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Changelog
=========

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.. _v2-6-1:

2.6.1 - 2019-02-27
~~~~~~~~~~~~~~~~~~

* Resolved an error in our build infrastructure that broke our Python3 wheels
  for macOS and Linux.

.. _v2-6:

2.6 - 2019-02-27
~~~~~~~~~~~~~~~~

* **BACKWARDS INCOMPATIBLE:** Removed
  ``cryptography.hazmat.primitives.asymmetric.utils.encode_rfc6979_signature``
  and
  ``cryptography.hazmat.primitives.asymmetric.utils.decode_rfc6979_signature``,
  which had been deprecated for nearly 4 years. Use
  :func:`~cryptography.hazmat.primitives.asymmetric.utils.encode_dss_signature`
  and
  :func:`~cryptography.hazmat.primitives.asymmetric.utils.decode_dss_signature`
  instead.
* **BACKWARDS INCOMPATIBLE**: Removed ``cryptography.x509.Certificate.serial``,
  which had been deprecated for nearly 3 years. Use
  :attr:`~cryptography.x509.Certificate.serial_number` instead.
* Updated Windows, macOS, and ``manylinux1`` wheels to be compiled with
  OpenSSL 1.1.1b.
* Added support for :doc:`/hazmat/primitives/asymmetric/ed448` when using
  OpenSSL 1.1.1b or newer.
* Added support for :doc:`/hazmat/primitives/asymmetric/ed25519` when using
  OpenSSL 1.1.1b or newer.
* :func:`~cryptography.hazmat.primitives.serialization.load_ssh_public_key` can
  now load ``ed25519`` public keys.
* Add support for easily mapping an object identifier to its elliptic curve
  class via
  :func:`~cryptography.hazmat.primitives.asymmetric.ec.get_curve_for_oid`.
* Add support for OpenSSL when compiled with the ``no-engine``
  (``OPENSSL_NO_ENGINE``) flag.

.. _v2-5:

2.5 - 2019-01-22
~~~~~~~~~~~~~~~~

* **BACKWARDS INCOMPATIBLE:** :term:`U-label` strings were deprecated in
  version 2.1, but this version removes the default ``idna`` dependency as
  well. If you still need this deprecated path please install cryptography
  with the ``idna`` extra: ``pip install cryptography[idna]``.
* **BACKWARDS INCOMPATIBLE:** The minimum supported PyPy version is now 5.4.
* Numerous classes and functions have been updated to allow :term:`bytes-like`
  types for keying material and passwords, including symmetric algorithms, AEAD
  ciphers, KDFs, loading asymmetric keys, and one time password classes.
* Updated Windows, macOS, and ``manylinux1`` wheels to be compiled with
  OpenSSL 1.1.1a.
* Added support for :class:`~cryptography.hazmat.primitives.hashes.SHA512_224`
  and :class:`~cryptography.hazmat.primitives.hashes.SHA512_256` when using
  OpenSSL 1.1.1.
* Added support for :class:`~cryptography.hazmat.primitives.hashes.SHA3_224`,
  :class:`~cryptography.hazmat.primitives.hashes.SHA3_256`,
  :class:`~cryptography.hazmat.primitives.hashes.SHA3_384`, and
  :class:`~cryptography.hazmat.primitives.hashes.SHA3_512` when using OpenSSL
  1.1.1.
* Added support for :doc:`/hazmat/primitives/asymmetric/x448` when using
  OpenSSL 1.1.1.
* Added support for :class:`~cryptography.hazmat.primitives.hashes.SHAKE128`
  and :class:`~cryptography.hazmat.primitives.hashes.SHAKE256` when using
  OpenSSL 1.1.1.
* Added initial support for parsing PKCS12 files with
  :func:`~cryptography.hazmat.primitives.serialization.pkcs12.load_key_and_certificates`.
* Added support for :class:`~cryptography.x509.IssuingDistributionPoint`.
* Added ``rfc4514_string()`` method to
  :meth:`x509.Name <cryptography.x509.Name.rfc4514_string>`,
  :meth:`x509.RelativeDistinguishedName
  <cryptography.x509.RelativeDistinguishedName.rfc4514_string>`, and
  :meth:`x509.NameAttribute <cryptography.x509.NameAttribute.rfc4514_string>`
  to format the name or component an :rfc:`4514` Distinguished Name string.
* Added
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.from_encoded_point`,
  which immediately checks if the point is on the curve and supports compressed
  points. Deprecated the previous method
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers.from_encoded_point`.
* Added :attr:`~cryptography.x509.ocsp.OCSPResponse.signature_hash_algorithm`
  to ``OCSPResponse``.
* Updated :doc:`/hazmat/primitives/asymmetric/x25519` support to allow
  additional serialization methods. Calling
  :meth:`~cryptography.hazmat.primitives.asymmetric.x25519.X25519PublicKey.public_bytes`
  with no arguments has been deprecated.
* Added support for encoding compressed and uncompressed points via
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.public_bytes`. Deprecated the previous method
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers.encode_point`.


.. _v2-4-2:

2.4.2 - 2018-11-21
~~~~~~~~~~~~~~~~~~

* Updated Windows, macOS, and ``manylinux1`` wheels to be compiled with
  OpenSSL 1.1.0j.

.. _v2-4-1:

2.4.1 - 2018-11-11
~~~~~~~~~~~~~~~~~~

* Fixed a build breakage in our ``manylinux1`` wheels.

.. _v2-4:

2.4 - 2018-11-11
~~~~~~~~~~~~~~~~

* **BACKWARDS INCOMPATIBLE:** Dropped support for LibreSSL 2.4.x.
* Deprecated OpenSSL 1.0.1 support. OpenSSL 1.0.1 is no longer supported by
  the OpenSSL project. At this time there is no time table for dropping
  support, however we strongly encourage all users to upgrade or install
  ``cryptography`` from a wheel.
* Added initial :doc:`OCSP </x509/ocsp>` support.
* Added support for :class:`~cryptography.x509.PrecertPoison`.

.. _v2-3-1:

2.3.1 - 2018-08-14
~~~~~~~~~~~~~~~~~~

* Updated Windows, macOS, and ``manylinux1`` wheels to be compiled with
  OpenSSL 1.1.0i.

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.. _v2-3:

2.3 - 2018-07-18
~~~~~~~~~~~~~~~~

* **SECURITY ISSUE:**
  :meth:`~cryptography.hazmat.primitives.ciphers.AEADDecryptionContext.finalize_with_tag`
  allowed tag truncation by default which can allow tag forgery in some cases.
  The method now enforces the ``min_tag_length`` provided to the
  :class:`~cryptography.hazmat.primitives.ciphers.modes.GCM` constructor.
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  *CVE-2018-10903*
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* Added support for Python 3.7.
* Added :meth:`~cryptography.fernet.Fernet.extract_timestamp` to get the
  authenticated timestamp of a :doc:`Fernet </fernet>` token.
* Support for Python 2.7.x without ``hmac.compare_digest`` has been deprecated.
  We will require Python 2.7.7 or higher (or 2.7.6 on Ubuntu) in the next
  ``cryptography`` release.
* Fixed multiple issues preventing ``cryptography`` from compiling against
  LibreSSL 2.7.x.
* Added
  :class:`~cryptography.x509.CertificateRevocationList.get_revoked_certificate_by_serial_number`
  for quick serial number searches in CRLs.
* The :class:`~cryptography.x509.RelativeDistinguishedName` class now
  preserves the order of attributes. Duplicate attributes now raise an error
  instead of silently discarding duplicates.
* :func:`~cryptography.hazmat.primitives.keywrap.aes_key_unwrap` and
  :func:`~cryptography.hazmat.primitives.keywrap.aes_key_unwrap_with_padding`
  now raise :class:`~cryptography.hazmat.primitives.keywrap.InvalidUnwrap` if
  the wrapped key is an invalid length, instead of ``ValueError``.

