Python decode_public_key Examples

Example #1

File: genCheque.py Project: arctarus44/e-cheque

def check_invoice(signed_invoice):
	"""Check if the configparser instance is a signed invoice. If not exit."""

	seller_sign_key = os.path.join(os.path.join(tools.DIR_SELLER,
												tools.FILE_PUB_SIGN))
	bank_pukf = os.path.join(tools.DIR_BANK, tools.FILE_PUB_KEY)

	pub_cp = tools.decode_public_key(seller_sign_key, bank_pukf,
									 tools.ROLE_BANK)

	tools.check_config(pub_cp, tools.STRCT_PUB_KEY)

	pub_k = RSA(int(pub_cp[tools.SCT_K_KEY][tools.OPT_K_N]),
				e=int(pub_cp[tools.SCT_K_KEY][tools.OPT_K_E]))

	check = pub_k.check_signature(signed_invoice[tools.ROLE_SELLER][tools.OPT_S_SIGN])

	tmp = open(tools.TMP_FILE, 'w')
	tmp.write(check)
	tmp.close()

	invoice_cp = ConfigParser()
	invoice_cp.read(tools.TMP_FILE)
	os.remove(tools.TMP_FILE)
	tools.check_config(invoice_cp, tools.STRCT_INVOICE)
	return invoice_cp

Example #2

File: deposit.py Project: arctarus44/e-cheque

	if database.has_option(drawee, transac_id):
		return True
	else:
		return False


if __name__ == "__main__":

	bank_prk_fname = os.path.join(tools.DIR_BANK, tools.FILE_PUB_KEY)

	seller_puk_sing_fname = os.path.join(tools.DIR_BANK,
										 tools.DIR_SELLER,
										 tools.FILE_PUB_SIGN)

	seller_puk = tools.decode_public_key(seller_puk_sing_fname,
										 bank_prk_fname,
										 tools.ROLE_BANK)

	seller_puk = RSA(int(seller_puk[tools.SCT_K_KEY][tools.OPT_K_N]),
					 e=int(seller_puk[tools.SCT_K_KEY][tools.OPT_K_E]))

	# Read the seller's signature from stdin and retreive the cheque's
	# signature generated by the drawee
	try:
		seller_sign = tools.read_stdin()
	except ParsingError:
		print(tools.SELLER_SIGN_ERROR, file=sys.stderr)
		exit(1)

	drawee_sign = decode_sign(seller_sign[tools.ROLE_SELLER][tools.OPT_S_SIGN],
							  seller_puk)