- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.1.3.
- Fixed performance regression loading DH public keys.
- Fixed a memory leak when using :class:`~cryptography.hazmat.primitives.ciphers.aead.ChaCha20Poly1305`.
- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.1.2.
- Fixed bugs in creating and parsing SSH certificates where critical options with values were handled incorrectly. Certificates are now created correctly and parsing accepts correct values as well as the previously generated invalid forms with a warning. In the next release, support for parsing these invalid forms will be removed.
- Temporarily allow invalid ECDSA signature algorithm parameters in X.509 certificates, which are generated by older versions of Java.
- Allow null bytes in pass phrases when serializing private keys.
- BACKWARDS INCOMPATIBLE: Support for OpenSSL less than 1.1.1d has been removed. Users on older version of OpenSSL will need to upgrade.
- BACKWARDS INCOMPATIBLE: Support for Python 3.6 has been removed.
- BACKWARDS INCOMPATIBLE: Dropped support for LibreSSL < 3.6.
- Updated the minimum supported Rust version (MSRV) to 1.56.0, from 1.48.0.
- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.1.1.
- Added support for the :class:`~cryptography.x509.OCSPAcceptableResponses` OCSP extension.
- Added support for the :class:`~cryptography.x509.MSCertificateTemplate` proprietary Microsoft certificate extension.
- Implemented support for equality checks on all asymmetric public key types.
- Added support for
[email protected]
encrypted keys in :func:`~cryptography.hazmat.primitives.serialization.load_ssh_private_key`. - Added support for obtaining X.509 certificate signature algorithm parameters (including PSS) via :meth:`~cryptography.x509.Certificate.signature_algorithm_parameters`.
- Support signing :class:`~cryptography.hazmat.primitives.asymmetric.padding.PSS`
X.509 certificates via the new keyword-only argument
rsa_padding
on :meth:`~cryptography.x509.CertificateBuilder.sign`. - Added support for :class:`~cryptography.hazmat.primitives.ciphers.aead.ChaCha20Poly1305` on BoringSSL.
- Fixed compilation when using LibreSSL 3.7.2.
- Added some functions to support an upcoming
pyOpenSSL
release.
- Fixed a bug where certain operations would fail if an object happened to be in the top-half of the memory-space. This only impacted 32-bit systems.
- BACKWARDS INCOMPATIBLE: As announced in the 39.0.0 changelog, the way
cryptography
links OpenSSL has changed. This only impacts users who buildcryptography
from source (i.e., not from awheel
), and specify their own version of OpenSSL. For those users, theCFLAGS
,LDFLAGS
,INCLUDE
,LIB
, andCRYPTOGRAPHY_SUPPRESS_LINK_FLAGS
environment variables are no longer valid. Instead, users need to configure their builds as documented here. - Support for Python 3.6 is deprecated and will be removed in the next release.
- Deprecated the current minimum supported Rust version (MSRV) of 1.48.0.
In the next release we will raise MSRV to 1.56.0. Users with the latest
pip
will typically get a wheel and not need Rust installed, but check :doc:`/installation` for documentation on installing a newerrustc
if required. - Deprecated support for OpenSSL less than 1.1.1d. The next release of
cryptography
will drop support for older versions. - Deprecated support for DSA keys in :func:`~cryptography.hazmat.primitives.serialization.load_ssh_public_key` and :func:`~cryptography.hazmat.primitives.serialization.load_ssh_private_key`.
- Deprecated support for OpenSSH serialization in :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey` and :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`.
- The minimum supported version of PyPy3 is now 7.3.10.
- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.1.0.
- Added support for parsing SSH certificates in addition to public keys with :func:`~cryptography.hazmat.primitives.serialization.load_ssh_public_identity`. :func:`~cryptography.hazmat.primitives.serialization.load_ssh_public_key` continues to support only public keys.
- Added support for generating SSH certificates with :class:`~cryptography.hazmat.primitives.serialization.SSHCertificateBuilder`.
- Added :meth:`~cryptography.x509.Certificate.verify_directly_issued_by` to :class:`~cryptography.x509.Certificate`.
- Added a check to :class:`~cryptography.x509.NameConstraints` to ensure that
:class:`~cryptography.x509.DNSName` constraints do not contain any
*
wildcards. - Removed many unused CFFI OpenSSL bindings. This will not impact you unless
you are using
cryptography
to directly invoke OpenSSL's C API. Note that these have never been considered a stable, supported, public API bycryptography
, this note is included as a courtesy. - The X.509 builder classes now raise
UnsupportedAlgorithm
instead ofValueError
if an unsupported hash algorithm is passed. - Added public union type aliases for type hinting:
- Asymmetric types: :const:`~cryptography.hazmat.primitives.asymmetric.types.PublicKeyTypes`, :const:`~cryptography.hazmat.primitives.asymmetric.types.PrivateKeyTypes`, :const:`~cryptography.hazmat.primitives.asymmetric.types.CertificatePublicKeyTypes`, :const:`~cryptography.hazmat.primitives.asymmetric.types.CertificateIssuerPublicKeyTypes`, :const:`~cryptography.hazmat.primitives.asymmetric.types.CertificateIssuerPrivateKeyTypes`.
- SSH keys: :const:`~cryptography.hazmat.primitives.serialization.SSHPublicKeyTypes`, :const:`~cryptography.hazmat.primitives.serialization.SSHPrivateKeyTypes`, :const:`~cryptography.hazmat.primitives.serialization.SSHCertPublicKeyTypes`, :const:`~cryptography.hazmat.primitives.serialization.SSHCertPrivateKeyTypes`.