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.. _v2-2-2:

2.2.2 - 2018-03-27
~~~~~~~~~~~~~~~~~~

* Updated Windows, macOS, and ``manylinux1`` wheels to be compiled with
  OpenSSL 1.1.0h.

.. _v2-2-1:

2.2.1 - 2018-03-20
~~~~~~~~~~~~~~~~~~

* Reverted a change to ``GeneralNames`` which prohibited having zero elements,
  due to breakages.
* Fixed a bug in
  :func:`~cryptography.hazmat.primitives.keywrap.aes_key_unwrap_with_padding`
  that caused it to raise ``InvalidUnwrap`` when key length modulo 8 was
  zero.

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.. _v2-2:

2.2 - 2018-03-19
~~~~~~~~~~~~~~~~

* **BACKWARDS INCOMPATIBLE:** Support for Python 2.6 has been dropped.
* Resolved a bug in ``HKDF`` that incorrectly constrained output size.
* Added :class:`~cryptography.hazmat.primitives.asymmetric.ec.BrainpoolP256R1`,
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.BrainpoolP384R1`, and
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.BrainpoolP512R1` to
  support inter-operating with systems like German smart meters.
* Added token rotation support to :doc:`Fernet </fernet>` with
  :meth:`~cryptography.fernet.MultiFernet.rotate`.
* Fixed a memory leak in
  :func:`~cryptography.hazmat.primitives.asymmetric.ec.derive_private_key`.
* Added support for AES key wrapping with padding via
  :func:`~cryptography.hazmat.primitives.keywrap.aes_key_wrap_with_padding`
  and
  :func:`~cryptography.hazmat.primitives.keywrap.aes_key_unwrap_with_padding`
  .
* Allow loading DSA keys with 224 bit ``q``.
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.. _v2-1-4:

2.1.4 - 2017-11-29
~~~~~~~~~~~~~~~~~~

* Added ``X509_up_ref`` for an upcoming ``pyOpenSSL`` release.

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.. _v2-1-3:

2.1.3 - 2017-11-02
~~~~~~~~~~~~~~~~~~

* Updated Windows, macOS, and ``manylinux1`` wheels to be compiled with
  OpenSSL 1.1.0g.

.. _v2-1-2:

2.1.2 - 2017-10-24
~~~~~~~~~~~~~~~~~~

* Corrected a bug with the ``manylinux1`` wheels where OpenSSL's stack was
  marked executable.

.. _v2-1-1:

2.1.1 - 2017-10-12
~~~~~~~~~~~~~~~~~~

* Fixed support for install with the system ``pip`` on Ubuntu 16.04.

.. _v2-1:

2.1 - 2017-10-11
~~~~~~~~~~~~~~~~

* **FINAL DEPRECATION** Python 2.6 support is deprecated, and will be removed
  in the next release of ``cryptography``.
* **BACKWARDS INCOMPATIBLE:** ``Whirlpool``, ``RIPEMD160``, and
  ``UnsupportedExtension`` have been removed in accordance with our
  :doc:`/api-stability` policy.
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* **BACKWARDS INCOMPATIBLE:**
  :attr:`DNSName.value <cryptography.x509.DNSName.value>`,
  :attr:`RFC822Name.value <cryptography.x509.RFC822Name.value>`, and
  :attr:`UniformResourceIdentifier.value
  <cryptography.x509.UniformResourceIdentifier.value>`
  will now return an :term:`A-label` string when parsing a certificate
  containing an internationalized domain name (IDN) or if the caller passed
  a :term:`U-label` to the constructor. See below for additional deprecations
  related to this change.
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* Installing ``cryptography`` now requires ``pip`` 6 or newer.
* Deprecated passing :term:`U-label` strings to the
  :class:`~cryptography.x509.DNSName`,
  :class:`~cryptography.x509.UniformResourceIdentifier`, and
  :class:`~cryptography.x509.RFC822Name` constructors. Instead, users should
  pass values as :term:`A-label` strings with ``idna`` encoding if necessary.
  This change will not affect anyone who is not processing internationalized
  domains.
* Added support for
  :class:`~cryptography.hazmat.primitives.ciphers.algorithms.ChaCha20`. In
  most cases users should choose
  :class:`~cryptography.hazmat.primitives.ciphers.aead.ChaCha20Poly1305`
  rather than using this unauthenticated form.
* Added :meth:`~cryptography.x509.CertificateRevocationList.is_signature_valid`
  to :class:`~cryptography.x509.CertificateRevocationList`.
* Support :class:`~cryptography.hazmat.primitives.hashes.BLAKE2b` and
  :class:`~cryptography.hazmat.primitives.hashes.BLAKE2s` with
  :class:`~cryptography.hazmat.primitives.hmac.HMAC`.
* Added support for
  :class:`~cryptography.hazmat.primitives.ciphers.modes.XTS` mode for
  AES.
* Added support for using labels with
  :class:`~cryptography.hazmat.primitives.asymmetric.padding.OAEP` when using
  OpenSSL 1.0.2 or greater.
* Improved compatibility with NSS when issuing certificates from an issuer
  that has a subject with non-``UTF8String`` string types.
* Add support for the :class:`~cryptography.x509.DeltaCRLIndicator` extension.
* Add support for the :class:`~cryptography.x509.TLSFeature`
  extension. This is commonly used for enabling ``OCSP Must-Staple`` in
  certificates.
* Add support for the :class:`~cryptography.x509.FreshestCRL` extension.

.. _v2-0-3:

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2.0.3 - 2017-08-03
~~~~~~~~~~~~~~~~~~

* Fixed an issue with weak linking symbols when compiling on macOS
  versions older than 10.12.

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.. _v2-0-2:

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2.0.2 - 2017-07-27
~~~~~~~~~~~~~~~~~~

* Marked all symbols as hidden in the ``manylinux1`` wheel to avoid a
  bug with symbol resolution in certain scenarios.

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.. _v2-0-1:

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2.0.1 - 2017-07-26
~~~~~~~~~~~~~~~~~~

* Fixed a compilation bug affecting OpenBSD.
* Altered the ``manylinux1`` wheels to statically link OpenSSL instead of
  dynamically linking and bundling the shared object. This should resolve
  crashes seen when using ``uwsgi`` or other binaries that link against
  OpenSSL independently.
* Fixed the stack level for the ``signer`` and ``verifier`` warnings.

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.. _v2-0:

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2.0 - 2017-07-17
~~~~~~~~~~~~~~~~

* **BACKWARDS INCOMPATIBLE:** Support for Python 3.3 has been dropped.
* We now ship ``manylinux1`` wheels linked against OpenSSL 1.1.0f. These wheels
  will be automatically used with most Linux distributions if you are running
  the latest pip.
* Deprecated the use of ``signer`` on
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`,
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`,
  and
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey`
  in favor of ``sign``.
* Deprecated the use of ``verifier`` on
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey`,
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey`,
  and
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey`
  in favor of ``verify``.
* Added support for parsing
  :class:`~cryptography.x509.certificate_transparency.SignedCertificateTimestamp`
  objects from X.509 certificate extensions.
* Added support for
  :class:`~cryptography.hazmat.primitives.ciphers.aead.ChaCha20Poly1305`.
* Added support for
  :class:`~cryptography.hazmat.primitives.ciphers.aead.AESCCM`.
* Added
  :class:`~cryptography.hazmat.primitives.ciphers.aead.AESGCM`, a "one shot"
  API for AES GCM encryption.
* Added support for :doc:`/hazmat/primitives/asymmetric/x25519`.
* Added support for serializing and deserializing Diffie-Hellman parameters
  with
  :func:`~cryptography.hazmat.primitives.serialization.load_pem_parameters`,
  :func:`~cryptography.hazmat.primitives.serialization.load_der_parameters`,
  and
  :meth:`~cryptography.hazmat.primitives.asymmetric.dh.DHParameters.parameter_bytes`
  .
* The ``extensions`` attribute on :class:`~cryptography.x509.Certificate`,
  :class:`~cryptography.x509.CertificateSigningRequest`,
  :class:`~cryptography.x509.CertificateRevocationList`, and
  :class:`~cryptography.x509.RevokedCertificate` now caches the computed
  ``Extensions`` object. There should be no performance change, just a
  performance improvement for programs accessing the ``extensions`` attribute
  multiple times.

