Note
This version is not yet released and is under active development.
- BACKWARDS INCOMPATIBLE: Support for Python 3.5 has been removed due to low usage and maintenance burden.
- BACKWARDS INCOMPATIBLE: The
~cryptography.hazmat.primitives.ciphers.modes.GCM
and~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
~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey.recover_data_from_signature
function to~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
~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
basedU-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
~cryptography.hazmat.primitives.serialization.pkcs7.load_pem_pkcs7_certificates
and~cryptography.hazmat.primitives.serialization.pkcs7.load_der_pkcs7_certificates
. - Calling
update
orupdate_into
on~cryptography.hazmat.primitives.ciphers.CipherContext
withdata
longer than 231 bytes no longer raises anOverflowError
. This also resolves the same issue in/fernet
.
- BACKWARDS INCOMPATIBLE: Removed support for passing an
~cryptography.x509.Extension
instance to~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
~cryptography.hazmat.primitives.asymmetric.rsa.generate_private_key
no longer acceptspublic_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~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
FAQ entry addressing this issue <faq-howto-handle-deprecation-warning>
.- Added support for
OpenSSH
serialization format forec
,ed25519
,rsa
anddsa
private keys:~cryptography.hazmat.primitives.serialization.load_ssh_private_key
for loading and~cryptography.hazmat.primitives.serialization.PrivateFormat.OpenSSH
for writing. - Added support for
OpenSSH
certificates to~cryptography.hazmat.primitives.serialization.load_ssh_public_key
. - Added
~cryptography.fernet.Fernet.encrypt_at_time
and~cryptography.fernet.Fernet.decrypt_at_time
to~cryptography.fernet.Fernet
. - Added support for the
~cryptography.x509.SubjectInformationAccess
X.509 extension. - Added support for parsing
~cryptography.x509.SignedCertificateTimestamps
in OCSP responses. - Added support for parsing attributes in certificate signing requests via
~cryptography.x509.CertificateSigningRequest.get_attribute_for_oid
. - Added support for encoding attributes in certificate signing requests via
~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
~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
~cryptography.hazmat.primitives.asymmetric.x25519.X25519PublicKey.public_bytes
with no arguments, as per our deprecation policy. You must now passencoding
andformat
. - BACKWARDS INCOMPATIBLE: Reversed the order in which
~cryptography.x509.Name.rfc4514_string
returns the RDNs as required by4514
. - Updated Windows, macOS, and
manylinux
wheels to be compiled with OpenSSL 1.1.1f. - Added support for parsing
~cryptography.x509.ocsp.OCSPResponse.single_extensions
in an OCSP response. ~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
Poly1305.generate_tag <cryptography.hazmat.primitives.poly1305.Poly1305.generate_tag>
andPoly1305.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~cryptography.x509.CertificateBuilder
,~cryptography.x509.CertificateSigningRequestBuilder
,~cryptography.x509.CertificateRevocationListBuilder
and~cryptography.x509.ocsp.OCSPResponseBuilder
. cryptography
no longer depends onasn1crypto
.~cryptography.x509.FreshestCRL
is now allowed as a~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 ourdevelopment documentation</development/getting-started>
. - Add support for
~cryptography.hazmat.primitives.poly1305.Poly1305
when using OpenSSL 1.1.1 or newer. - Support serialization with
Encoding.OpenSSH
andPublicFormat.OpenSSH
inEd25519PublicKey.public_bytes <cryptography.hazmat.primitives.asymmetric.ed25519.Ed25519PublicKey.public_bytes>
. - Correctly allow passing a
SubjectKeyIdentifier
to~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~cryptography.hazmat.primitives.asymmetric.utils.encode_dss_signature
and~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~cryptography.x509.Certificate.serial_number
instead. - Updated Windows, macOS, and
manylinux1
wheels to be compiled with OpenSSL 1.1.1b. - Added support for
/hazmat/primitives/asymmetric/ed448
when using OpenSSL 1.1.1b or newer. - Added support for
/hazmat/primitives/asymmetric/ed25519
when using OpenSSL 1.1.1b or newer. ~cryptography.hazmat.primitives.serialization.load_ssh_public_key
can now loaded25519
public keys.- Add support for easily mapping an object identifier to its elliptic curve class via
~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:
U-label
strings were deprecated in version 2.1, but this version removes the defaultidna
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
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
~cryptography.hazmat.primitives.hashes.SHA512_224
and~cryptography.hazmat.primitives.hashes.SHA512_256
when using OpenSSL 1.1.1. - Added support for
~cryptography.hazmat.primitives.hashes.SHA3_224
,~cryptography.hazmat.primitives.hashes.SHA3_256