- PKCS12: :const:`~cryptography.hazmat.primitives.serialization.pkcs12.PKCS12PrivateKeyTypes`
- PKCS7: :const:`~cryptography.hazmat.primitives.serialization.pkcs7.PKCS7HashTypes`, :const:`~cryptography.hazmat.primitives.serialization.pkcs7.PKCS7PrivateKeyTypes`.
- Two-factor: :const:`~cryptography.hazmat.primitives.twofactor.hotp.HOTPHashTypes`
- Deprecated previously undocumented but not private type aliases in the
cryptography.hazmat.primitives.asymmetric.types
module in favor of new ones above.
- Fixed a bug where the content type header was not properly encoded for
PKCS7 signatures when using the
Text
option andSMIME
encoding.
- SECURITY ISSUE - Fixed a bug where
Cipher.update_into
accepted Python buffer protocol objects, but allowed immutable buffers. CVE-2023-23931 - Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.0.8.
- BACKWARDS INCOMPATIBLE: Support for OpenSSL 1.1.0 has been removed. Users on older version of OpenSSL will need to upgrade.
- BACKWARDS INCOMPATIBLE: Dropped support for LibreSSL < 3.5. The new minimum LibreSSL version is 3.5.0. Going forward our policy is to support versions of LibreSSL that are available in versions of OpenBSD that are still receiving security support.
- BACKWARDS INCOMPATIBLE: Removed the
encode_point
andfrom_encoded_point
methods on :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers`, which had been deprecated for several years. :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.public_bytes` and :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.from_encoded_point` should be used instead. - BACKWARDS INCOMPATIBLE: Support for using MD5 or SHA1 in :class:`~cryptography.x509.CertificateBuilder`, other X.509 builders, and PKCS7 has been removed.
- BACKWARDS INCOMPATIBLE: Dropped support for macOS 10.10 and 10.11, macOS users must upgrade to 10.12 or newer.
- ANNOUNCEMENT: The next version of
cryptography
(40.0) will change the way we link OpenSSL. This will only impact users who buildcryptography
from source (i.e., not from awheel
), and specify their own version of OpenSSL. For those users, theCFLAGS
,LDFLAGS
,INCLUDE
,LIB
, andCRYPTOGRAPHY_SUPPRESS_LINK_FLAGS
environment variables will no longer be respected. Instead, users will need to configure their builds as documented here. - Added support for :ref:`disabling the legacy provider in OpenSSL 3.0.x<legacy-provider>`.
- Added support for disabling RSA key validation checks when loading RSA keys via :func:`~cryptography.hazmat.primitives.serialization.load_pem_private_key`, :func:`~cryptography.hazmat.primitives.serialization.load_der_private_key`, and :meth:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateNumbers.private_key`. This speeds up key loading but is :term:`unsafe` if you are loading potentially attacker supplied keys.
- Significantly improved performance for
:class:`~cryptography.hazmat.primitives.ciphers.aead.ChaCha20Poly1305`
when repeatedly calling
encrypt
ordecrypt
with the same key. - Added support for creating OCSP requests with precomputed hashes using :meth:`~cryptography.x509.ocsp.OCSPRequestBuilder.add_certificate_by_hash`.
- Added support for loading multiple PEM-encoded X.509 certificates from a single input via :func:`~cryptography.x509.load_pem_x509_certificates`.
- Fixed compilation when using LibreSSL 3.6.0.
- Fixed error when using
py2app
to build an application with acryptography
dependency.
- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.0.7, which resolves CVE-2022-3602 and CVE-2022-3786.
Attention!
This release was subsequently yanked from PyPI due to a regression in OpenSSL.
- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.0.6.
- Fixed parsing TLVs in ASN.1 with length greater than 65535 bytes (typically seen in large CRLs).
- Final deprecation of OpenSSL 1.1.0. The next release of
cryptography
will drop support. - We no longer ship
manylinux2010
wheels. Users should upgrade to the latestpip
to ensure this doesn't cause issues downloading wheels on their platform. We now shipmanylinux_2_28
wheels for users on new enough platforms. - Updated the minimum supported Rust version (MSRV) to 1.48.0, from 1.41.0.
Users with the latest
pip
will typically get a wheel and not need Rust installed, but check :doc:`/installation` for documentation on installing a newerrustc
if required. - :meth:`~cryptography.fernet.Fernet.decrypt` and related methods now accept
both
str
andbytes
tokens. - Parsing
CertificateSigningRequest
restores the behavior of enforcing that theExtension
critical
field must be correctly encoded DER. See the issue for complete details. - Added two new OpenSSL functions to the bindings to support an upcoming
pyOpenSSL
release. - When parsing :class:`~cryptography.x509.CertificateRevocationList` and
:class:`~cryptography.x509.CertificateSigningRequest` values, it is now
enforced that the
version
value in the input must be valid according to the rules of RFC 2986 and RFC 5280. - Using MD5 or SHA1 in :class:`~cryptography.x509.CertificateBuilder` and other X.509 builders is deprecated and support will be removed in the next version.
- Added additional APIs to :class:`~cryptography.x509.certificate_transparency.SignedCertificateTimestamp`, including :attr:`~cryptography.x509.certificate_transparency.SignedCertificateTimestamp.signature_hash_algorithm`, :attr:`~cryptography.x509.certificate_transparency.SignedCertificateTimestamp.signature_algorithm`, :attr:`~cryptography.x509.certificate_transparency.SignedCertificateTimestamp.signature`, and :attr:`~cryptography.x509.certificate_transparency.SignedCertificateTimestamp.extension_bytes`.