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.. _v1-9:

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1.9 - 2017-05-29
~~~~~~~~~~~~~~~~

* **BACKWARDS INCOMPATIBLE:** Elliptic Curve signature verification no longer
  returns ``True`` on success. This brings it in line with the interface's
  documentation, and our intent. The correct way to use
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.verify`
  has always been to check whether or not
  :class:`~cryptography.exceptions.InvalidSignature` was raised.
* **BACKWARDS INCOMPATIBLE:** Dropped support for macOS 10.7 and 10.8.
* **BACKWARDS INCOMPATIBLE:** The minimum supported PyPy version is now 5.3.
* Python 3.3 support has been deprecated, and will be removed in the next
  ``cryptography`` release.
* Add support for providing ``tag`` during
  :class:`~cryptography.hazmat.primitives.ciphers.modes.GCM` finalization via
  :meth:`~cryptography.hazmat.primitives.ciphers.AEADDecryptionContext.finalize_with_tag`.
* Fixed an issue preventing ``cryptography`` from compiling against
  LibreSSL 2.5.x.
* Added
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.key_size`
  and
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey.key_size`
  as convenience methods for determining the bit size of a secret scalar for
  the curve.
* Accessing an unrecognized extension marked critical on an X.509 object will
  no longer raise an ``UnsupportedExtension`` exception, instead an
  :class:`~cryptography.x509.UnrecognizedExtension` object will be returned.
  This behavior was based on a poor reading of the RFC, unknown critical
  extensions only need to be rejected on certificate verification.
* The CommonCrypto backend has been removed.
* MultiBackend has been removed.
* ``Whirlpool`` and ``RIPEMD160`` have been deprecated.

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.. _v1-8-2:

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1.8.2 - 2017-05-26
~~~~~~~~~~~~~~~~~~

* Fixed a compilation bug affecting OpenSSL 1.1.0f.
* Updated Windows and macOS wheels to be compiled against OpenSSL 1.1.0f.

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.. _v1-8-1:

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1.8.1 - 2017-03-10
~~~~~~~~~~~~~~~~~~

* Fixed macOS wheels to properly link against 1.1.0 rather than 1.0.2.

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.. _v1-8:

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1.8 - 2017-03-09
~~~~~~~~~~~~~~~~

* Added support for Python 3.6.
* Windows and macOS wheels now link against OpenSSL 1.1.0.
* macOS wheels are no longer universal. This change significantly shrinks the
  size of the wheels. Users on macOS 32-bit Python (if there are any) should
  migrate to 64-bit or build their own packages.
* Changed ASN.1 dependency from ``pyasn1`` to ``asn1crypto`` resulting in a
  general performance increase when encoding/decoding ASN.1 structures. Also,
  the ``pyasn1_modules`` test dependency is no longer required.
* Added support for
  :meth:`~cryptography.hazmat.primitives.ciphers.CipherContext.update_into` on
  :class:`~cryptography.hazmat.primitives.ciphers.CipherContext`.
* Added
  :meth:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKeyWithSerialization.private_bytes`
  to
  :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKeyWithSerialization`.
* Added
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  :meth:`~cryptography.hazmat.primitives.asymmetric.dh.DHPublicKey.public_bytes`
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  to
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  :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPublicKey`.
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* :func:`~cryptography.hazmat.primitives.serialization.load_pem_private_key`
  and
  :func:`~cryptography.hazmat.primitives.serialization.load_der_private_key`
  now require that ``password`` must be bytes if provided. Previously this
  was documented but not enforced.
* Added support for subgroup order in :doc:`/hazmat/primitives/asymmetric/dh`.

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.. _v1-7-2:

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1.7.2 - 2017-01-27
~~~~~~~~~~~~~~~~~~

* Updated Windows and macOS wheels to be compiled against OpenSSL 1.0.2k.

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.. _v1-7-1:

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1.7.1 - 2016-12-13
~~~~~~~~~~~~~~~~~~

* Fixed a regression in ``int_from_bytes`` where it failed to accept
  ``bytearray``.

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.. _v1-7:

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1.7 - 2016-12-12
~~~~~~~~~~~~~~~~

* Support for OpenSSL 1.0.0 has been removed. Users on older version of OpenSSL
  will need to upgrade.
* Added support for Diffie-Hellman key exchange using
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  :meth:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKey.exchange`.
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* The OS random engine for OpenSSL has been rewritten to improve compatibility
  with embedded Python and other edge cases. More information about this change
  can be found in the
  `pull request <https://github.com/pyca/cryptography/pull/3229>`_.

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.. _v1-6:

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1.6 - 2016-11-22
~~~~~~~~~~~~~~~~

* Deprecated support for OpenSSL 1.0.0. Support will be removed in
  ``cryptography`` 1.7.
* Replaced the Python-based OpenSSL locking callbacks with a C version to fix
  a potential deadlock that could occur if a garbage collection cycle occurred
  while inside the lock.
* Added support for :class:`~cryptography.hazmat.primitives.hashes.BLAKE2b` and
  :class:`~cryptography.hazmat.primitives.hashes.BLAKE2s` when using OpenSSL
  1.1.0.
* Added
  :attr:`~cryptography.x509.Certificate.signature_algorithm_oid` support to
  :class:`~cryptography.x509.Certificate`.
* Added
  :attr:`~cryptography.x509.CertificateSigningRequest.signature_algorithm_oid`
  support to :class:`~cryptography.x509.CertificateSigningRequest`.
* Added
  :attr:`~cryptography.x509.CertificateRevocationList.signature_algorithm_oid`
  support to :class:`~cryptography.x509.CertificateRevocationList`.
* Added support for :class:`~cryptography.hazmat.primitives.kdf.scrypt.Scrypt`
  when using OpenSSL 1.1.0.
* Added a workaround to improve compatibility with Python application bundling
  tools like ``PyInstaller`` and ``cx_freeze``.
* Added support for generating a
  :meth:`~cryptography.x509.random_serial_number`.
* Added support for encoding ``IPv4Network`` and ``IPv6Network`` in X.509
  certificates for use with :class:`~cryptography.x509.NameConstraints`.
* Added :meth:`~cryptography.x509.Name.public_bytes` to
  :class:`~cryptography.x509.Name`.
* Added :class:`~cryptography.x509.RelativeDistinguishedName`
* :class:`~cryptography.x509.DistributionPoint` now accepts
  :class:`~cryptography.x509.RelativeDistinguishedName` for
  :attr:`~cryptography.x509.DistributionPoint.relative_name`.
  Deprecated use of :class:`~cryptography.x509.Name` as
  :attr:`~cryptography.x509.DistributionPoint.relative_name`.
* :class:`~cryptography.x509.Name` now accepts an iterable of
  :class:`~cryptography.x509.RelativeDistinguishedName`.  RDNs can
  be accessed via the :attr:`~cryptography.x509.Name.rdns`
  attribute.  When constructed with an iterable of
  :class:`~cryptography.x509.NameAttribute`, each attribute becomes
  a single-valued RDN.
* Added
  :func:`~cryptography.hazmat.primitives.asymmetric.ec.derive_private_key`.
* Added support for signing and verifying RSA, DSA, and ECDSA signatures with
  :class:`~cryptography.hazmat.primitives.asymmetric.utils.Prehashed`
  digests.