,~cryptography.hazmat.primitives.hashes.SHA3_384
, and~cryptography.hazmat.primitives.hashes.SHA3_512
when using OpenSSL 1.1.1. - Added support for
/hazmat/primitives/asymmetric/x448
when using OpenSSL 1.1.1. - Added support for
~cryptography.hazmat.primitives.hashes.SHAKE128
and~cryptography.hazmat.primitives.hashes.SHAKE256
when using OpenSSL 1.1.1. - Added initial support for parsing PKCS12 files with
~cryptography.hazmat.primitives.serialization.pkcs12.load_key_and_certificates
. - Added support for
~cryptography.x509.IssuingDistributionPoint
. - Added
rfc4514_string()
method tox509.Name <cryptography.x509.Name.rfc4514_string>
,x509.RelativeDistinguishedName <cryptography.x509.RelativeDistinguishedName.rfc4514_string>
, andx509.NameAttribute <cryptography.x509.NameAttribute.rfc4514_string>
to format the name or component an4514
Distinguished Name string. - Added
~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~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers.from_encoded_point
. - Added
~cryptography.x509.ocsp.OCSPResponse.signature_hash_algorithm
toOCSPResponse
. - Updated
/hazmat/primitives/asymmetric/x25519
support to allow additional serialization methods. Calling~cryptography.hazmat.primitives.asymmetric.x25519.X25519PublicKey.public_bytes
with no arguments has been deprecated. - Added support for encoding compressed and uncompressed points via
~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
OCSP </x509/ocsp>
support. - Added support for
~cryptography.x509.PrecertPoison
.
- Updated Windows, macOS, and
manylinux1
wheels to be compiled with OpenSSL 1.1.0i.
- SECURITY ISSUE:
~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 themin_tag_length
provided to the~cryptography.hazmat.primitives.ciphers.modes.GCM
constructor. CVE-2018-10903 - Added support for Python 3.7.
- Added
~cryptography.fernet.Fernet.extract_timestamp
to get the authenticated timestamp of aFernet </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
~cryptography.x509.CertificateRevocationList.get_revoked_certificate_by_serial_number
for quick serial number searches in CRLs. - The
~cryptography.x509.RelativeDistinguishedName
class now preserves the order of attributes. Duplicate attributes now raise an error instead of silently discarding duplicates. ~cryptography.hazmat.primitives.keywrap.aes_key_unwrap
and~cryptography.hazmat.primitives.keywrap.aes_key_unwrap_with_padding
now raise~cryptography.hazmat.primitives.keywrap.InvalidUnwrap
if the wrapped key is an invalid length, instead ofValueError
.
- 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
~cryptography.hazmat.primitives.keywrap.aes_key_unwrap_with_padding
that caused it to raiseInvalidUnwrap
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
~cryptography.hazmat.primitives.asymmetric.ec.BrainpoolP256R1
,~cryptography.hazmat.primitives.asymmetric.ec.BrainpoolP384R1
, and~cryptography.hazmat.primitives.asymmetric.ec.BrainpoolP512R1
to support inter-operating with systems like German smart meters. - Added token rotation support to
Fernet </fernet>
with~cryptography.fernet.MultiFernet.rotate
. - Fixed a memory leak in
~cryptography.hazmat.primitives.asymmetric.ec.derive_private_key
. - Added support for AES key wrapping with padding via
~cryptography.hazmat.primitives.keywrap.aes_key_wrap_with_padding
and~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/api-stability
policy. - BACKWARDS INCOMPATIBLE:
DNSName.value <cryptography.x509.DNSName.value>
,RFC822Name.value <cryptography.x509.RFC822Name.value>
, andUniformResourceIdentifier.value <cryptography.x509.UniformResourceIdentifier.value>
will now return anA-label
string when parsing a certificate containing an internationalized domain name (IDN) or if the caller passed aU-label
to the constructor. See below for additional deprecations related to this change. - Installing
cryptography
now requirespip
6 or newer. - Deprecated passing
U-label
strings to the~cryptography.x509.DNSName
,~cryptography.x509.UniformResourceIdentifier
, and~cryptography.x509.RFC822Name
constructors. Instead, users should pass values asA-label
strings withidna
encoding if necessary. This change will not affect anyone who is not processing internationalized domains. - Added support for
~cryptography.hazmat.primitives.ciphers.algorithms.ChaCha20
. In most cases users should choose~cryptography.hazmat.primitives.ciphers.aead.ChaCha20Poly1305
rather than using this unauthenticated form. - Added
~cryptography.x509.CertificateRevocationList.is_signature_valid
to~cryptography.x509.CertificateRevocationList
. - Support
~cryptography.hazmat.primitives.hashes.BLAKE2b
and~cryptography.hazmat.primitives.hashes.BLAKE2s
with~cryptography.hazmat.primitives.hmac.HMAC
. - Added support for
~cryptography.hazmat.primitives.ciphers.modes.XTS
mode for AES. - Added support for using labels with
~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
~cryptography.x509.DeltaCRLIndicator
extension. - Add support for the