- Added :attr:`~cryptography.x509.Certificate.tbs_precertificate_bytes`, allowing users to access the to-be-signed pre-certificate data needed for signed certificate timestamp verification.
- :class:`~cryptography.hazmat.primitives.kdf.kbkdf.KBKDFHMAC` and :class:`~cryptography.hazmat.primitives.kdf.kbkdf.KBKDFCMAC` now support :attr:`~cryptography.hazmat.primitives.kdf.kbkdf.CounterLocation.MiddleFixed` counter location.
- Fixed RFC 4514 name parsing to reverse the order of the RDNs according to the section 2.1 of the RFC, affecting method :meth:`~cryptography.x509.Name.from_rfc4514_string`.
- It is now possible to customize some aspects of encryption when serializing private keys, using :meth:`~cryptography.hazmat.primitives.serialization.PrivateFormat.encryption_builder`.
- Removed several legacy symbols from our OpenSSL bindings. Users of pyOpenSSL versions older than 22.0 will need to upgrade.
- Added :class:`~cryptography.hazmat.primitives.ciphers.algorithms.AES128` and :class:`~cryptography.hazmat.primitives.ciphers.algorithms.AES256` classes. These classes do not replace :class:`~cryptography.hazmat.primitives.ciphers.algorithms.AES` (which allows all AES key lengths), but are intended for applications where developers want to be explicit about key length.
- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.0.5.
Attention!
This release was subsequently yanked from PyPI due to a regression in OpenSSL.
- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.0.4.
- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.0.3.
- Added a constant needed for an upcoming pyOpenSSL release.
- Fixed an issue where parsing an encrypted private key with the public loader functions would hang waiting for console input on OpenSSL 3.0.x rather than raising an error.
- Restored some legacy symbols for older
pyOpenSSL
users. These will be removed again in the future, sopyOpenSSL
users should still upgrade to the latest version of that package when they upgradecryptography
.
- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.0.2.
- BACKWARDS INCOMPATIBLE: Dropped support for LibreSSL 2.9.x and 3.0.x. The new minimum LibreSSL version is 3.1+.
- BACKWARDS INCOMPATIBLE: Removed
signer
andverifier
methods from the public key and private key classes. These methods were originally deprecated in version 2.0, but had an extended deprecation timeline due to usage. Any remaining users should transition tosign
andverify
. - Deprecated OpenSSL 1.1.0 support. OpenSSL 1.1.0 is no longer supported by
the OpenSSL project. The next release of
cryptography
will be the last to support compiling with OpenSSL 1.1.0. - Deprecated Python 3.6 support. Python 3.6 is no longer supported by the
Python core team. Support for Python 3.6 will be removed in a future
cryptography
release. - Deprecated the current minimum supported Rust version (MSRV) of 1.41.0.
In the next release we will raise MSRV to 1.48.0. Users with the latest
pip
will typically get a wheel and not need Rust installed, but check :doc:`/installation` for documentation on installing a newerrustc
if required. - Deprecated
:class:`~cryptography.hazmat.primitives.ciphers.algorithms.CAST5`,
:class:`~cryptography.hazmat.primitives.ciphers.algorithms.SEED`,
:class:`~cryptography.hazmat.primitives.ciphers.algorithms.IDEA`, and
:class:`~cryptography.hazmat.primitives.ciphers.algorithms.Blowfish` because
they are legacy algorithms with extremely low usage. These will be removed
in a future version of
cryptography
. - Added limited support for distinguished names containing a bit string.
- We now ship
universal2
wheels on macOS, which contain botharm64
andx86_64
architectures. Users on macOS should upgrade to the latestpip
to ensure they can use this wheel, although we will continue to shipx86_64
specific wheels for now to ease the transition. - This will be the final release for which we ship
manylinux2010
wheels. Going forward the minimum supportedmanylinux
ABI for our wheels will bemanylinux2014
. The vast majority of users will continue to receivemanylinux
wheels provided they have an up to datepip
. For PyPy wheels this release already requiresmanylinux2014
for compatibility with binaries distributed by upstream. - Added support for multiple :class:`~cryptography.x509.ocsp.OCSPSingleResponse` in a :class:`~cryptography.x509.ocsp.OCSPResponse`.
- Restored support for signing certificates and other structures in :doc:`/x509/index` with SHA3 hash algorithms.
- :class:`~cryptography.hazmat.primitives.ciphers.algorithms.TripleDES` is disabled in FIPS mode.
- Added support for serialization of PKCS#12 CA friendly names/aliases in :func:`~cryptography.hazmat.primitives.serialization.pkcs12.serialize_key_and_certificates`
- Added support for 12-15 byte (96 to 120 bit) nonces to :class:`~cryptography.hazmat.primitives.ciphers.aead.AESOCB3`. This class previously supported only 12 byte (96 bit).
- Added support for :class:`~cryptography.hazmat.primitives.ciphers.aead.AESSIV` when using OpenSSL 3.0.0+.
- Added support for serializing PKCS7 structures from a list of certificates with :class:`~cryptography.hazmat.primitives.serialization.pkcs7.serialize_certificates`.
- Added support for parsing RFC 4514 strings with :meth:`~cryptography.x509.Name.from_rfc4514_string`.
- Added :attr:`~cryptography.hazmat.primitives.asymmetric.padding.PSS.AUTO` to :class:`~cryptography.hazmat.primitives.asymmetric.padding.PSS`. This can be used to verify a signature where the salt length is not already known.