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.. _v1-5-3:

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1.5.3 - 2016-11-05
~~~~~~~~~~~~~~~~~~

* **SECURITY ISSUE**: Fixed a bug where ``HKDF`` would return an empty
  byte-string if used with a ``length`` less than ``algorithm.digest_size``.
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  Credit to **Markus Döring** for reporting the issue. *CVE-2016-9243*
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.. _v1-5-2:

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1.5.2 - 2016-09-26
~~~~~~~~~~~~~~~~~~

* Updated Windows and OS X wheels to be compiled against OpenSSL 1.0.2j.

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.. _v1-5-1:

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1.5.1 - 2016-09-22
~~~~~~~~~~~~~~~~~~

* Updated Windows and OS X wheels to be compiled against OpenSSL 1.0.2i.
* Resolved a ``UserWarning`` when used with cffi 1.8.3.
* Fixed a memory leak in name creation with X.509.
* Added a workaround for old versions of setuptools.
* Fixed an issue preventing ``cryptography`` from compiling against
  OpenSSL 1.0.2i.


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.. _v1-5:

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1.5 - 2016-08-26
~~~~~~~~~~~~~~~~

* Added
  :func:`~cryptography.hazmat.primitives.asymmetric.padding.calculate_max_pss_salt_length`.
* Added "one shot"
  :meth:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey.sign`
  and
  :meth:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey.verify`
  methods to DSA keys.
* Added "one shot"
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey.sign`
  and
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.verify`
  methods to ECDSA keys.
* Switched back to the older callback model on Python 3.5 in order to mitigate
  the locking callback problem with OpenSSL <1.1.0.
* :class:`~cryptography.x509.CertificateBuilder`,
  :class:`~cryptography.x509.CertificateRevocationListBuilder`, and
  :class:`~cryptography.x509.RevokedCertificateBuilder` now accept timezone
  aware ``datetime`` objects as method arguments
* ``cryptography`` now supports OpenSSL 1.1.0 as a compilation target.


591 592 593

.. _v1-4:

594 595 596 597 598 599 600 601 602 603 604 605 606 607 608
1.4 - 2016-06-04
~~~~~~~~~~~~~~~~

* Support for OpenSSL 0.9.8 has been removed. Users on older versions of
  OpenSSL will need to upgrade.
* Added :class:`~cryptography.hazmat.primitives.kdf.kbkdf.KBKDFHMAC`.
* Added support for ``OpenSSH`` public key serialization.
* Added support for SHA-2 in RSA
  :class:`~cryptography.hazmat.primitives.asymmetric.padding.OAEP` when using
  OpenSSL 1.0.2 or greater.
* Added "one shot"
  :meth:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey.sign`
  and
  :meth:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey.verify`
  methods to RSA keys.
609 610 611
* Deprecated the ``serial`` attribute on
  :class:`~cryptography.x509.Certificate`, in favor of
  :attr:`~cryptography.x509.Certificate.serial_number`.
612 613


614 615 616

.. _v1-3-4:

617 618 619 620 621 622
1.3.4 - 2016-06-03
~~~~~~~~~~~~~~~~~~

* Added another OpenSSL function to the bindings to support an upcoming
  ``pyOpenSSL`` release.

623

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.. _v1-3-3:

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1.3.3 - 2016-06-02
~~~~~~~~~~~~~~~~~~

* Added two new OpenSSL functions to the bindings to support an upcoming
  ``pyOpenSSL`` release.

633 634 635

.. _v1-3-2:

636 637 638 639 640 641 642
1.3.2 - 2016-05-04
~~~~~~~~~~~~~~~~~~

* Updated Windows and OS X wheels to be compiled against OpenSSL 1.0.2h.
* Fixed an issue preventing ``cryptography`` from compiling against
  LibreSSL 2.3.x.

643 644 645

.. _v1-3-1:

646 647 648 649 650 651
1.3.1 - 2016-03-21
~~~~~~~~~~~~~~~~~~

* Fixed a bug that caused an ``AttributeError`` when using ``mock`` to patch
  some ``cryptography`` modules.

652 653 654

.. _v1-3:

655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672
1.3 - 2016-03-18
~~~~~~~~~~~~~~~~

* Added support for padding ANSI X.923 with
  :class:`~cryptography.hazmat.primitives.padding.ANSIX923`.
* Deprecated support for OpenSSL 0.9.8. Support will be removed in
  ``cryptography`` 1.4.
* Added support for the :class:`~cryptography.x509.PolicyConstraints`
  X.509 extension including both parsing and generation using
  :class:`~cryptography.x509.CertificateBuilder` and
  :class:`~cryptography.x509.CertificateSigningRequestBuilder`.
* Added :attr:`~cryptography.x509.CertificateSigningRequest.is_signature_valid`
  to :class:`~cryptography.x509.CertificateSigningRequest`.
* Fixed an intermittent ``AssertionError`` when performing an RSA decryption on
  an invalid ciphertext, ``ValueError`` is now correctly raised in all cases.
* Added
  :meth:`~cryptography.x509.AuthorityKeyIdentifier.from_issuer_subject_key_identifier`.

673 674 675

.. _v1-2-3:

676 677 678 679 680
1.2.3 - 2016-03-01
~~~~~~~~~~~~~~~~~~

* Updated Windows and OS X wheels to be compiled against OpenSSL 1.0.2g.

681 682 683

.. _v1-2-2:

684 685 686 687 688
1.2.2 - 2016-01-29
~~~~~~~~~~~~~~~~~~

* Updated Windows and OS X wheels to be compiled against OpenSSL 1.0.2f.

689 690 691

.. _v1-2-1:

692 693 694 695 696 697
1.2.1 - 2016-01-08
~~~~~~~~~~~~~~~~~~

* Reverts a change to an OpenSSL ``EVP_PKEY`` object that caused errors with
  ``pyOpenSSL``.

698 699 700

.. _v1-2:

701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716
1.2 - 2016-01-08
~~~~~~~~~~~~~~~~

* **BACKWARDS INCOMPATIBLE:**
  :class:`~cryptography.x509.RevokedCertificate`
  :attr:`~cryptography.x509.RevokedCertificate.extensions` now uses extension
  classes rather than returning raw values inside the
  :class:`~cryptography.x509.Extension`
  :attr:`~cryptography.x509.Extension.value`. The new classes
  are:

  * :class:`~cryptography.x509.CertificateIssuer`
  * :class:`~cryptography.x509.CRLReason`
  * :class:`~cryptography.x509.InvalidityDate`
* Deprecated support for OpenSSL 0.9.8 and 1.0.0. At this time there is no time
  table for actually dropping support, however we strongly encourage all users
717
  to upgrade, as those versions no longer receive support from the OpenSSL
718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749
  project.
* The :class:`~cryptography.x509.Certificate` class now has
  :attr:`~cryptography.x509.Certificate.signature` and
  :attr:`~cryptography.x509.Certificate.tbs_certificate_bytes` attributes.
* The :class:`~cryptography.x509.CertificateSigningRequest` class now has
  :attr:`~cryptography.x509.CertificateSigningRequest.signature` and
  :attr:`~cryptography.x509.CertificateSigningRequest.tbs_certrequest_bytes`
  attributes.
* The :class:`~cryptography.x509.CertificateRevocationList` class now has
  :attr:`~cryptography.x509.CertificateRevocationList.signature` and
  :attr:`~cryptography.x509.CertificateRevocationList.tbs_certlist_bytes`
  attributes.
* :class:`~cryptography.x509.NameConstraints` are now supported in the
  :class:`~cryptography.x509.CertificateBuilder` and
  :class:`~cryptography.x509.CertificateSigningRequestBuilder`.
* Support serialization of certificate revocation lists using the
  :meth:`~cryptography.x509.CertificateRevocationList.public_bytes` method of
  :class:`~cryptography.x509.CertificateRevocationList`.
* Add support for parsing :class:`~cryptography.x509.CertificateRevocationList`
  :meth:`~cryptography.x509.CertificateRevocationList.extensions` in the
  OpenSSL backend. The following extensions are currently supported:

