Python int_from_bytesの例

コード例 #1

ファイル: dhcrypto.py プロジェクト: AlessandroZ/pupy

	def __init__(self):
		self.object_path = None
		self.server_public_key = None
		self.aes_key = None
		self.encrypted = True
		# 128-bytes-long strong random number
		self.my_private_key = int_from_bytes(os.urandom(0x80), 'big')
		self.my_public_key = pow(2, self.my_private_key, DH_PRIME_1024)

コード例 #2

 def __init__(self):
     self.object_path = None
     self.server_public_key = None
     self.aes_key = None
     self.encrypted = True
     # 128-bytes-long strong random number
     self.my_private_key = int_from_bytes(os.urandom(0x80), 'big')
     self.my_public_key = pow(2, self.my_private_key, DH_PRIME_1024)

コード例 #3

ファイル: dhcrypto.py プロジェクト: AlessandroZ/pupy

from hashlib import sha256
from secretstorage.util import int_from_bytes, int_to_bytes

# A standard 1024 bits (128 bytes) prime number for use in Diffie-Hellman exchange
DH_PRIME_1024_BYTES = (
	0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2, 0x21, 0x68, 0xC2, 0x34,
	0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1, 0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74,
	0x02, 0x0B, 0xBE, 0xA6, 0x3B, 0x13, 0x9B, 0x22, 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
	0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B, 0x30, 0x2B, 0x0A, 0x6D, 0xF2, 0x5F, 0x14, 0x37,
	0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45, 0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6,
	0xF4, 0x4C, 0x42, 0xE9, 0xA6, 0x37, 0xED, 0x6B, 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
	0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5, 0xAE, 0x9F, 0x24, 0x11, 0x7C, 0x4B, 0x1F, 0xE6,
	0x49, 0x28, 0x66, 0x51, 0xEC, 0xE6, 0x53, 0x81, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
)

DH_PRIME_1024 = int_from_bytes(bytearray(DH_PRIME_1024_BYTES), 'big')

class Session(object):
	def __init__(self):
		self.object_path = None
		self.server_public_key = None
		self.aes_key = None
		self.encrypted = True
		# 128-bytes-long strong random number
		self.my_private_key = int_from_bytes(os.urandom(0x80), 'big')
		self.my_public_key = pow(2, self.my_private_key, DH_PRIME_1024)

	def set_server_public_key(self, server_public_key):
		common_secret = pow(server_public_key, self.my_private_key,
			DH_PRIME_1024)
		common_secret = int_to_bytes(common_secret)

コード例 #4

# A standard 1024 bits (128 bytes) prime number for use in Diffie-Hellman exchange
DH_PRIME_1024_BYTES = (
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2,
    0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
    0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74, 0x02, 0x0B, 0xBE, 0xA6,
    0x3B, 0x13, 0x9B, 0x22, 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
    0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B, 0x30, 0x2B, 0x0A, 0x6D,
    0xF2, 0x5F, 0x14, 0x37, 0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45,
    0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6, 0xF4, 0x4C, 0x42, 0xE9,
    0xA6, 0x37, 0xED, 0x6B, 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
    0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5, 0xAE, 0x9F, 0x24, 0x11,
    0x7C, 0x4B, 0x1F, 0xE6, 0x49, 0x28, 0x66, 0x51, 0xEC, 0xE6, 0x53, 0x81,
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF)

DH_PRIME_1024 = int_from_bytes(bytearray(DH_PRIME_1024_BYTES), 'big')


class Session(object):
    def __init__(self):
        self.object_path = None
        self.server_public_key = None
        self.aes_key = None
        self.encrypted = True
        # 128-bytes-long strong random number
        self.my_private_key = int_from_bytes(os.urandom(0x80), 'big')
        self.my_public_key = pow(2, self.my_private_key, DH_PRIME_1024)

    def set_server_public_key(self, server_public_key):
        common_secret = pow(server_public_key, self.my_private_key,
                            DH_PRIME_1024)