- Added :attr:`~cryptography.hazmat.primitives.asymmetric.padding.PSS.DIGEST_LENGTH`
to :class:`~cryptography.hazmat.primitives.asymmetric.padding.PSS`. This
constant will set the salt length to the same length as the
PSS
hash algorithm. - Added support for loading RSA-PSS key types with :func:`~cryptography.hazmat.primitives.serialization.load_pem_private_key` and :func:`~cryptography.hazmat.primitives.serialization.load_der_private_key`. This functionality is limited to OpenSSL 1.1.1e+ and loads the key as a normal RSA private key, discarding the PSS constraint information.
- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 1.1.1n.
- Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 1.1.1m.
FINAL DEPRECATION Support for
verifier
andsigner
on our asymmetric key classes was deprecated in version 2.0. These functions had an extended deprecation due to usage, however the next version ofcryptography
will drop support. Users should migrate tosign
andverify
.The entire :doc:`/x509/index` layer is now written in Rust. This allows alternate asymmetric key implementations that can support cloud key management services or hardware security modules provided they implement the necessary interface (for example: :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey`).
:ref:`Deprecated the backend argument<faq-missing-backend>` for all functions.
Added support for :class:`~cryptography.hazmat.primitives.ciphers.aead.AESOCB3`.
Added support for iterating over arbitrary request :attr:`~cryptography.x509.CertificateSigningRequest.attributes`.
Deprecated the
get_attribute_for_oid
method on :class:`~cryptography.x509.CertificateSigningRequest` in favor of :meth:`~cryptography.x509.Attributes.get_attribute_for_oid` on the new :class:`~cryptography.x509.Attributes` object.Fixed handling of PEM files to allow loading when certificate and key are in the same file.
Fixed parsing of :class:`~cryptography.x509.CertificatePolicies` extensions containing legacy
BMPString
values in theirexplicitText
.Allow parsing of negative serial numbers in certificates. Negative serial numbers are prohibited by RFC 5280 so a deprecation warning will be raised whenever they are encountered. A future version of
cryptography
will drop support for parsing them.Added support for parsing PKCS12 files with friendly names for all certificates with :func:`~cryptography.hazmat.primitives.serialization.pkcs12.load_pkcs12`, which will return an object of type :class:`~cryptography.hazmat.primitives.serialization.pkcs12.PKCS12KeyAndCertificates`.
:meth:`~cryptography.x509.Name.rfc4514_string` and related methods now have an optional
attr_name_overrides
parameter to supply custom OID to name mappings, which can be used to match vendor-specific extensions.BACKWARDS INCOMPATIBLE: Reverted the nonstandard formatting of email address fields as
E
in :meth:`~cryptography.x509.Name.rfc4514_string` methods from version 35.0.The previous behavior can be restored with:
name.rfc4514_string({NameOID.EMAIL_ADDRESS: "E"})
Allow :class:`~cryptography.hazmat.primitives.asymmetric.x25519.X25519PublicKey` and :class:`~cryptography.hazmat.primitives.asymmetric.x448.X448PublicKey` to be used as public keys when parsing certificates or creating them with :class:`~cryptography.x509.CertificateBuilder`. These key types must be signed with a different signing algorithm as
X25519
andX448
do not support signing.Extension values can now be serialized to a DER byte string by calling :func:`~cryptography.x509.ExtensionType.public_bytes`.
Added experimental support for compiling against BoringSSL. As BoringSSL does not commit to a stable API,
cryptography
tests against the latest commit only. Please note that several features are not available when building against BoringSSL.Parsing
CertificateSigningRequest
from DER and PEM now, for a limited time period, allows theExtension
critical
field to be incorrectly encoded. See the issue for complete details. This will be reverted in a futurecryptography
release.When :class:`~cryptography.x509.OCSPNonce` are parsed and generated their value is now correctly wrapped in an ASN.1
OCTET STRING
. This conforms to RFC 6960 but conflicts with the original behavior specified in RFC 2560. For a temporary period for backwards compatibility, we will also parse values that are encoded as specified in RFC 2560 but this behavior will be removed in a future release.
- Changed the :ref:`version scheme <api-stability:versioning>`. This will result in us incrementing the major version more frequently, but does not change our existing backwards compatibility policy.
- BACKWARDS INCOMPATIBLE: The :doc:`/x509/index` PEM parsers now require that the PEM string passed have PEM delimiters of the correct type. For example, parsing a private key PEM concatenated with a certificate PEM will no longer be accepted by the PEM certificate parser.
- BACKWARDS INCOMPATIBLE: The X.509 certificate parser no longer allows negative serial numbers. RFC 5280 has always prohibited these.
- BACKWARDS INCOMPATIBLE: Additional forms of invalid ASN.1 found during :doc:`/x509/index` parsing will raise an error on initial parse rather than when the malformed field is accessed.
- Rust is now required for building
cryptography
, theCRYPTOGRAPHY_DONT_BUILD_RUST
environment variable is no longer respected. - Parsers for :doc:`/x509/index` no longer use OpenSSL and have been rewritten in Rust. This should be backwards compatible (modulo the items listed above) and improve both security and performance.
- Added support for OpenSSL 3.0.0 as a compilation target.
- Added support for :class:`~cryptography.hazmat.primitives.hashes.SM3` and :class:`~cryptography.hazmat.primitives.ciphers.algorithms.SM4`, when using OpenSSL 1.1.1. These algorithms are provided for compatibility in regions where they may be required, and are not generally recommended.