  * :class:`~cryptography.x509.AuthorityInformationAccess`
  * :class:`~cryptography.x509.AuthorityKeyIdentifier`
  * :class:`~cryptography.x509.CRLNumber`
  * :class:`~cryptography.x509.IssuerAlternativeName`
* Added :class:`~cryptography.x509.CertificateRevocationListBuilder` and
  :class:`~cryptography.x509.RevokedCertificateBuilder` to allow creation of
  CRLs.
* Unrecognized non-critical X.509 extensions are now parsed into an
  :class:`~cryptography.x509.UnrecognizedExtension` object.

750 751 752

.. _v1-1-2:

753 754 755 756 757 758 759 760 761
1.1.2 - 2015-12-10
~~~~~~~~~~~~~~~~~~

* Fixed a SIGBUS crash with the OS X wheels caused by redefinition of a
  method.
* Fixed a runtime error ``undefined symbol EC_GFp_nistp224_method`` that
  occurred with some OpenSSL installations.
* Updated Windows and OS X wheels to be compiled against OpenSSL 1.0.2e.

762 763 764

.. _v1-1-1:

765 766 767 768 769 770 771 772 773
1.1.1 - 2015-11-19
~~~~~~~~~~~~~~~~~~

* Fixed several small bugs related to compiling the OpenSSL bindings with
  unusual OpenSSL configurations.
* Resolved an issue where, depending on the method of installation and
  which Python interpreter they were using, users on El Capitan (OS X 10.11)
  may have seen an ``InternalError`` on import.

774 775 776

.. _v1-1:

777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800
1.1 - 2015-10-28
~~~~~~~~~~~~~~~~

* Added support for Elliptic Curve Diffie-Hellman with
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.ECDH`.
* Added :class:`~cryptography.hazmat.primitives.kdf.x963kdf.X963KDF`.
* Added support for parsing certificate revocation lists (CRLs) using
  :func:`~cryptography.x509.load_pem_x509_crl` and
  :func:`~cryptography.x509.load_der_x509_crl`.
* Add support for AES key wrapping with
  :func:`~cryptography.hazmat.primitives.keywrap.aes_key_wrap` and
  :func:`~cryptography.hazmat.primitives.keywrap.aes_key_unwrap`.
* Added a ``__hash__`` method to :class:`~cryptography.x509.Name`.
* Add support for encoding and decoding elliptic curve points to a byte string
  form using
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers.encode_point`
  and
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers.from_encoded_point`.
* Added :meth:`~cryptography.x509.Extensions.get_extension_for_class`.
* :class:`~cryptography.x509.CertificatePolicies` are now supported in the
  :class:`~cryptography.x509.CertificateBuilder`.
* ``countryName`` is now encoded as a ``PrintableString`` when creating subject
  and issuer distinguished names with the Certificate and CSR builder classes.

801 802 803

.. _v1-0-2:

804 805 806 807 808 809 810 811 812 813 814
1.0.2 - 2015-09-27
~~~~~~~~~~~~~~~~~~
* **SECURITY ISSUE**: The OpenSSL backend prior to 1.0.2 made extensive use
  of assertions to check response codes where our tests could not trigger a
  failure.  However, when Python is run with ``-O`` these asserts are optimized
  away.  If a user ran Python with this flag and got an invalid response code
  this could result in undefined behavior or worse. Accordingly, all response
  checks from the OpenSSL backend have been converted from ``assert``
  to a true function call. Credit **Emilia Käsper (Google Security Team)**
  for the report.

815 816 817

.. _v1-0-1:

818 819 820 821 822 823 824 825 826 827 828 829 830
1.0.1 - 2015-09-05
~~~~~~~~~~~~~~~~~~

* We now ship OS X wheels that statically link OpenSSL by default. When
  installing a wheel on OS X 10.10+ (and using a Python compiled against the
  10.10 SDK) users will no longer need to compile. See :doc:`/installation` for
  alternate installation methods if required.
* Set the default string mask to UTF-8 in the OpenSSL backend to resolve
  character encoding issues with older versions of OpenSSL.
* Several new OpenSSL bindings have been added to support a future pyOpenSSL
  release.
* Raise an error during install on PyPy < 2.6. 1.0+ requires PyPy 2.6+.

831 832 833

.. _v1-0:

834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893
1.0 - 2015-08-12
~~~~~~~~~~~~~~~~

* Switched to the new `cffi`_ ``set_source`` out-of-line API mode for
  compilation. This results in significantly faster imports and lowered
  memory consumption. Due to this change we no longer support PyPy releases
  older than 2.6 nor do we support any released version of PyPy3 (until a
  version supporting cffi 1.0 comes out).
* Fix parsing of OpenSSH public keys that have spaces in comments.
* Support serialization of certificate signing requests using the
  ``public_bytes`` method of
  :class:`~cryptography.x509.CertificateSigningRequest`.
* Support serialization of certificates using the ``public_bytes`` method of
  :class:`~cryptography.x509.Certificate`.
* Add ``get_provisioning_uri`` method to
  :class:`~cryptography.hazmat.primitives.twofactor.hotp.HOTP` and
  :class:`~cryptography.hazmat.primitives.twofactor.totp.TOTP` for generating
  provisioning URIs.
* Add :class:`~cryptography.hazmat.primitives.kdf.concatkdf.ConcatKDFHash`
  and :class:`~cryptography.hazmat.primitives.kdf.concatkdf.ConcatKDFHMAC`.
* Raise a ``TypeError`` when passing objects that are not text as the value to
  :class:`~cryptography.x509.NameAttribute`.
* Add support for :class:`~cryptography.x509.OtherName` as a general name
  type.
* Added new X.509 extension support in :class:`~cryptography.x509.Certificate`
  The following new extensions are now supported:

  * :class:`~cryptography.x509.OCSPNoCheck`
  * :class:`~cryptography.x509.InhibitAnyPolicy`
  * :class:`~cryptography.x509.IssuerAlternativeName`
  * :class:`~cryptography.x509.NameConstraints`

* Extension support was added to
  :class:`~cryptography.x509.CertificateSigningRequest`.
* Add support for creating signed certificates with
  :class:`~cryptography.x509.CertificateBuilder`. This includes support for
  the following extensions:

  * :class:`~cryptography.x509.BasicConstraints`
  * :class:`~cryptography.x509.SubjectAlternativeName`
  * :class:`~cryptography.x509.KeyUsage`
  * :class:`~cryptography.x509.ExtendedKeyUsage`
  * :class:`~cryptography.x509.SubjectKeyIdentifier`
  * :class:`~cryptography.x509.AuthorityKeyIdentifier`
  * :class:`~cryptography.x509.AuthorityInformationAccess`
  * :class:`~cryptography.x509.CRLDistributionPoints`
  * :class:`~cryptography.x509.InhibitAnyPolicy`
  * :class:`~cryptography.x509.IssuerAlternativeName`
  * :class:`~cryptography.x509.OCSPNoCheck`

* Add support for creating certificate signing requests with
  :class:`~cryptography.x509.CertificateSigningRequestBuilder`. This includes
  support for the same extensions supported in the ``CertificateBuilder``.
* Deprecate ``encode_rfc6979_signature`` and ``decode_rfc6979_signature`` in
  favor of
  :func:`~cryptography.hazmat.primitives.asymmetric.utils.encode_dss_signature`
  and
  :func:`~cryptography.hazmat.primitives.asymmetric.utils.decode_dss_signature`.


