[Security] Bump cryptography from 2.7 to 3.2

[dependabot-preview]

Bumps cryptography from 2.7 to 3.2.

Changelog

Sourced from cryptography's changelog.

3.2 - 2020-10-25

• 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.

3.1.1 - 2020-09-22

• Updated Windows, macOS, and manylinux wheels to be compiled with OpenSSL 1.1.1h.

3.1 - 2020-08-26

• BACKWARDS INCOMPATIBLE: Removed support for idna based 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 no backend 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 or update_into on ~cryptography.hazmat.primitives.ciphers.CipherContext with data longer than 2^31^ bytes no longer raises an OverflowError. This also resolves the same issue in /fernet.

3.0 - 2020-07-20

• 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 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 ~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 for ec, ed25519, rsa and dsa 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.

2.9.2 - 2020-04-22

• Updated the macOS wheel to fix an issue where it would not run on macOS versions older than 10.15.

Commits

• c9e6522 3.2 release (#5508)
• 58494b4 Attempt to mitigate Bleichenbacher attacks on RSA decryption (#5507)
• cf9bd6a move blinding to init on both RSA public and private (#5506)
• bf4b962 be more verbose in the 102 deprecation notice (#5505)
• ada53e7 make the regexes for branches more strict (#5504)
• 8be1d4b Stop using @master for GH actions (#5503)
• 08a97cc Bump actions/upload-artifact from v1 to v2.2.0 (#5502)
• 52a0e44 Add a dependabot configuration to bump our github actions (#5501)
• 611c4a3 PKCS7SignatureBuilder now supports new option NoCerts when signing (#5500)
• 836a92a chunking didn't actually work (#5499)
• Additional commits viewable in compare view

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[dependabot-preview]

We've just been alerted that this update fixes a security vulnerability:

Sourced from The GitHub Security Advisory Database.

RSA decryption vulnerable to Bleichenbacher timing vulnerability

Impact

RSA decryption was vulnerable to Bleichenbacher timing vulnerabilities, which would impact people using RSA decryption in online scenarios.

Patches

This is fixed in cryptography 3.2. pyca/cryptography@58494b4 is the resolving commit.

Affected versions: ["< 3.2"]