- We now ship
manylinux_2_24
andmusllinux_1_1
wheels, in addition to ourmanylinux2010
andmanylinux2014
wheels. Users on distributions like Alpine Linux should ensure they upgrade to the latestpip
to correctly receive wheels. - Added
rfc4514_attribute_name
attribute to :attr:`x509.NameAttribute <cryptography.x509.NameAttribute.rfc4514_attribute_name>`. - Added :class:`~cryptography.hazmat.primitives.kdf.kbkdf.KBKDFCMAC`.
- Updated Windows, macOS, and
manylinux
wheels to be compiled with OpenSSL 1.1.1l.
- Updated Windows, macOS, and
manylinux
wheels to be compiled with OpenSSL 1.1.1k.
- Updated Windows, macOS, and
manylinux
wheels to be compiled with OpenSSL 1.1.1j.
- Various improvements to type hints.
- Lower the minimum supported Rust version (MSRV) to >=1.41.0. This change improves compatibility with system-provided Rust on several Linux distributions.
cryptography
will be switching to a new versioning scheme with its next feature release. More information is available in our :doc:`/api-stability` documentation.
- Added a
py.typed
file so thatmypy
will know to use our type annotations. - Fixed an import cycle that could be triggered by certain import sequences.
- Specify our supported Rust version (>=1.45.0) in our
setup.py
so users on older versions will get a clear error message.
- Improvements to make the rust transition a bit easier. This includes some better error messages and small dependency fixes. If you experience installation problems Be sure to update pip first, then check the :doc:`FAQ </faq>`.
- Fixed a circular import issue.
- Added additional debug output to assist users seeing installation errors
due to outdated
pip
or missingrustc
.
- BACKWARDS INCOMPATIBLE: Support for Python 2 has been removed.
- We now ship
manylinux2014
wheels and no longer shipmanylinux1
wheels. Users should upgrade to the latestpip
to ensure this doesn't cause issues downloading wheels on their platform. cryptography
now incorporates Rust code. Users buildingcryptography
themselves will need to have the Rust toolchain installed. Users who use an officially produced wheel will not need to make any changes. The minimum supported Rust version is 1.45.0.cryptography
now has PEP 484 type hints on nearly all of of its public APIs. Users can begin using them to type check their code withmypy
.
- 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.
- Re-added a legacy symbol causing problems for older
pyOpenSSL
users.
- 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 thanUnsupportedAlgorithm
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.
- Disable blinding on RSA public keys to address an error with some versions of OpenSSL.
- SECURITY ISSUE: Attempted to make RSA PKCS#1v1.5 decryption more constant time, to protect against Bleichenbacher vulnerabilities. Due to limitations imposed by our API, we cannot completely mitigate this vulnerability and a future release will contain a new API which is designed to be resilient to these for contexts where it is required. Credit to Hubert Kario for reporting the issue. CVE-2020-25659
- Support for OpenSSL 1.0.2 has been removed. Users on older version of OpenSSL will need to upgrade.
- Added basic support for PKCS7 signing (including SMIME) via :class:`~cryptography.hazmat.primitives.serialization.pkcs7.PKCS7SignatureBuilder`.
- Updated Windows, macOS, and
manylinux
wheels to be compiled with OpenSSL 1.1.1h.
- BACKWARDS INCOMPATIBLE: Removed support for
idna
based :term:`U-label` parsing in various X.509 classes. This support was originally deprecated in version 2.1 and moved to an extra in 2.5. - Deprecated OpenSSL 1.0.2 support. OpenSSL 1.0.2 is no longer supported by
the OpenSSL project. The next version of
cryptography
will drop support for it. - Deprecated support for Python 3.5. This version sees very little use and will be removed in the next release.
backend
arguments to functions are no longer required and the default backend will automatically be selected if nobackend
is provided.- Added initial support for parsing certificates from PKCS7 files with :func:`~cryptography.hazmat.primitives.serialization.pkcs7.load_pem_pkcs7_certificates` and :func:`~cryptography.hazmat.primitives.serialization.pkcs7.load_der_pkcs7_certificates` .
- Calling
update
orupdate_into
on :class:`~cryptography.hazmat.primitives.ciphers.CipherContext` withdata
longer than 231 bytes no longer raises anOverflowError
. This also resolves the same issue in :doc:`/fernet`.
BACKWARDS INCOMPATIBLE: Removed support for passing an :class:`~cryptography.x509.Extension` instance to :meth:`~cryptography.x509.AuthorityKeyIdentifier.from_issuer_subject_key_identifier`, as per our deprecation policy.
BACKWARDS INCOMPATIBLE: Support for LibreSSL 2.7.x, 2.8.x, and 2.9.0 has been removed (2.9.1+ is still supported).
BACKWARDS INCOMPATIBLE: Dropped support for macOS 10.9, macOS users must upgrade to 10.10 or newer.
BACKWARDS INCOMPATIBLE: RSA :meth:`~cryptography.hazmat.primitives.asymmetric.rsa.generate_private_key` no longer accepts
public_exponent
values except 65537 and 3 (the latter for legacy purposes).BACKWARDS INCOMPATIBLE: X.509 certificate parsing now enforces that the
version
field contains a valid value, rather than deferring this check until :attr:`~cryptography.x509.Certificate.version` is accessed.Deprecated support for Python 2. 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 no longer receives support from the Python core team.
If you have trouble suppressing this warning in tests view the :ref:`FAQ entry addressing this issue <faq-howto-handle-deprecation-warning>`.
Added support for
OpenSSH
serialization format forec
,ed25519
,rsa
anddsa
private keys: :func:`~cryptography.hazmat.primitives.serialization.load_ssh_private_key` for loading and :attr:`~cryptography.hazmat.primitives.serialization.PrivateFormat.OpenSSH` for writing.Added support for
OpenSSH
certificates to :func:`~cryptography.hazmat.primitives.serialization.load_ssh_public_key`.Added :meth:`~cryptography.fernet.Fernet.encrypt_at_time` and :meth:`~cryptography.fernet.Fernet.decrypt_at_time` to :class:`~cryptography.fernet.Fernet`.