894 895 896

.. _v0-9-3:

897 898 899 900 901
0.9.3 - 2015-07-09
~~~~~~~~~~~~~~~~~~

* Updated Windows wheels to be compiled against OpenSSL 1.0.2d.

902 903 904

.. _v0-9-2:

905 906 907 908 909
0.9.2 - 2015-07-04
~~~~~~~~~~~~~~~~~~

* Updated Windows wheels to be compiled against OpenSSL 1.0.2c.

910 911 912

.. _v0-9-1:

913 914 915 916 917 918 919
0.9.1 - 2015-06-06
~~~~~~~~~~~~~~~~~~

* **SECURITY ISSUE**: Fixed a double free in the OpenSSL backend when using DSA
  to verify signatures. Note that this only affects PyPy 2.6.0 and (presently
  unreleased) CFFI versions greater than 1.1.0.

920 921 922

.. _v0-9:

923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969
0.9 - 2015-05-13
~~~~~~~~~~~~~~~~

* Removed support for Python 3.2. This version of Python is rarely used
  and caused support headaches. Users affected by this should upgrade to 3.3+.
* Deprecated support for Python 2.6. At the time there is no time table for
  actually dropping support, however we strongly encourage all users to upgrade
  their Python, as Python 2.6 no longer receives support from the Python core
  team.
* Add support for the
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.SECP256K1` elliptic
  curve.
* Fixed compilation when using an OpenSSL which was compiled with the
  ``no-comp`` (``OPENSSL_NO_COMP``) option.
* Support :attr:`~cryptography.hazmat.primitives.serialization.Encoding.DER`
  serialization of public keys using the ``public_bytes`` method of
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKeyWithSerialization`,
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKeyWithSerialization`,
  and
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKeyWithSerialization`.
* Support :attr:`~cryptography.hazmat.primitives.serialization.Encoding.DER`
  serialization of private keys using the ``private_bytes`` method of
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKeyWithSerialization`,
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKeyWithSerialization`,
  and
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKeyWithSerialization`.
* Add support for parsing X.509 certificate signing requests (CSRs) with
  :func:`~cryptography.x509.load_pem_x509_csr` and
  :func:`~cryptography.x509.load_der_x509_csr`.
* Moved ``cryptography.exceptions.InvalidToken`` to
  :class:`cryptography.hazmat.primitives.twofactor.InvalidToken` and deprecated
  the old location. This was moved to minimize confusion between this exception
  and :class:`cryptography.fernet.InvalidToken`.
* Added support for X.509 extensions in :class:`~cryptography.x509.Certificate`
  objects. The following extensions are supported as of this release:

  * :class:`~cryptography.x509.BasicConstraints`
  * :class:`~cryptography.x509.AuthorityKeyIdentifier`
  * :class:`~cryptography.x509.SubjectKeyIdentifier`
  * :class:`~cryptography.x509.KeyUsage`
  * :class:`~cryptography.x509.SubjectAlternativeName`
  * :class:`~cryptography.x509.ExtendedKeyUsage`
  * :class:`~cryptography.x509.CRLDistributionPoints`
  * :class:`~cryptography.x509.AuthorityInformationAccess`
  * :class:`~cryptography.x509.CertificatePolicies`

  Note that unsupported extensions with the critical flag raise
970 971 972
  ``UnsupportedExtension`` while unsupported extensions set to non-critical are
  silently ignored. Read the :doc:`X.509 documentation</x509/index>` for more
  information.
973

974 975 976

.. _v0-8-2:

977 978 979 980 981 982
0.8.2 - 2015-04-10
~~~~~~~~~~~~~~~~~~

* Fixed a race condition when initializing the OpenSSL or CommonCrypto backends
  in a multi-threaded scenario.

983 984 985

.. _v0-8-1:

986 987 988 989 990
0.8.1 - 2015-03-20
~~~~~~~~~~~~~~~~~~

* Updated Windows wheels to be compiled against OpenSSL 1.0.2a.

991 992 993

.. _v0-8:

