with all versions of OSX. + self.PKCS5_PBKDF2_HMAC = self._lib.PKCS5_PBKDF2_HMAC_SHA1 + + self.PKCS5_PBKDF2_HMAC.restype = ctypes.c_int + self.PKCS5_PBKDF2_HMAC.argtypes = [ctypes.c_void_p, ctypes.c_int, + ctypes.c_void_p, ctypes.c_int, + ctypes.c_int, ctypes.c_void_p, + ctypes.c_int, ctypes.c_void_p] + + self._set_ciphers() + self._set_curves() + + def _set_ciphers(self): + self.cipher_algo = { + 'aes-128-cbc': CipherName('aes-128-cbc', self.EVP_aes_128_cbc, 16), + 'aes-256-cbc': CipherName('aes-256-cbc', self.EVP_aes_256_cbc, 16), + 'aes-128-cfb': CipherName('aes-128-cfb', self.EVP_aes_128_cfb128, 16), + 'aes-256-cfb': CipherName('aes-256-cfb', self.EVP_aes_256_cfb128, 16), + 'aes-128-ofb': CipherName('aes-128-ofb', self._lib.EVP_aes_128_ofb, 16), + 'aes-256-ofb': CipherName('aes-256-ofb', self._lib.EVP_aes_256_ofb, 16), + #'aes-128-ctr': CipherName('aes-128-ctr', self._lib.EVP_aes_128_ctr, 16), + #'aes-256-ctr': CipherName('aes-256-ctr', self._lib.EVP_aes_256_ctr, 16), + 'bf-cfb': CipherName('bf-cfb', self.EVP_bf_cfb64, 8), + 'bf-cbc': CipherName('bf-cbc', self.EVP_bf_cbc, 8), + 'rc4': CipherName('rc4', self.EVP_rc4, 128), # 128 is the initialisation size not block size + } + + def _set_curves(self): + self.curves = { + 'secp112r1': 704, + 'secp112r2': 705, + 'secp128r1': 706, + 'secp128r2': 707, + 'secp160k1': 708, + 'secp160r1': 709, + 'secp160r2': 710, + 'secp192k1': 711, + 'secp224k1': 712, + 'secp224r1': 713, + 'secp256k1': 714, + 'secp384r1': 715, + 'secp521r1': 716, + 'sect113r1': 717, + 'sect113r2': 718, + 'sect131r1': 719, + 'sect131r2': 720, + 'sect163k1': 721, + 'sect163r1': 722, + 'sect163r2': 723, + 'sect193r1': 724, + 'sect193r2': 725, + 'sect233k1': 726, + 'sect233r1': 727, + 'sect239k1': 728, + 'sect283k1': 729, + 'sect283r1': 730, + 'sect409k1': 731, + 'sect409r1': 732, + 'sect571k1': 733, + 'sect571r1': 734, + } + + def BN_num_bytes(self, x): + """ + returns the length of a BN (OpenSSl API) + """ + return int((self.BN_num_bits(x) + 7) / 8) + + def get_cipher(self, name): + """ + returns the OpenSSL cipher instance + """ + if name not in self.cipher_algo: + raise Exception("Unknown cipher") + return self.cipher_algo[name] + + def get_curve(self, name): + """ + returns the id of a elliptic curve + """ + if name not in self.curves: + raise Exception("Unknown curve") + return self.curves[name] + + 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 + +def loadOpenSSL(): + global OpenSSL + from os import path, environ + from ctypes.util import find_library + + libdir = [] + if getattr(sys,'frozen', None): + if 'darwin' in sys.platform: + libdir.extend([ + path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.dylib'), + path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.1.1.0.dylib'), + path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.1.0.2.dylib'), + path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.1.0.1.dylib'), + path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.1.0.0.dylib'), + path.join(environ['RESOURCEPATH'], '..', 'Frameworks','libcrypto.0.9.8.dylib'), + ]) + elif 'win32' in sys.platform or 'win64' in sys.platform: + libdir.append(path.join(sys._MEIPASS, 'libeay32.dll')) + else: + libdir.extend([ + path.join(sys._MEIPASS, 'libcrypto.so'), + path.join(sys._MEIPASS, 'libssl.so'), + path.join(sys._MEIPASS, 'libcrypto.so.1.1.0'), + path.join(sys._MEIPASS, 'libssl.so.1.1.0'), + path.join(sys._MEIPASS, 'libcrypto.so.1.0.2'), + path.join(sys._MEIPASS, 'libssl.so.1.0.2'), + path.join(sys._MEIPASS, 'libcrypto.so.1.0.1'), + path.join(sys._MEIPASS, 'libssl.so.1.0.1'), + path.join(sys._MEIPASS, 'libcrypto.so.1.0.0'), + path.join(sys._MEIPASS, 'libssl.so.1.0.0'), + path.join(sys._MEIPASS, 'libcrypto.so.0.9.8'), + path.join(sys._MEIPASS, 'libssl.so.0.9.8'), + ]) + if 'darwin' in sys.platform: + libdir.extend(['libcrypto.dylib', '/usr/local/opt/openssl/lib/libcrypto.dylib']) + elif 'win32' in sys.platform or 'win64' in sys.platform: + libdir.append('libeay32.dll') + else: + libdir.append('libcrypto.so') + libdir.append('libssl.so') + libdir.append('libcrypto.so.1.0.0') + libdir.append('libssl.so.1.0.0') + if 'linux' in sys.platform or 'darwin' in sys.platform or 'bsd' in sys.platform: + libdir.append(find_library('ssl')) + elif 'win32' in sys.platform or 'win64' in sys.platform: + libdir.append(find_library('libeay32')) + for library in libdir: + try: + OpenSSL = _OpenSSL(library) + return + except: + pass + raise Exception("Failed to load OpenSSL library, searched for: " + " ".join(libdir)) + +loadOpenSSL() diff --git a/src/lib/pyelliptic/setup.py b/src/lib/pyelliptic/setup.py new file mode 100644 index 00000000..cc9c0a21 --- /dev/null +++ b/src/lib/pyelliptic/setup.py @@ -0,0 +1,23 @@ +from setuptools import setup, find_packages + +setup( + name="pyelliptic", + version='2.0.1', + url='https://github.com/radfish/pyelliptic', + license='GPL', + description="Python OpenSSL wrapper for ECC (ECDSA, ECIES), AES, HMAC, Blowfish, ...", + author='Yann GUIBET', + author_email='yannguibet@gmail.com', + maintainer="redfish", + maintainer_email='redfish@galactica.pw', + packages=find_packages(), + classifiers=[ + 'Operating System :: Unix', + 'Operating System :: Microsoft :: Windows', + 'Environment :: MacOS X', + 'Programming Language :: Python', + 'Programming Language :: Python :: 2.7', + 'Programming Language :: Python :: 3.7', + 'Topic :: Security :: Cryptography', + ], +)