Added support for the :class:`~cryptography.x509.SubjectInformationAccess` X.509 extension.
Added support for parsing :class:`~cryptography.x509.SignedCertificateTimestamps` in OCSP responses.
Added support for parsing attributes in certificate signing requests via
CertificateSigningRequest.get_attribute_for_oid
.Added support for encoding attributes in certificate signing requests via :meth:`~cryptography.x509.CertificateSigningRequestBuilder.add_attribute`.
On OpenSSL 1.1.1d and higher
cryptography
now uses OpenSSL's built-in CSPRNG instead of its own OS random engine because these versions of OpenSSL properly reseed on fork.Added initial support for creating PKCS12 files with :func:`~cryptography.hazmat.primitives.serialization.pkcs12.serialize_key_and_certificates`.
- Updated the macOS wheel to fix an issue where it would not run on macOS versions older than 10.15.
- Updated Windows, macOS, and
manylinux
wheels to be compiled with OpenSSL 1.1.1g.
- BACKWARDS INCOMPATIBLE: Support for Python 3.4 has been removed due to low usage and maintenance burden.
- BACKWARDS INCOMPATIBLE: Support for OpenSSL 1.0.1 has been removed. Users on older version of OpenSSL will need to upgrade.
- BACKWARDS INCOMPATIBLE: Support for LibreSSL 2.6.x has been removed.
- Removed support for calling
:meth:`~cryptography.hazmat.primitives.asymmetric.x25519.X25519PublicKey.public_bytes`
with no arguments, as per our deprecation policy. You must now pass
encoding
andformat
. - BACKWARDS INCOMPATIBLE: Reversed the order in which :meth:`~cryptography.x509.Name.rfc4514_string` returns the RDNs as required by RFC 4514.
- Updated Windows, macOS, and
manylinux
wheels to be compiled with OpenSSL 1.1.1f. - Added support for parsing :attr:`~cryptography.x509.ocsp.OCSPResponse.single_extensions` in an OCSP response.
- :class:`~cryptography.x509.NameAttribute` values can now be empty strings.
- Updated Windows, macOS, and
manylinux
wheels to be compiled with OpenSSL 1.1.1d. - Added support for Python 3.8.
- Added class methods :meth:`Poly1305.generate_tag <cryptography.hazmat.primitives.poly1305.Poly1305.generate_tag>` and :meth:`Poly1305.verify_tag <cryptography.hazmat.primitives.poly1305.Poly1305.verify_tag>` for Poly1305 sign and verify operations.
- Deprecated support for OpenSSL 1.0.1. Support will be removed in
cryptography
2.9. - We now ship
manylinux2010
wheels in addition to ourmanylinux1
wheels. - Added support for
ed25519
anded448
keys in the :class:`~cryptography.x509.CertificateBuilder`, :class:`~cryptography.x509.CertificateSigningRequestBuilder`, :class:`~cryptography.x509.CertificateRevocationListBuilder` and :class:`~cryptography.x509.ocsp.OCSPResponseBuilder`. cryptography
no longer depends onasn1crypto
.- :class:`~cryptography.x509.FreshestCRL` is now allowed as a :class:`~cryptography.x509.CertificateRevocationList` extension.
- BACKWARDS INCOMPATIBLE: We no longer distribute 32-bit
manylinux1
wheels. Continuing to produce them was a maintenance burden. - BACKWARDS INCOMPATIBLE: Removed the
cryptography.hazmat.primitives.mac.MACContext
interface. TheCMAC
andHMAC
APIs have not changed, but they are no longer registered asMACContext
instances. - Updated Windows, macOS, and
manylinux1
wheels to be compiled with OpenSSL 1.1.1c. - Removed support for running our tests with
setup.py test
. Users interested in running our tests can continue to follow the directions in our :doc:`development documentation</development/getting-started>`. - Add support for :class:`~cryptography.hazmat.primitives.poly1305.Poly1305` when using OpenSSL 1.1.1 or newer.
- Support serialization with
Encoding.OpenSSH
andPublicFormat.OpenSSH
in :meth:`Ed25519PublicKey.public_bytes <cryptography.hazmat.primitives.asymmetric.ed25519.Ed25519PublicKey.public_bytes>` . - Correctly allow passing a
SubjectKeyIdentifier
to :meth:`~cryptography.x509.AuthorityKeyIdentifier.from_issuer_subject_key_identifier` and deprecate passing anExtension
object. The documentation always requiredSubjectKeyIdentifier
but the implementation previously required anExtension
.
- Resolved an error in our build infrastructure that broke our Python3 wheels for macOS and Linux.
- BACKWARDS INCOMPATIBLE: Removed
cryptography.hazmat.primitives.asymmetric.utils.encode_rfc6979_signature
andcryptography.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.
- 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 theidna
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
cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers.encode_point
.
- Updated Windows, macOS, and
manylinux1
wheels to be compiled with OpenSSL 1.1.0j.
- Fixed a build breakage in our
manylinux1
wheels.
- 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`.
- Updated Windows, macOS, and
manylinux1
wheels to be compiled with OpenSSL 1.1.0i.
- 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. CVE-2018-10903 - 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 nextcryptography
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
.
- Updated Windows, macOS, and
manylinux1
wheels to be compiled with OpenSSL 1.1.0h.
- 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.
- 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
.
