olm/python/olm/_base.py

import os.path

from ctypes import *

def read_random(n):
    with open("/dev/urandom", "rb") as f:
        return f.read(n)

lib = cdll.LoadLibrary(os.path.join(
    os.path.dirname(__file__), "..", "..", "build", "libolm.so.1")
)

lib.olm_error.argtypes = []
lib.olm_error.restypes = c_size_t

ERR = lib.olm_error()

class OlmError(Exception):
    pass
Refactor python wrappers Split the python wrappers into separate modules 2016-05-10 10:14:29 +02:00			`import os.path`

			`from ctypes import *`

			`def read_random(n):`
			`with open("/dev/urandom", "rb") as f:`
			`return f.read(n)`

			`lib = cdll.LoadLibrary(os.path.join(`
Fix Ed25519 keypair generation Ed25519 private keys, it turns out, have 64 bytes, not 32. We were previously generating only 32 bytes (which is all that is required to generate the public key), and then using the public key as the upper 32 bytes when generating the per-message session key. This meant that everything appeared to work, but the security of the private key was severely compromised. By way of fixes: * Use the correct algorithm for generating the Ed25519 private key, and store all 512 bits of it. * Update the account pickle format and refuse to load the old format (since we should consider it compromised). * Bump the library version, and add a function to retrieve the library version, so that applications can verify that they are linked against a fixed version of the library. * Remove the curve25519_{sign, verify} functions which were unused and of dubious quality. 2016-09-01 14:35:23 +02:00			`os.path.dirname(__file__), "..", "..", "build", "libolm.so.1")`
Refactor python wrappers Split the python wrappers into separate modules 2016-05-10 10:14:29 +02:00			`)`

			`lib.olm_error.argtypes = []`
			`lib.olm_error.restypes = c_size_t`

			`ERR = lib.olm_error()`

			`class OlmError(Exception):`
			`pass`