[Bug 1618765] Re: TypeError: cannot instantiate ctype 'EVP_MD_CTX' of unknown size

[James Page]

Unit test in pyopenssl fails as well:

pkey = <OpenSSL.crypto.PKey object at 0x7f572536b940>
data = b'It was a bright cold day in April, and the clocks were striking thirteen. Winston Smith, his chin nuzzled into his b...s doors of Victory Mansions, though not quickly enough to prevent a swirl of gritty dust from entering along with him.'
digest = 'sha1'

    def sign(pkey, data, digest):
        """
        Sign data with a digest
    
        :param pkey: Pkey to sign with
        :param data: data to be signed
        :param digest: message digest to use
        :return: signature
        """
        data = _text_to_bytes_and_warn("data", data)
    
        digest_obj = _lib.EVP_get_digestbyname(_byte_string(digest))
        if digest_obj == _ffi.NULL:
            raise ValueError("No such digest method")
    
>       md_ctx = _ffi.new("EVP_MD_CTX*")
E       TypeError: cannot instantiate ctype 'EVP_MD_CTX' of unknown size

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to pyopenssl in Ubuntu.
https://bugs.launchpad.net/bugs/1618765

Title:
  TypeError: cannot instantiate ctype 'EVP_MD_CTX' of unknown size

Status in pyopenssl package in Ubuntu:
  New
Status in python-cryptography package in Ubuntu:
  New

Bug description:
  The new 1.5 update of python-cryptography in yakkety-proposed is
  causing some test failures in various OpenStack packages that use
  crypto - example:

  ==============================
  Failed 1 tests - output below:
  ==============================

  glance.tests.unit.common.test_utils.TestUtils.test_validate_key_cert_key
  ------------------------------------------------------------------------

  Captured traceback:
  ~~~~~~~~~~~~~~~~~~~
      Traceback (most recent call last):
        File "glance/tests/unit/common/test_utils.py", line 276, in test_validate_key_cert_key
          utils.validate_key_cert(keyfile, certfile)
        File "glance/common/utils.py", line 433, in validate_key_cert
          out = crypto.sign(key, data, digest)
        File "/usr/lib/python2.7/dist-packages/OpenSSL/crypto.py", line 2563, in sign
          md_ctx = _ffi.new("EVP_MD_CTX*")
      TypeError: cannot instantiate ctype 'EVP_MD_CTX' of unknown size

  Tests passed fine with 1.4.x.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/pyopenssl/+bug/1618765/+subscriptions