- Added
X509_up_ref
for an upcomingpyOpenSSL
release.
- Updated Windows, macOS, and
manylinux1
wheels to be compiled with OpenSSL 1.1.0g.
- Corrected a bug with the
manylinux1
wheels where OpenSSL's stack was marked executable.
- Fixed support for install with the system
pip
on Ubuntu 16.04.
- FINAL DEPRECATION Python 2.6 support is deprecated, and will be removed
in the next release of
cryptography
. - BACKWARDS INCOMPATIBLE:
Whirlpool
,RIPEMD160
, andUnsupportedExtension
have been removed in accordance with our :doc:`/api-stability` policy. - 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.
- Installing
cryptography
now requirespip
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.
- Fixed an issue with weak linking symbols when compiling on macOS versions older than 10.12.
- Marked all symbols as hidden in the
manylinux1
wheel to avoid a bug with symbol resolution in certain scenarios.
- 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 usinguwsgi
or other binaries that link against OpenSSL independently. - Fixed the stack level for the
signer
andverifier
warnings.
- 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 ofsign
. - 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 ofverify
. - 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 computedExtensions
object. There should be no performance change, just a performance improvement for programs accessing theextensions
attribute multiple times.
- 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
andRIPEMD160
have been deprecated.
- Fixed a compilation bug affecting OpenSSL 1.1.0f.
- Updated Windows and macOS wheels to be compiled against OpenSSL 1.1.0f.
- Fixed macOS wheels to properly link against 1.1.0 rather than 1.0.2.
- 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
toasn1crypto
resulting in a general performance increase when encoding/decoding ASN.1 structures. Also, thepyasn1_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.DHPrivateKey.private_bytes` to :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKey`.
- Added :meth:`~cryptography.hazmat.primitives.asymmetric.dh.DHPublicKey.public_bytes` to :class:`~cryptography.hazmat.primitives.asymmetric.dh.DHPublicKey`.
- :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`.
- Updated Windows and macOS wheels to be compiled against OpenSSL 1.0.2k.
- Fixed a regression in
int_from_bytes
where it failed to acceptbytearray
.
- 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 :meth:`~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKey.exchange`.
- 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.
- 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
andcx_freeze
. - Added support for generating a :meth:`~cryptography.x509.random_serial_number`.
- Added support for encoding
IPv4Network
andIPv6Network
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.
- SECURITY ISSUE: Fixed a bug where
HKDF
would return an empty byte-string if used with alength
less thanalgorithm.digest_size
. Credit to Markus Döring for reporting the issue. CVE-2016-9243
- Updated Windows and OS X wheels to be compiled against OpenSSL 1.0.2j.
- 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.
- 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.
- 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.
- Deprecated the
serial
attribute on :class:`~cryptography.x509.Certificate`, in favor of :attr:`~cryptography.x509.Certificate.serial_number`.
- Added another OpenSSL function to the bindings to support an upcoming
pyOpenSSL
release.
- Added two new OpenSSL functions to the bindings to support an upcoming
pyOpenSSL
release.
- 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.
- Fixed a bug that caused an
AttributeError
when usingmock
to patch somecryptography
modules.
- 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`.
- Updated Windows and OS X wheels to be compiled against OpenSSL 1.0.2g.
- Updated Windows and OS X wheels to be compiled against OpenSSL 1.0.2f.
- Reverts a change to an OpenSSL
EVP_PKEY
object that caused errors withpyOpenSSL
.
- 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:
- 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 to upgrade, as those versions no longer receive support from the OpenSSL 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:
- 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.
- 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.
- 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.
- 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
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 aPrintableString
when creating subject and issuer distinguished names with the Certificate and CSR builder classes.
- 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 fromassert
to a true function call. Credit Emilia Käsper (Google Security Team) for the report.
- 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+.
- 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:
- 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
anddecode_rfc6979_signature
in favor of :func:`~cryptography.hazmat.primitives.asymmetric.utils.encode_dss_signature` and :func:`~cryptography.hazmat.primitives.asymmetric.utils.decode_dss_signature`.
- Updated Windows wheels to be compiled against OpenSSL 1.0.2d.
- Updated Windows wheels to be compiled against OpenSSL 1.0.2c.
- 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.
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.RSAPublicKey`, :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey`, and :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey`.Support :attr:`~cryptography.hazmat.primitives.serialization.Encoding.DER` serialization of private keys using the
private_bytes
method of :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`, :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`, and :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey`.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
UnsupportedExtension
while unsupported extensions set to non-critical are silently ignored. Read the :doc:`X.509 documentation</x509/index>` for more information.
- Fixed a race condition when initializing the OpenSSL or CommonCrypto backends in a multi-threaded scenario.
- Updated Windows wheels to be compiled against OpenSSL 1.0.2a.
- :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
from
cryptography.hazmat.primitives.interfaces
to :mod:`~cryptography.hazmat.primitives.kdf`. - Added support for parsing X.509 names. See the :doc:`X.509 documentation</x509/index>` for more information.
- 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
EllipticCurvePrivateKeyWithSerialization
and deprecatedEllipticCurvePrivateKeyWithNumbers
. - Added :meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey.private_bytes` to :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey`.
- Added
RSAPrivateKeyWithSerialization
and deprecatedRSAPrivateKeyWithNumbers
. - Added :meth:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey.private_bytes` to :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`.
- Added
DSAPrivateKeyWithSerialization
and deprecatedDSAPrivateKeyWithNumbers
. - Added :meth:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey.private_bytes` to :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`.
