* **SECURITY ISSUE:** Fixed a bug where certain sequences of ``update()`` calls
when symmetrically encrypting very large payloads (>2GB) could result in an
integer overflow, leading to buffer overflows. *CVE-2020-36242* **Update:**
This fix is a workaround for *CVE-2021-23840* in OpenSSL, fixed in OpenSSL
1.1.1j.
.. _v3-3-1:
3.3.1 - 2020-12-09
Re-added a legacy symbol causing problems for older pyOpenSSL users.
.. _v3-3:
3.3 - 2020-12-08
* **BACKWARDS INCOMPATIBLE:** Support for Python 3.5 has been removed due to
low usage and maintenance burden.
* **BACKWARDS INCOMPATIBLE:** The
:class:`~cryptography.hazmat.primitives.ciphers.modes.GCM` and
:class:`~cryptography.hazmat.primitives.ciphers.aead.AESGCM` now require
64-bit to 1024-bit (8 byte to 128 byte) initialization vectors. This change
is to conform with an upcoming OpenSSL release that will no longer support
sizes outside this window.
* **BACKWARDS INCOMPATIBLE:** When deserializing asymmetric keys we now
raise ``ValueError`` rather than ``UnsupportedAlgorithm`` when an
unsupported cipher is used. This change is to conform with an upcoming
OpenSSL release that will no longer distinguish between error types.
* **BACKWARDS INCOMPATIBLE:** We no longer allow loading of finite field
Diffie-Hellman parameters of less than 512 bits in length. This change is to
conform with an upcoming OpenSSL release that no longer supports smaller
sizes. These keys were already wildly insecure and should not have been used
in any application outside of testing.
* Updated Windows, macOS, and ``manylinux`` wheels to be compiled with
OpenSSL 1.1.1i.
* Python 2 support is deprecated in ``cryptography``. This is the last release
that will support Python 2.
* Added the
:meth:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey.recover_data_from_signature`
function to
:class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey`
for recovering the signed data from an RSA signature.
.. _v3-2-1:
Commits
82b6ce2 correct buffer overflows cause by integer overflow in openssl (#5747)
1ff0d50 re-add Cryptography_HAS_TLSEXT_HOSTNAME and bump for 3.3.1 (#5625)
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Bumps cryptography from 3.2.1 to 3.3.2.
Changelog
Sourced from cryptography's changelog.
Commits
82b6ce2
correct buffer overflows cause by integer overflow in openssl (#5747)1ff0d50
re-add Cryptography_HAS_TLSEXT_HOSTNAME and bump for 3.3.1 (#5625)7e8fff7
Prepare for 3.3 release (#5603)b5278c9
Fixed DH tests for latest CentOS FIPS OpenSSL (#5604)6693d55
Add support for RSA signature recovery (#5573)8686d52
Document that PKCS1v1.5 is not constant time (#5600)1be144a
bump cffi minimum version to help out pyopenssl (#5598)96f2d96
remove legacy debugging code from setup.py (#5597)2660f93
Document that Firefox doesn't support unencrypted pkcs12 (#5596)a209669
Added tls bindings for new OpenSSL APIs (#5595)Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase
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