~cryptography.x509.TLSFeature
extension. This is commonly used for enablingOCSP Must-Staple
in certificates. - Add support for the
~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~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey
,~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey
, and~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey
in favor ofsign
. - Deprecated the use of
verifier
on~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey
,~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey
, and~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey
in favor ofverify
. - Added support for parsing
~cryptography.x509.certificate_transparency.SignedCertificateTimestamp
objects from X.509 certificate extensions. - Added support for
~cryptography.hazmat.primitives.ciphers.aead.ChaCha20Poly1305
. - Added support for
~cryptography.hazmat.primitives.ciphers.aead.AESCCM
. - Added
~cryptography.hazmat.primitives.ciphers.aead.AESGCM
, a "one shot" API for AES GCM encryption. - Added support for
/hazmat/primitives/asymmetric/x25519
. - Added support for serializing and deserializing Diffie-Hellman parameters with
~cryptography.hazmat.primitives.serialization.load_pem_parameters
,~cryptography.hazmat.primitives.serialization.load_der_parameters
, and~cryptography.hazmat.primitives.asymmetric.dh.DHParameters.parameter_bytes
. - The
extensions
attribute on~cryptography.x509.Certificate
,~cryptography.x509.CertificateSigningRequest
,~cryptography.x509.CertificateRevocationList
, and~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~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.verify
has always been to check whether or not~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~cryptography.hazmat.primitives.ciphers.modes.GCM
finalization via~cryptography.hazmat.primitives.ciphers.AEADDecryptionContext.finalize_with_tag
. - Fixed an issue preventing
cryptography
from compiling against LibreSSL 2.5.x. - Added
~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.key_size
and~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~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
~cryptography.hazmat.primitives.ciphers.CipherContext.update_into
on~cryptography.hazmat.primitives.ciphers.CipherContext
. - Added
~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKeyWithSerialization.private_bytes
to~cryptography.hazmat.primitives.asymmetric.dh.DHPrivateKeyWithSerialization
. - Added
~cryptography.hazmat.primitives.asymmetric.dh.DHPublicKey.public_bytes
to~cryptography.hazmat.primitives.asymmetric.dh.DHPublicKey
. ~cryptography.hazmat.primitives.serialization.load_pem_private_key
and~cryptography.hazmat.primitives.serialization.load_der_private_key
now require thatpassword
must be bytes if provided. Previously this was documented but not enforced.- Added support for subgroup order in
/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
~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
~cryptography.hazmat.primitives.hashes.BLAKE2b
and~cryptography.hazmat.primitives.hashes.BLAKE2s
when using OpenSSL 1.1.0. - Added
~cryptography.x509.Certificate.signature_algorithm_oid
support to~cryptography.x509.Certificate
. - Added
~cryptography.x509.CertificateSigningRequest.signature_algorithm_oid
support to~cryptography.x509.CertificateSigningRequest
. - Added
~cryptography.x509.CertificateRevocationList.signature_algorithm_oid
support to~cryptography.x509.CertificateRevocationList
. - Added support for
~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
~cryptography.x509.random_serial_number
. - Added support for encoding
IPv4Network
andIPv6Network
in X.509 certificates for use with~cryptography.x509.NameConstraints
. - Added
~cryptography.x509.Name.public_bytes
to~cryptography.x509.Name
. - Added
~cryptography.x509.RelativeDistinguishedName
~cryptography.x509.DistributionPoint
now accepts~cryptography.x509.RelativeDistinguishedName
for~cryptography.x509.DistributionPoint.relative_name
. Deprecated use of~cryptography.x509.Name
as~cryptography.x509.DistributionPoint.relative_name
.~cryptography.x509.Name
now accepts an iterable of~cryptography.x509.RelativeDistinguishedName
. RDNs can be accessed via the~cryptography.x509.Name.rdns
attribute. When constructed with an iterable of~cryptography.x509.NameAttribute
, each attribute becomes a single-valued RDN.- Added
~cryptography.hazmat.primitives.asymmetric.ec.derive_private_key
. - Added support for signing and verifying RSA, DSA, and ECDSA signatures with
~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
~cryptography.hazmat.primitives.asymmetric.padding.calculate_max_pss_salt_length
. - Added "one shot"
~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey.sign
and~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey.verify
methods to DSA keys. - Added "one shot"
~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey.sign
and~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.
