{"id":960,"hash":"3e56deb69a2a3473236776b79460a732489e3db877fba62d0e948b2bb4d15cbf","pattern":"What does "SSLError: [SSL] PEM lib (_ssl.c:2532)" mean using the Python ssl library?","full_message":"I am trying to use connect to another party using Python 3 asyncio module and get this error:\n\n     36     sslcontext = ssl.SSLContext(ssl.PROTOCOL_TLSv1)\n---> 37     sslcontext.load_cert_chain(cert, keyfile=ca_cert)\n     38\n\nSSLError: [SSL] PEM lib (_ssl.c:2532)\n\nThe question is just what the error mean. My certificate is correct, the keyfile (CA certificate) might not.","ecosystem":"pypi","package_name":"python-3.x","package_version":null,"solution":"Assuming that version 3.6 is being used:\n\nSee: https://github.com/python/cpython/blob/3.6/Modules/_ssl.c#L3523-L3534\n\n PySSL_BEGIN_ALLOW_THREADS_S(pw_info.thread_state);\n r = SSL_CTX_check_private_key(self->ctx);\n PySSL_END_ALLOW_THREADS_S(pw_info.thread_state);\n if (r != 1) { \n    _setSSLError(NULL, 0, __FILE__, __LINE__);\n    goto error;\n }\n\nWhat it is saying is that SSL_CTX_check_private_key failed; thus, the private key is not correct.\n\nReference to the likely version:\n\nhttps://github.com/python/cpython/blob/3.4/Modules/_ssl.c#L2529-L2535","confidence":0.95,"source":"stackoverflow","source_url":"https://stackoverflow.com/questions/30109449/what-does-sslerror-ssl-pem-lib-ssl-c2532-mean-using-the-python-ssl-libr","votes":76,"created_at":"2026-04-19T04:52:05.810339+00:00","updated_at":"2026-04-19T04:52:05.810339+00:00"}