# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
from Crypto.Random import random
from binascii import hexlify, unhexlify
import time
import json
from ecpy.curves import curve_secp256k1
from ecpy.point import Point, Generator
from ecpy.ecdsa import ECDSA
_def_curve = curve_secp256k1
Point.set_curve(_def_curve)
ECDSA.set_curve(_def_curve)
ECDSA.set_generator(Generator.init(_def_curve['G'][0], _def_curve['G'][1]))
class NAK(object):
n = _def_curve['n']
G = Generator.init(_def_curve['G'][0], _def_curve['G'][1])
ecdsa = ECDSA()
def __init__(self, expire=None, pubkey=None, signature=None, privkey=None):
self.expire = expire
self.pubkey = pubkey
self.signature = signature
self.privkey = privkey
if privkey is not None and pubkey is None:
self.pubkey = NAK.G * privkey
if self.pubkey is not None:
from ecpy.ecdsa import ECDSA # version = 1.00 in fixed point _msg_api_ver_v1 = b'M0100' _msg_api_ver_v2 = b'M\x02\x00\x00' _C = curve_secp256k1 # _C = curve_secp384r1 # _C = curve_secp112r1 # _C = curve_bauer9 _masksize = min(32, _C['bits']) _maskbits = (int((_masksize / 3) + 0)) _G = Generator.init(_C['G'][0], _C['G'][1]) ECDSA.set_curve(_C) ECDSA.set_generator(_G) _ecdsa = ECDSA() # convert integer to hex string _pfmt = '%%0%dx' % (((_C['bits'] + 7) >> 3) << 1) _mfmt = '%%0%dx' % (((_masksize + 7) >> 3) << 1) # 256 bit message seed _s_bytes = 32 # 64 bit plaintext length field _l_bytes = 8 _lfmt = '%016x' _header_size_v1 = (5+1+8+1+8+1+66+1+66+1+66)
import ecpy.curves as curves
from ecpy.ecdsa import ECDSA
from Crypto.Random import random
from Crypto.Cipher import AES
from Crypto.Util import Counter
import hashlib
import binascii
import base64
#_curve = curves.curve_secp112r1
_curve = curves.curve_secp256k1
#_curve = curves.curve_secp384r1
Point.set_curve(_curve)
_G = Generator.init(_curve['G'][0], _curve['G'][1])
ECDSA.set_curve(_curve)
ECDSA.set_generator(_G)
ecdsa = ECDSA()
recdsa = ECDSA()
friends = ['Alice', 'Bob', 'Carl', 'Donna', 'Eve']
data = []
for f in friends:
datum = {}
datum['name'] = f
p = random.randint(1,_curve['n']-1)
P = p * _G
datum['privkey'] = p
datum['pubkey'] = P