~cryptography.x509.CertificateBuilder
,~cryptography.x509.CertificateRevocationListBuilder
, and~cryptography.x509.RevokedCertificateBuilder
now accept timezone awaredatetime
objects as method argumentscryptography
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
~cryptography.hazmat.primitives.kdf.kbkdf.KBKDFHMAC
. - Added support for
OpenSSH
public key serialization. - Added support for SHA-2 in RSA
~cryptography.hazmat.primitives.asymmetric.padding.OAEP
when using OpenSSL 1.0.2 or greater. - Added "one shot"
~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey.sign
and~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey.verify
methods to RSA keys. - Deprecated the
serial
attribute on~cryptography.x509.Certificate
, in favor of~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
~cryptography.hazmat.primitives.padding.ANSIX923
. - Deprecated support for OpenSSL 0.9.8. Support will be removed in
cryptography
1.4. - Added support for the
~cryptography.x509.PolicyConstraints
X.509 extension including both parsing and generation using~cryptography.x509.CertificateBuilder
and~cryptography.x509.CertificateSigningRequestBuilder
. - Added
~cryptography.x509.CertificateSigningRequest.is_signature_valid
to~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
~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:
~cryptography.x509.RevokedCertificate
~cryptography.x509.RevokedCertificate.extensions
now uses extension classes rather than returning raw values inside the~cryptography.x509.Extension
~cryptography.x509.Extension.value
. The new classes are:~cryptography.x509.CertificateIssuer
~cryptography.x509.CRLReason
~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 to upgrade, as those versions no longer receive support from the OpenSSL project.
- The
~cryptography.x509.Certificate
class now has~cryptography.x509.Certificate.signature
and~cryptography.x509.Certificate.tbs_certificate_bytes
attributes. - The
~cryptography.x509.CertificateSigningRequest
class now has~cryptography.x509.CertificateSigningRequest.signature
and~cryptography.x509.CertificateSigningRequest.tbs_certrequest_bytes
attributes. - The
~cryptography.x509.CertificateRevocationList
class now has~cryptography.x509.CertificateRevocationList.signature
and~cryptography.x509.CertificateRevocationList.tbs_certlist_bytes
attributes. ~cryptography.x509.NameConstraints
are now supported in the~cryptography.x509.CertificateBuilder
and~cryptography.x509.CertificateSigningRequestBuilder
.- Support serialization of certificate revocation lists using the
~cryptography.x509.CertificateRevocationList.public_bytes
method of~cryptography.x509.CertificateRevocationList
. - Add support for parsing
~cryptography.x509.CertificateRevocationList
~cryptography.x509.CertificateRevocationList.extensions
in the OpenSSL backend. The following extensions are currently supported:~cryptography.x509.AuthorityInformationAccess
~cryptography.x509.AuthorityKeyIdentifier
~cryptography.x509.CRLNumber
~cryptography.x509.IssuerAlternativeName
- Added
~cryptography.x509.CertificateRevocationListBuilder
and~cryptography.x509.RevokedCertificateBuilder
to allow creation of CRLs. - Unrecognized non-critical X.509 extensions are now parsed into an
~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
~cryptography.hazmat.primitives.asymmetric.ec.ECDH
. - Added
~cryptography.hazmat.primitives.kdf.x963kdf.X963KDF
. - Added support for parsing certificate revocation lists (CRLs) using
~cryptography.x509.load_pem_x509_crl
and~cryptography.x509.load_der_x509_crl
. - Add support for AES key wrapping with
~cryptography.hazmat.primitives.keywrap.aes_key_wrap
and~cryptography.hazmat.primitives.keywrap.aes_key_unwrap
. - Added a
__hash__
method to~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~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers.from_encoded_point
. - Added
~cryptography.x509.Extensions.get_extension_for_class
. ~cryptography.x509.CertificatePolicies
