4.0.6 -- 2026-05-07

Fixes

• fix: Replace isinstance metaclass check with issubclass in generate_ecc_signing_key #802
• fix: use issubclass instead of isinstance in _set_signature_type #800

3.3.1 -- 2026-04-20

Fixes

• fix: validate encryption materials from cmm are compatible with key commitment policy #796

4.0.5 -- 2026-04-20

Fixes

• fix: validate encryption materials from cmm are compatible with key commitment policy #795

4.0.4 -- 2026-02-26

Maintenance

• deps: Extend supported MPL_ versions to include v1.11.2 #788

  MPL v1.11.2 fixes de-serializing Error_OpaqueWithText and bumps cryptography upperbound to <47 due to CVE-2026-26007 (#1800)

NOTE

This library is NOT impacted by CVE-2026-26007. This library does not use SECT curves.

4.0.3 -- 2025-09-03

Maintenance

• deps: Extend supported MPL versions to include v1.11.1 #770

  MPL v1.11.1 updates pytz version range to include 2025 releases.

4.0.2 -- 2025-06-30

Maintenance

• deps: Extend supported MPL versions to include v1.11.0. (#763)

  MPL v1.11.0 contains performance improvements for the hierarchical keyring and
  extends the range of supported cryptography versions.

4.0.1 -- 2025-03-27

Fixes

• fix: Improve header serialization (#747)

  ESDK-Python <4.0.1 would truncate non-ASCII key provider IDs it wrote to message headers.
  If a Raw or Custom MasterKeyProvider or Keyring supplied a non-ASCII key provider ID / key namespace,
  ESDK-Python would truncate the the key provider ID it wrote to the message's header.
  The message can be decrypted by replacing the truncated provider ID with the expected provider ID in decryption code.
  Contact AWS for any questions about this approach.

Maintenance

• deps: Extend supported MPL versions to include v1.10.0

4.0.0 -- 2024-11-13

Features

• Add support for constructs from the AWS Cryptographic Material Providers Library (MPL).
  The MPL contains new constructs for encrypting and decrypting your data.
  We highly recommend installing the MPL. See Installing for instructions.

Breaking Changes

• The MPL introduces the Required Encryption Context Cryptographic Materials Manager
  ("required EC CMM") as a new construct for protecting your data.
  On encrypt, the required EC CMM will use specific configured
  encryption context key-value pairs to calculate the message signature,
  but will not store those pairs in the ESDK message.
  On decrypt, decryptors must supply these same pairs that were used when encrypting the message.
  All messages that have been encrypted with versions of the ESDK <4.0.0 are forward compatible with this change.
  However, messages that are constructed with the required EC CMM are not backward compatible with ESDK <4.0.0,
  as no version of ESDK <4.0.0 supports reading messages encrypted with the required EC CMM.
  A message that is encrypted with the required EC CMM from the MPL must be decrypted with a CMM from the MPL.

Fixes

• fix: MKPs attempt to decrypt with remaining keys if a preceding raw RSA key failed to decrypt (#707)

3.3.0 -- 2024-05-21

Deprecation

The AWS Encryption SDK for Python no longer supports Python 3.7
as of version 3.3; only Python 3.8+ is supported.

Fixes

• fix: Handle errors when decrypting multiple EDKs with raw RSA MKPs (#672 (#672))
• chore: Updated description of decrypt() usage in src/aws_encryption_sdk/init.py (#660 (#660))
• fix(CI): removed appveyor.yml (#668 (#668))
• fix(CI): updated ci_test-vector-handler.yaml and ci_tests.yaml (#665 (#665))

Maintenance

• feat: remove Python3.7 support (#648 (#648))
• chore: Update copyright headers (#677 (#677))
• chore(CFN): Changes for MPL TestVectors (#653 (#653))

3.2.0 -- 2024-03-18

Features

• test Python 3.12 in CI (#623 (https://github.com/josecorella/aws-encryption-sdk-python/issues/623)) (93a67d8 (josecorella@93a67d8))
• update requirements and README (#638 (https://github.com/josecorella/aws-encryption-sdk-python/issues/638)) (bcead77 (josecorella@bcead77))

Fixes

• CI for Decrypt Oracle (#558 (https://github.com/josecorella/aws-encryption-sdk-python/issues/558)) (6c6b732 (josecorella@6c6b732))
• deprecate python36 from chalice (#539 (https://github.com/josecorella/aws-encryption-sdk-python/issues/539)) (f8aa29f (josecorella@f8aa29f))
• test: correctly invoke ec.generate_private_key (#585 (https://github.com/josecorella/aws-encryption-sdk-python/issues/585)) (560e714 (josecorella@560e714))
• update pyca range (#507 (https://github.com/josecorella/aws-encryption-sdk-python/issues/507)) (aced92c (josecorella@aced92c))
• Use FORBID_ENCRYPT_ALLOW_DECRYPT policy for decrypt oracle (#538 (https://github.com/josecorella/aws-encryption-sdk-python/issues/538)) (e91838f (josecorella@e91838f))
• wrong formatting python warning (#546 (https://github.com/josecorella/aws-encryption-sdk-python/issues/546)) (9b618d3 (josecorella@9b618d3))