994 995 996 997 998 999 1000 1001 1002 1003 1004
0.8 - 2015-03-08
~~~~~~~~~~~~~~~~

* :func:`~cryptography.hazmat.primitives.serialization.load_ssh_public_key` can
  now load elliptic curve public keys.
* Added
  :attr:`~cryptography.x509.Certificate.signature_hash_algorithm` support to
  :class:`~cryptography.x509.Certificate`.
* Added
  :func:`~cryptography.hazmat.primitives.asymmetric.rsa.rsa_recover_prime_factors`
* :class:`~cryptography.hazmat.primitives.kdf.KeyDerivationFunction` was moved
1005
  from ``cryptography.hazmat.primitives.interfaces`` to
1006 1007
  :mod:`~cryptography.hazmat.primitives.kdf`.
* Added support for parsing X.509 names. See the
1008
  :doc:`X.509 documentation</x509/index>` for more information.
1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022
* Added
  :func:`~cryptography.hazmat.primitives.serialization.load_der_private_key` to
  support loading of DER encoded private keys and
  :func:`~cryptography.hazmat.primitives.serialization.load_der_public_key` to
  support loading DER encoded public keys.
* Fixed building against LibreSSL, a compile-time substitute for OpenSSL.
* FreeBSD 9.2 was removed from the continuous integration system.
* Updated Windows wheels to be compiled against OpenSSL 1.0.2.
* :func:`~cryptography.hazmat.primitives.serialization.load_pem_public_key`
  and :func:`~cryptography.hazmat.primitives.serialization.load_der_public_key`
  now support PKCS1 RSA public keys (in addition to the previous support for
  SubjectPublicKeyInfo format for RSA, EC, and DSA).
* Added
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKeyWithSerialization`
1023
  and deprecated ``EllipticCurvePrivateKeyWithNumbers``.
1024 1025 1026 1027 1028 1029
* Added
  :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKeyWithSerialization.private_bytes`
  to
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKeyWithSerialization`.
* Added
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKeyWithSerialization`
1030
  and deprecated ``RSAPrivateKeyWithNumbers``.
1031 1032 1033 1034 1035 1036
* Added
  :meth:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKeyWithSerialization.private_bytes`
  to
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKeyWithSerialization`.
* Added
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKeyWithSerialization`
1037
  and deprecated ``DSAPrivateKeyWithNumbers``.
1038 1039 1040 1041 1042 1043
* Added
  :meth:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKeyWithSerialization.private_bytes`
  to
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKeyWithSerialization`.
* Added
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKeyWithSerialization`
1044 1045
  and deprecated ``RSAPublicKeyWithNumbers``.
* Added ``public_bytes`` to
1046 1047 1048
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKeyWithSerialization`.
* Added
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKeyWithSerialization`
1049 1050
  and deprecated ``EllipticCurvePublicKeyWithNumbers``.
* Added ``public_bytes`` to
1051 1052 1053
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKeyWithSerialization`.
* Added
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKeyWithSerialization`
1054 1055
  and deprecated ``DSAPublicKeyWithNumbers``.
* Added ``public_bytes`` to
1056 1057 1058
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKeyWithSerialization`.
* :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm` and
  :class:`~cryptography.hazmat.primitives.hashes.HashContext` were moved from
1059
  ``cryptography.hazmat.primitives.interfaces`` to
1060 1061 1062 1063 1064 1065
  :mod:`~cryptography.hazmat.primitives.hashes`.
* :class:`~cryptography.hazmat.primitives.ciphers.CipherContext`,
  :class:`~cryptography.hazmat.primitives.ciphers.AEADCipherContext`,
  :class:`~cryptography.hazmat.primitives.ciphers.AEADEncryptionContext`,
  :class:`~cryptography.hazmat.primitives.ciphers.CipherAlgorithm`, and
  :class:`~cryptography.hazmat.primitives.ciphers.BlockCipherAlgorithm`
1066
  were moved from ``cryptography.hazmat.primitives.interfaces`` to
1067 1068 1069 1070 1071
  :mod:`~cryptography.hazmat.primitives.ciphers`.
* :class:`~cryptography.hazmat.primitives.ciphers.modes.Mode`,
  :class:`~cryptography.hazmat.primitives.ciphers.modes.ModeWithInitializationVector`,
  :class:`~cryptography.hazmat.primitives.ciphers.modes.ModeWithNonce`, and
  :class:`~cryptography.hazmat.primitives.ciphers.modes.ModeWithAuthenticationTag`
1072
  were moved from ``cryptography.hazmat.primitives.interfaces`` to
1073 1074
  :mod:`~cryptography.hazmat.primitives.ciphers.modes`.
* :class:`~cryptography.hazmat.primitives.padding.PaddingContext` was moved
1075
  from ``cryptography.hazmat.primitives.interfaces`` to
1076 1077 1078
  :mod:`~cryptography.hazmat.primitives.padding`.
*
  :class:`~cryptography.hazmat.primitives.asymmetric.padding.AsymmetricPadding`
1079
  was moved from ``cryptography.hazmat.primitives.interfaces`` to
1080
  :mod:`~cryptography.hazmat.primitives.asymmetric.padding`.
1081
* ``AsymmetricSignatureContext`` and ``AsymmetricVerificationContext``
1082
  were moved from ``cryptography.hazmat.primitives.interfaces`` to
1083
  ``cryptography.hazmat.primitives.asymmetric``.
1084 1085 1086
* :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAParameters`,
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAParametersWithNumbers`,
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`,
1087
  ``DSAPrivateKeyWithNumbers``,
1088
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey` and
1089
  ``DSAPublicKeyWithNumbers`` were moved from
1090
  ``cryptography.hazmat.primitives.interfaces`` to
1091 1092 1093 1094
  :mod:`~cryptography.hazmat.primitives.asymmetric.dsa`
* :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurve`,
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurveSignatureAlgorithm`,
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey`,
1095
  ``EllipticCurvePrivateKeyWithNumbers``,
1096
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey`,
1097
  and ``EllipticCurvePublicKeyWithNumbers``
1098
  were moved from ``cryptography.hazmat.primitives.interfaces`` to
1099 1100
  :mod:`~cryptography.hazmat.primitives.asymmetric.ec`.
* :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`,
1101
  ``RSAPrivateKeyWithNumbers``,
1102
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey` and
1103
  ``RSAPublicKeyWithNumbers`` were moved from
1104
  ``cryptography.hazmat.primitives.interfaces`` to
1105 1106
  :mod:`~cryptography.hazmat.primitives.asymmetric.rsa`.

1107 1108 1109

.. _v0-7-2:

1110 1111 1112 1113 1114 1115 1116 1117 1118
0.7.2 - 2015-01-16
~~~~~~~~~~~~~~~~~~

* Updated Windows wheels to be compiled against OpenSSL 1.0.1l.
* ``enum34`` is no longer installed on Python 3.4, where it is included in
  the standard library.
* Added a new function to the OpenSSL bindings to support additional
  functionality in pyOpenSSL.

1119 1120 1121

.. _v0-7-1:

1122 1123 1124 1125 1126 1127
0.7.1 - 2014-12-28
~~~~~~~~~~~~~~~~~~

* Fixed an issue preventing compilation on platforms where ``OPENSSL_NO_SSL3``
  was defined.

1128 1129 1130

.. _v0-7:

1131 1132 1133 1134 1135 1136 1137 1138
0.7 - 2014-12-17
~~~~~~~~~~~~~~~~

* Cryptography has been relicensed from the Apache Software License, Version
  2.0, to being available under *either* the Apache Software License, Version
  2.0, or the BSD license.
* Added key-rotation support to :doc:`Fernet </fernet>` with
  :class:`~cryptography.fernet.MultiFernet`.
1139
* More bit-lengths are now supported for ``p`` and ``q`` when loading DSA keys
1140
  from numbers.
1141
* Added :class:`~cryptography.hazmat.primitives.mac.MACContext` as a
1142
  common interface for CMAC and HMAC and deprecated ``CMACContext``.
1143 1144 1145 1146 1147 1148 1149
* Added support for encoding and decoding :rfc:`6979` signatures in
  :doc:`/hazmat/primitives/asymmetric/utils`.
* Added
  :func:`~cryptography.hazmat.primitives.serialization.load_ssh_public_key` to
  support the loading of OpenSSH public keys (:rfc:`4253`). Only RSA and DSA
  keys are currently supported.
* Added initial support for X.509 certificate parsing. See the
1150
  :doc:`X.509 documentation</x509/index>` for more information.
1151

1152 1153 1154

.. _v0-6-1:

1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165
0.6.1 - 2014-10-15
~~~~~~~~~~~~~~~~~~

* Updated Windows wheels to be compiled against OpenSSL 1.0.1j.
* Fixed an issue where OpenSSL 1.0.1j changed the errors returned by some
  functions.
* Added our license file to the ``cryptography-vectors`` package.
* Implemented DSA hash truncation support (per FIPS 186-3) in the OpenSSL
  backend. This works around an issue in 1.0.0, 1.0.0a, and 1.0.0b where
  truncation was not implemented.

1166 1167 1168

.. _v0-6:

1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186
0.6 - 2014-09-29
~~~~~~~~~~~~~~~~

* Added
  :func:`~cryptography.hazmat.primitives.serialization.load_pem_private_key` to
  ease loading private keys, and
  :func:`~cryptography.hazmat.primitives.serialization.load_pem_public_key` to
  support loading public keys.
* Removed the, deprecated in 0.4, support for the ``salt_length`` argument to
  the :class:`~cryptography.hazmat.primitives.asymmetric.padding.MGF1`
  constructor. The ``salt_length`` should be passed to
  :class:`~cryptography.hazmat.primitives.asymmetric.padding.PSS` instead.
* Fix compilation on OS X Yosemite.
* Deprecated ``elliptic_curve_private_key_from_numbers`` and
  ``elliptic_curve_public_key_from_numbers`` in favor of
  ``load_elliptic_curve_private_numbers`` and
  ``load_elliptic_curve_public_numbers`` on
  :class:`~cryptography.hazmat.backends.interfaces.EllipticCurveBackend`.
1187 1188
* Added ``EllipticCurvePrivateKeyWithNumbers`` and
  ``EllipticCurvePublicKeyWithNumbers`` support.
1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201
* Work around three GCM related bugs in CommonCrypto and OpenSSL.

  * On the CommonCrypto backend adding AAD but not subsequently calling update
    would return null tag bytes.

  * One the CommonCrypto backend a call to update without an empty add AAD call
    would return null ciphertext bytes.

  * On the OpenSSL backend with certain versions adding AAD only would give
    invalid tag bytes.

* Support loading EC private keys from PEM.