are now supported in the~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
/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~cryptography.x509.CertificateSigningRequest
. - Support serialization of certificates using the
public_bytes
method of~cryptography.x509.Certificate
. - Add
get_provisioning_uri
method to~cryptography.hazmat.primitives.twofactor.hotp.HOTP
and~cryptography.hazmat.primitives.twofactor.totp.TOTP
for generating provisioning URIs. - Add
~cryptography.hazmat.primitives.kdf.concatkdf.ConcatKDFHash
and~cryptography.hazmat.primitives.kdf.concatkdf.ConcatKDFHMAC
. - Raise a
TypeError
when passing objects that are not text as the value to~cryptography.x509.NameAttribute
. - Add support for
~cryptography.x509.OtherName
as a general name type. - Added new X.509 extension support in
~cryptography.x509.Certificate
The following new extensions are now supported:~cryptography.x509.OCSPNoCheck
~cryptography.x509.InhibitAnyPolicy
~cryptography.x509.IssuerAlternativeName
~cryptography.x509.NameConstraints
- Extension support was added to
~cryptography.x509.CertificateSigningRequest
. - Add support for creating signed certificates with
~cryptography.x509.CertificateBuilder
. This includes support for the following extensions:~cryptography.x509.BasicConstraints
~cryptography.x509.SubjectAlternativeName
~cryptography.x509.KeyUsage
~cryptography.x509.ExtendedKeyUsage
~cryptography.x509.SubjectKeyIdentifier
~cryptography.x509.AuthorityKeyIdentifier
~cryptography.x509.AuthorityInformationAccess
~cryptography.x509.CRLDistributionPoints
~cryptography.x509.InhibitAnyPolicy
~cryptography.x509.IssuerAlternativeName
~cryptography.x509.OCSPNoCheck
- Add support for creating certificate signing requests with
~cryptography.x509.CertificateSigningRequestBuilder
. This includes support for the same extensions supported in theCertificateBuilder
. - Deprecate
encode_rfc6979_signature
anddecode_rfc6979_signature
in favor of~cryptography.hazmat.primitives.asymmetric.utils.encode_dss_signature
and~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
~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
~cryptography.hazmat.primitives.serialization.Encoding.DER
serialization of public keys using thepublic_bytes
method of~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKeyWithSerialization
,~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKeyWithSerialization
, and~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKeyWithSerialization
. - Support
~cryptography.hazmat.primitives.serialization.Encoding.DER
serialization of private keys using theprivate_bytes
method of~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKeyWithSerialization
,~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKeyWithSerialization
, and~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKeyWithSerialization
. - Add support for parsing X.509 certificate signing requests (CSRs) with
~cryptography.x509.load_pem_x509_csr
and~cryptography.x509.load_der_x509_csr
. - Moved
cryptography.exceptions.InvalidToken
tocryptography.hazmat.primitives.twofactor.InvalidToken
and deprecated the old location. This was moved to minimize confusion between this exception andcryptography.fernet.InvalidToken
. Added support for X.509 extensions in
~cryptography.x509.Certificate
objects. The following extensions are supported as of this release:~cryptography.x509.BasicConstraints
~cryptography.x509.AuthorityKeyIdentifier
~cryptography.x509.SubjectKeyIdentifier
~cryptography.x509.KeyUsage
~cryptography.x509.SubjectAlternativeName
~cryptography.x509.ExtendedKeyUsage
~cryptography.x509.CRLDistributionPoints
~cryptography.x509.AuthorityInformationAccess
~cryptography.x509.CertificatePolicies
Note that unsupported extensions with the critical flag raise
UnsupportedExtension
while unsupported extensions set to non-critical are silently ignored. Read theX.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.