- Added
RSAPublicKeyWithSerialization
and deprecatedRSAPublicKeyWithNumbers
. - Added
public_bytes
to :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey`. - Added
EllipticCurvePublicKeyWithSerialization
and deprecatedEllipticCurvePublicKeyWithNumbers
. - Added
public_bytes
to :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey`. - Added
DSAPublicKeyWithSerialization
and deprecatedDSAPublicKeyWithNumbers
. - Added
public_bytes
to :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey`. - :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm` and
:class:`~cryptography.hazmat.primitives.hashes.HashContext` were moved from
cryptography.hazmat.primitives.interfaces
to :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`
were moved from
cryptography.hazmat.primitives.interfaces
to :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`
were moved from
cryptography.hazmat.primitives.interfaces
to :mod:`~cryptography.hazmat.primitives.ciphers.modes`. - :class:`~cryptography.hazmat.primitives.padding.PaddingContext` was moved
from
cryptography.hazmat.primitives.interfaces
to :mod:`~cryptography.hazmat.primitives.padding`. - :class:`~cryptography.hazmat.primitives.asymmetric.padding.AsymmetricPadding`
was moved from
cryptography.hazmat.primitives.interfaces
to :mod:`~cryptography.hazmat.primitives.asymmetric.padding`. AsymmetricSignatureContext
andAsymmetricVerificationContext
were moved fromcryptography.hazmat.primitives.interfaces
tocryptography.hazmat.primitives.asymmetric
.- :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAParameters`,
DSAParametersWithNumbers
, :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey`,DSAPrivateKeyWithNumbers
, :class:`~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey` andDSAPublicKeyWithNumbers
were moved fromcryptography.hazmat.primitives.interfaces
to :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`,
EllipticCurvePrivateKeyWithNumbers
, :class:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey`, andEllipticCurvePublicKeyWithNumbers
were moved fromcryptography.hazmat.primitives.interfaces
to :mod:`~cryptography.hazmat.primitives.asymmetric.ec`. - :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`,
RSAPrivateKeyWithNumbers
, :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey` andRSAPublicKeyWithNumbers
were moved fromcryptography.hazmat.primitives.interfaces
to :mod:`~cryptography.hazmat.primitives.asymmetric.rsa`.
- 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.
- Fixed an issue preventing compilation on platforms where
OPENSSL_NO_SSL3
was defined.
- 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`.
- More bit-lengths are now supported for
p
andq
when loading DSA keys from numbers. - Added
MACContext
as a common interface for CMAC and HMAC and deprecatedCMACContext
. - 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 :doc:`X.509 documentation</x509/index>` for more information.
- 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.
- 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. Thesalt_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
andelliptic_curve_public_key_from_numbers
in favor ofload_elliptic_curve_private_numbers
andload_elliptic_curve_public_numbers
onEllipticCurveBackend
. - Added
EllipticCurvePrivateKeyWithNumbers
andEllipticCurvePublicKeyWithNumbers
support. - 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.
- Added several functions to the OpenSSL bindings to support new functionality in pyOpenSSL.
- Fixed a redefined constant causing compilation failure with Solaris 11.2.
- Updated Windows wheels to be compiled against OpenSSL 1.0.1i.
- Add
TraditionalOpenSSLSerializationBackend
support tomultibackend
. - Fix compilation error on OS X 10.8 (Mountain Lion).
- Add
PKCS8SerializationBackend
support tomultibackend
.
- 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 themin_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
commoncrypto
andopenssl
. - Added
AES
:class:`~cryptography.hazmat.primitives.ciphers.modes.CTR` support to the OpenSSL backend when linked against 0.9.8. - Added
PKCS8SerializationBackend
andTraditionalOpenSSLSerializationBackend
support toopenssl
. - Added :doc:`/hazmat/primitives/asymmetric/ec` and
EllipticCurveBackend
. - Added :class:`~cryptography.hazmat.primitives.ciphers.modes.ECB` support
for :class:`~cryptography.hazmat.primitives.ciphers.algorithms.TripleDES` on
commoncrypto
andopenssl
. - 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. - Deprecated
encrypt_rsa
,decrypt_rsa
,create_rsa_signature_ctx
andcreate_rsa_verification_ctx
onRSABackend
. - Deprecated
create_dsa_signature_ctx
andcreate_dsa_verification_ctx
onDSABackend
.
- Deprecated
salt_length
on :class:`~cryptography.hazmat.primitives.asymmetric.padding.MGF1` and added it to :class:`~cryptography.hazmat.primitives.asymmetric.padding.PSS`. It will be removed fromMGF1
in two releases per our :doc:`/api-stability` policy. - Added :class:`~cryptography.hazmat.primitives.ciphers.algorithms.SEED` support.
- 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`.
- Added :class:`~cryptography.hazmat.primitives.twofactor.hotp.HOTP`.
- Added :class:`~cryptography.hazmat.primitives.twofactor.totp.TOTP`.
- Added :class:`~cryptography.hazmat.primitives.ciphers.algorithms.IDEA` support.
- Added signature support to :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey` and verification support to :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey`.
- Moved test vectors to the new
cryptography_vectors
package.
- Removed a constant definition that was causing compilation problems with specific versions of OpenSSL.
- Fix a bug where importing cryptography from multiple paths could cause initialization to fail.
- Added
commoncrypto
. - Added initial
commoncrypto
. - Removed
register_cipher_adapter
method fromCipherBackend
. - 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`.
- Added
multibackend
. - Set default random for
openssl
to the OS random engine. - Added :class:`~cryptography.hazmat.primitives.ciphers.algorithms.CAST5` (CAST-128) support.
- Initial release.