1202 1203 1204

.. _v0-5-4:

1205 1206 1207 1208 1209 1210 1211
0.5.4 - 2014-08-20
~~~~~~~~~~~~~~~~~~

* Added several functions to the OpenSSL bindings to support new
  functionality in pyOpenSSL.
* Fixed a redefined constant causing compilation failure with Solaris 11.2.

1212 1213 1214

.. _v0-5-3:

1215 1216 1217 1218 1219
0.5.3 - 2014-08-06
~~~~~~~~~~~~~~~~~~

* Updated Windows wheels to be compiled against OpenSSL 1.0.1i.

1220 1221 1222

.. _v0-5-2:

1223 1224 1225
0.5.2 - 2014-07-09
~~~~~~~~~~~~~~~~~~

1226
* Add ``TraditionalOpenSSLSerializationBackend`` support to ``multibackend``.
1227 1228
* Fix compilation error on OS X 10.8 (Mountain Lion).

1229 1230 1231

.. _v0-5-1:

1232 1233 1234
0.5.1 - 2014-07-07
~~~~~~~~~~~~~~~~~~

1235
* Add ``PKCS8SerializationBackend`` support to ``multibackend``.
1236

1237 1238 1239

.. _v0-5:

1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255
0.5 - 2014-07-07
~~~~~~~~~~~~~~~~

* **BACKWARDS INCOMPATIBLE:**
  :class:`~cryptography.hazmat.primitives.ciphers.modes.GCM` no longer allows
  truncation of tags by default. Previous versions of ``cryptography`` allowed
  tags to be truncated by default, applications wishing to preserve this
  behavior (not recommended) can pass the ``min_tag_length`` argument.
* Windows builds now statically link OpenSSL by default. When installing a
  wheel on Windows you no longer need to install OpenSSL separately. Windows
  users can switch between static and dynamic linking with an environment
  variable. See :doc:`/installation` for more details.
* Added :class:`~cryptography.hazmat.primitives.kdf.hkdf.HKDFExpand`.
* Added :class:`~cryptography.hazmat.primitives.ciphers.modes.CFB8` support
  for :class:`~cryptography.hazmat.primitives.ciphers.algorithms.AES` and
  :class:`~cryptography.hazmat.primitives.ciphers.algorithms.TripleDES` on
1256
  ``commoncrypto`` and :doc:`/hazmat/backends/openssl`.
1257 1258
* Added ``AES`` :class:`~cryptography.hazmat.primitives.ciphers.modes.CTR`
  support to the OpenSSL backend when linked against 0.9.8.
1259 1260 1261
* Added ``PKCS8SerializationBackend`` and
  ``TraditionalOpenSSLSerializationBackend`` support to the
  :doc:`/hazmat/backends/openssl`.
1262 1263 1264 1265
* Added :doc:`/hazmat/primitives/asymmetric/ec` and
  :class:`~cryptography.hazmat.backends.interfaces.EllipticCurveBackend`.
* Added :class:`~cryptography.hazmat.primitives.ciphers.modes.ECB` support
  for :class:`~cryptography.hazmat.primitives.ciphers.algorithms.TripleDES` on
1266
  ``commoncrypto`` and :doc:`/hazmat/backends/openssl`.
1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286
* Deprecated the concrete ``RSAPrivateKey`` class in favor of backend
  specific providers of the
  :class:`cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`
  interface.
* Deprecated the concrete ``RSAPublicKey`` in favor of backend specific
  providers of the
  :class:`cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey`
  interface.
* Deprecated the concrete ``DSAPrivateKey`` class in favor of backend
  specific providers of the
  :class:`cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`
  interface.
* Deprecated the concrete ``DSAPublicKey`` class in favor of backend specific
  providers of the
  :class:`cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey`
  interface.
* Deprecated the concrete ``DSAParameters`` class in favor of backend specific
  providers of the
  :class:`cryptography.hazmat.primitives.asymmetric.dsa.DSAParameters`
  interface.
1287 1288 1289 1290 1291 1292
* Deprecated ``encrypt_rsa``, ``decrypt_rsa``, ``create_rsa_signature_ctx`` and
  ``create_rsa_verification_ctx`` on
  :class:`~cryptography.hazmat.backends.interfaces.RSABackend`.
* Deprecated ``create_dsa_signature_ctx`` and ``create_dsa_verification_ctx``
  on :class:`~cryptography.hazmat.backends.interfaces.DSABackend`.

1293 1294 1295

.. _v0-4:

1296 1297 1298 1299 1300
0.4 - 2014-05-03
~~~~~~~~~~~~~~~~

* Deprecated ``salt_length`` on
  :class:`~cryptography.hazmat.primitives.asymmetric.padding.MGF1` and added it
1301 1302 1303 1304 1305
  to :class:`~cryptography.hazmat.primitives.asymmetric.padding.PSS`. It will
  be removed from ``MGF1`` in two releases per our :doc:`/api-stability`
  policy.
* Added :class:`~cryptography.hazmat.primitives.ciphers.algorithms.SEED`
  support.
1306 1307 1308 1309 1310 1311 1312 1313 1314 1315
* Added :class:`~cryptography.hazmat.primitives.cmac.CMAC`.
* Added decryption support to
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`
  and encryption support to
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey`.
* Added signature support to
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`
  and verification support to
  :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey`.

1316 1317 1318

.. _v0-3:

1319 1320 1321 1322 1323
0.3 - 2014-03-27
~~~~~~~~~~~~~~~~

* Added :class:`~cryptography.hazmat.primitives.twofactor.hotp.HOTP`.
* Added :class:`~cryptography.hazmat.primitives.twofactor.totp.TOTP`.
1324 1325
* Added :class:`~cryptography.hazmat.primitives.ciphers.algorithms.IDEA`
  support.
1326 1327 1328 1329
* Added signature support to
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`
  and verification support to
  :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey`.
1330 1331
* Moved test vectors to the new ``cryptography_vectors`` package.

1332 1333 1334

.. _v0-2-2:

1335 1336 1337
0.2.2 - 2014-03-03
~~~~~~~~~~~~~~~~~~

1338 1339
* Removed a constant definition that was causing compilation problems with
  specific versions of OpenSSL.
1340

1341 1342 1343

.. _v0-2-1:

1344 1345 1346
0.2.1 - 2014-02-22
~~~~~~~~~~~~~~~~~~

1347 1348
* Fix a bug where importing cryptography from multiple paths could cause
  initialization to fail.
1349

1350 1351 1352

.. _v0-2:

1353 1354 1355
0.2 - 2014-02-20
~~~~~~~~~~~~~~~~

1356 1357
* Added ``commoncrypto``.
* Added initial ``commoncrypto``.
1358 1359 1360 1361 1362 1363 1364 1365
* Removed ``register_cipher_adapter`` method from
  :class:`~cryptography.hazmat.backends.interfaces.CipherBackend`.
* Added support for the OpenSSL backend under Windows.
* Improved thread-safety for the OpenSSL backend.
* Fixed compilation on systems where OpenSSL's ``ec.h`` header is not
  available, such as CentOS.
* Added :class:`~cryptography.hazmat.primitives.kdf.pbkdf2.PBKDF2HMAC`.
* Added :class:`~cryptography.hazmat.primitives.kdf.hkdf.HKDF`.
1366
* Added ``multibackend``.
1367 1368 1369 1370
* Set default random for the :doc:`/hazmat/backends/openssl` to the OS
  random engine.
* Added :class:`~cryptography.hazmat.primitives.ciphers.algorithms.CAST5`
  (CAST-128) support.
1371

1372 1373 1374

.. _v0-1:

1375 1376 1377 1378 1379 1380
0.1 - 2014-01-08
~~~~~~~~~~~~~~~~

* Initial release.

.. _`master`: https://github.com/pyca/cryptography/
1381
.. _`cffi`: https://cffi.readthedocs.io/