~cryptography.hazmat.primitives.serialization.load_ssh_public_key
can now load elliptic curve public keys.- Added
~cryptography.x509.Certificate.signature_hash_algorithm
support to~cryptography.x509.Certificate
. - Added
~cryptography.hazmat.primitives.asymmetric.rsa.rsa_recover_prime_factors
~cryptography.hazmat.primitives.kdf.KeyDerivationFunction
was moved fromcryptography.hazmat.primitives.interfaces
to~cryptography.hazmat.primitives.kdf
.- Added support for parsing X.509 names. See the
X.509 documentation</x509/index>
for more information. - Added
~cryptography.hazmat.primitives.serialization.load_der_private_key
to support loading of DER encoded private keys and~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.
~cryptography.hazmat.primitives.serialization.load_pem_public_key
and~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
~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKeyWithSerialization
and deprecatedEllipticCurvePrivateKeyWithNumbers
. - Added
~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKeyWithSerialization.private_bytes
to~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKeyWithSerialization
. - Added
~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKeyWithSerialization
and deprecatedRSAPrivateKeyWithNumbers
. - Added
~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKeyWithSerialization.private_bytes
to~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKeyWithSerialization
. - Added
~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKeyWithSerialization
and deprecatedDSAPrivateKeyWithNumbers
. - Added
~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKeyWithSerialization.private_bytes
to~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKeyWithSerialization
. - Added
~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKeyWithSerialization
and deprecatedRSAPublicKeyWithNumbers
. - Added
public_bytes
to~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKeyWithSerialization
. - Added
~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKeyWithSerialization
and deprecatedEllipticCurvePublicKeyWithNumbers
. - Added
public_bytes
to~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKeyWithSerialization
. - Added
~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKeyWithSerialization
and deprecatedDSAPublicKeyWithNumbers
. - Added
public_bytes
to~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKeyWithSerialization
. ~cryptography.hazmat.primitives.hashes.HashAlgorithm
and~cryptography.hazmat.primitives.hashes.HashContext
were moved fromcryptography.hazmat.primitives.interfaces
to~cryptography.hazmat.primitives.hashes
.~cryptography.hazmat.primitives.ciphers.CipherContext
,~cryptography.hazmat.primitives.ciphers.AEADCipherContext
,~cryptography.hazmat.primitives.ciphers.AEADEncryptionContext
,~cryptography.hazmat.primitives.ciphers.CipherAlgorithm
, and~cryptography.hazmat.primitives.ciphers.BlockCipherAlgorithm
were moved fromcryptography.hazmat.primitives.interfaces
to~cryptography.hazmat.primitives.ciphers
.~cryptography.hazmat.primitives.ciphers.modes.Mode
,~cryptography.hazmat.primitives.ciphers.modes.ModeWithInitializationVector
,~cryptography.hazmat.primitives.ciphers.modes.ModeWithNonce
, and~cryptography.hazmat.primitives.ciphers.modes.ModeWithAuthenticationTag
were moved fromcryptography.hazmat.primitives.interfaces
to~cryptography.hazmat.primitives.ciphers.modes
.~cryptography.hazmat.primitives.padding.PaddingContext
was moved fromcryptography.hazmat.primitives.interfaces
to~cryptography.hazmat.primitives.padding
.~cryptography.hazmat.primitives.asymmetric.padding.AsymmetricPadding
was moved fromcryptography.hazmat.primitives.interfaces
to~cryptography.hazmat.primitives.asymmetric.padding
.AsymmetricSignatureContext
andAsymmetricVerificationContext
were moved fromcryptography.hazmat.primitives.interfaces
tocryptography.hazmat.primitives.asymmetric
.~cryptography.hazmat.primitives.asymmetric.dsa.DSAParameters
,~cryptography.hazmat.primitives.asymmetric.dsa.DSAParametersWithNumbers
,~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey
,DSAPrivateKeyWithNumbers
,~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey
andDSAPublicKeyWithNumbers
were moved fromcryptography.hazmat.primitives.interfaces
to~cryptography.hazmat.primitives.asymmetric.dsa
~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurve
,~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurveSignatureAlgorithm
,~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey
,EllipticCurvePrivateKeyWithNumbers
,~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey
, andEllipticCurvePublicKeyWithNumbers
were moved fromcryptography.hazmat.primitives.interfaces
