Allow using additional untrusted certificates for chain building in X509StoreContext #948
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…509StoreContext The additional certificates provided in the new `chain` parameter will be untrusted but may be used to build the chain. This makes it easier to validate a certificate against a store which contains only root ca certificates, and the intermediates come from e.g. the same untrusted source as the certificate to be verified.
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reaperhulk
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Thanks for the quick merge! |
netbsd-srcmastr
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Changes: 20.0.1 (2020-12-15) ------------------- Backward-incompatible changes: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Deprecations: ^^^^^^^^^^^^^ Changes: ^^^^^^^^ - Fixed compatibility with OpenSSL 1.1.0. 20.0.0 (2020-11-27) ------------------- Backward-incompatible changes: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - The minimum ``cryptography`` version is now 3.2. - Remove deprecated ``OpenSSL.tsafe`` module. - Removed deprecated ``OpenSSL.SSL.Context.set_npn_advertise_callback``, ``OpenSSL.SSL.Context.set_npn_select_callback``, and ``OpenSSL.SSL.Connection.get_next_proto_negotiated``. - Drop support for Python 3.4 - Drop support for OpenSSL 1.0.1 and 1.0.2 Deprecations: ^^^^^^^^^^^^^ - Deprecated ``OpenSSL.crypto.loads_pkcs7`` and ``OpenSSL.crypto.loads_pkcs12``. Changes: ^^^^^^^^ - Added a new optional ``chain`` parameter to ``OpenSSL.crypto.X509StoreContext()`` where additional untrusted certificates can be specified to help chain building. `#948 </~https://github.com/pyca/pyopenssl/pull/948>`_ - Added ``OpenSSL.crypto.X509Store.load_locations`` to set trusted certificate file bundles and/or directories for verification. `#943 </~https://github.com/pyca/pyopenssl/pull/943>`_ - Added ``Context.set_keylog_callback`` to log key material. `#910 </~https://github.com/pyca/pyopenssl/pull/910>`_ - Added ``OpenSSL.SSL.Connection.get_verified_chain`` to retrieve the verified certificate chain of the peer. `#894 </~https://github.com/pyca/pyopenssl/pull/894>`_. - Make verification callback optional in ``Context.set_verify``. If omitted, OpenSSL's default verification is used. `#933 </~https://github.com/pyca/pyopenssl/pull/933>`_ - Fixed a bug that could truncate or cause a zero-length key error due to a null byte in private key passphrase in ``OpenSSL.crypto.load_privatekey`` and ``OpenSSL.crypto.dump_privatekey``. `#947 </~https://github.com/pyca/pyopenssl/pull/947>`_
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The additional certificates provided in the new
chainparameter will beuntrusted but may be used to build the chain.
This makes it easier to validate a certificate against a store which
contains only root ca certificates, and the intermediates come from e.g.
the same untrusted source as the certificate to be verified.
This PR is based on the work done by @akgood for PR #473.