to~cryptography.hazmat.primitives.asymmetric.ec
.~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey
,RSAPrivateKeyWithNumbers
,~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey
andRSAPublicKeyWithNumbers
were moved fromcryptography.hazmat.primitives.interfaces
to~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
Fernet </fernet>
with~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
6979
signatures in/hazmat/primitives/asymmetric/utils
. - Added
~cryptography.hazmat.primitives.serialization.load_ssh_public_key
to support the loading of OpenSSH public keys (4253
). Only RSA and DSA keys are currently supported. - Added initial support for X.509 certificate parsing. See the
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
~cryptography.hazmat.primitives.serialization.load_pem_private_key
to ease loading private keys, and~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~cryptography.hazmat.primitives.asymmetric.padding.MGF1
constructor. Thesalt_length
should be passed to~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
on~cryptography.hazmat.backends.interfaces.EllipticCurveBackend
. - 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:
~cryptography.hazmat.primitives.ciphers.modes.GCM
no longer allows truncation of tags by default. Previous versions ofcryptography
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
/installation
for more details. - Added
~cryptography.hazmat.primitives.kdf.hkdf.HKDFExpand
. - Added
~cryptography.hazmat.primitives.ciphers.modes.CFB8
support for~cryptography.hazmat.primitives.ciphers.algorithms.AES
and~cryptography.hazmat.primitives.ciphers.algorithms.TripleDES
oncommoncrypto
and/hazmat/backends/openssl
. - Added
AES
~cryptography.hazmat.primitives.ciphers.modes.CTR
support to the OpenSSL backend when linked against 0.9.8. - Added
PKCS8SerializationBackend
andTraditionalOpenSSLSerializationBackend
support to the/hazmat/backends/openssl
. - Added
/hazmat/primitives/asymmetric/ec
and~cryptography.hazmat.backends.interfaces.EllipticCurveBackend
. - Added
~cryptography.hazmat.primitives.ciphers.modes.ECB
support for~cryptography.hazmat.primitives.ciphers.algorithms.TripleDES
oncommoncrypto
and/hazmat/backends/openssl
. - Deprecated the concrete
RSAPrivateKey
class in favor of backend specific providers of thecryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey
interface. - Deprecated the concrete
RSAPublicKey
in favor of backend specific providers of thecryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey
interface. - Deprecated the concrete
DSAPrivateKey
class in favor of backend specific providers of thecryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey
interface. - Deprecated the concrete
DSAPublicKey
class in favor of backend specific providers of thecryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey
interface. - Deprecated the concrete
DSAParameters
class in favor of backend specific providers of thecryptography.hazmat.primitives.asymmetric.dsa.DSAParameters
interface. - Deprecated
encrypt_rsa
,decrypt_rsa
,create_rsa_signature_ctx
andcreate_rsa_verification_ctx
on~cryptography.hazmat.backends.interfaces.RSABackend
. - Deprecated
create_dsa_signature_ctx
andcreate_dsa_verification_ctx
on~cryptography.hazmat.backends.interfaces.DSABackend
.
- Deprecated
salt_length
on~cryptography.hazmat.primitives.asymmetric.padding.MGF1
and added it to~cryptography.hazmat.primitives.asymmetric.padding.PSS
. It will be removed fromMGF1
in two releases per our/api-stability
policy. - Added
~cryptography.hazmat.primitives.ciphers.algorithms.SEED
support. - Added
~cryptography.hazmat.primitives.cmac.CMAC
. - Added decryption support to
~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey
and encryption support to~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey
. - Added signature support to
~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey
and verification support to~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey
.
- Added
~cryptography.hazmat.primitives.twofactor.hotp.HOTP
. - Added
~cryptography.hazmat.primitives.twofactor.totp.TOTP
. - Added
~cryptography.hazmat.primitives.ciphers.algorithms.IDEA
support. - Added signature support to
~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey
and verification support to~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 from~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
~cryptography.hazmat.primitives.kdf.pbkdf2.PBKDF2HMAC
. - Added
~cryptography.hazmat.primitives.kdf.hkdf.HKDF
. - Added
multibackend
. - Set default random for the
/hazmat/backends/openssl
to the OS random engine. - Added
~cryptography.hazmat.primitives.ciphers.algorithms.CAST5
(CAST-128) support.
- Initial release.