Maintenance

• Add example for custom KMS client config (#440 (https://github.com/josecorella/aws-encryption-sdk-python/issues/440)) (08f305a (josecorella@08f305a))
• Add Thread safety section to README (#562 (https://github.com/josecorella/aws-encryption-sdk-python/issues/562)) (7a07b16 (josecorella@7a07b16))
• bump deps & document upstream test (#646 (https://github.com/josecorella/aws-encryption-sdk-python/issues/646)) (a93ffe7 (josecorella@a93ffe7))
• CFN: Commit existing CFN (#636 (https://github.com/josecorella/aws-encryption-sdk-python/issues/636)) (c122076 (josecorella@c122076))
• ci: skip pyenv installation if already exists (#627 (https://github.com/josecorella/aws-encryption-sdk-python/issues/627)) (1006758 (josecorella@1006758))
• deps: bump actions/checkout from 3 to 4 (#607 (https://github.com/josecorella/aws-encryption-sdk-python/issues/607)) (e5c331b (josecorella@e5c331b))
• deps: bump actions/setup-python from 2 to 4.2.0 (#491 (https://github.com/josecorella/aws-encryption-sdk-python/issues/491)) (d064bf8 (josecorella@d064bf8))
• deps: bump cryptography from 39.0.0 to 39.0.1 in /test (#559 (https://github.com/josecorella/aws-encryption-sdk-python/issues/559)) (6468137 (josecorella@6468137))
• deps: bump cryptography from 39.0.1 to 41.0.2 in /test (#592 (https://github.com/josecorella/aws-encryption-sdk-python/issues/592)) (3ba8019 (josecorella@3ba8019))
• deps: bump cryptography from 41.0.2 to 41.0.6 in /test (#626 (https://github.com/josecorella/aws-encryption-sdk-python/issues/626)) (c67e6bd (josecorella@c67e6bd))
• deps: bump dependabot/fetch-metadata from 1.3.0 to 1.3.6 (#549 (https://github.com/josecorella/aws-encryption-sdk-python/issues/549)) (2a6bd9d (josecorella@2a6bd9d))
• deps: bump flake8-bugbear in /dev_requirements (#512 (https://github.com/josecorella/aws-encryption-sdk-python/issues/512)) (93f01d6 (josecorella@93f01d6))
• deps: bump flake8-docstrings in /dev_requirements (#555 (https://github.com/josecorella/aws-encryption-sdk-python/issues/555)) (bd8f270 (josecorella@bd8f270))
• deps: bump flake8-print from 4.0.0 to 5.0.0 in /dev_requirements (#554 (https://github.com/josecorella/aws-encryption-sdk-python/issues/554)) (2326531 (josecorella@2326531))
• deps: bump isort from 5.10.1 to 5.11.4 in /dev_requirements (#551 (https://github.com/josecorella/aws-encryption-sdk-python/issues/551)) (36a0ea2 (josecorella@36a0ea2))
• deps: bump pytest from 7.0.1 to 7.2.0 in /dev_requirements (#524 (https://github.com/josecorella/aws-encryption-sdk-python/issues/524)) (af98302 (josecorella@af98302))
• deps: bump pytest from 7.2.0 to 7.2.1 in /dev_requirements (#553 (https://github.com/josecorella/aws-encryption-sdk-python/issues/553)) (48f96d5 (josecorella@48f96d5))
• deps: bump pytest-cov from 3.0.0 to 4.0.0 in /dev_requirements (#550 (https://github.com/josecorella/aws-encryption-sdk-python/issues/550)) (6e436e1 (josecorella@6e436e1))
• deps: bump readme-renderer from 34.0 to 37.3 in /dev_requirements (#526 (https://github.com/josecorella/aws-encryption-sdk-python/issues/526)) (38aa063 (josecorella@38aa063))
• deps: bump setuptools from 62.0.0 to 66.1.1 in /dev_requirements (#547 (https://github.com/josecorella/aws-encryption-sdk-python/issues/547)) (04e8c16 (josecorella@04e8c16))
• deps: bump sphinx from 4.4.0 to 5.3.0 in /dev_requirements (#523 (https://github.com/josecorella/aws-encryption-sdk-python/issues/523)) (51cb2ce (josecorella@51cb2ce))
• deps: bump tox from 3.24.5 to 3.27.1 in /dev_requirements (#528 (https://github.com/josecorella/aws-encryption-sdk-python/issues/528)) (e2c834a (josecorella@e2c834a))
• deps: bump urllib3 from 1.26.14 to 1.26.18 in /test (#618 (https://github.com/josecorella/aws-encryption-sdk-python/issues/618)) (bbb2281 (josecorella@bbb2281))
• deps: bump vulture from 2.3 to 2.6 in /dev_requirements (#533 (https://github.com/josecorella/aws-encryption-sdk-python/issues/533)) (2822364 (josecorella@2822364))
• deps: bump wheel from 0.37.1 to 0.38.4 in /dev_requirements (#536 (https://github.com/josecorella/aws-encryption-sdk-python/issues/536)) (1922650 (josecorella@1922650))
• drop py3.6 from Oracle & Test Vectors (#529 (https://github.com/josecorella/aws-encryption-sdk-python/issues/529)) (8b6a493 (josecorella@8b6a493))
• drop py36 support (#530 (https://github.com/josecorella/aws-encryption-sdk-python/issues/530)) (a753ff8 (josecorella@a753ff8))
• release: add api token to prod release process (#503 (https://github.com/josecorella/aws-encryption-sdk-python/issues/503)) (333c85b (josecorella@333c85b))
• release: add api token to staging release process (#502 (https://github.com/josecorella/aws-encryption-sdk-python/issues/502)) (78e43b3 (josecorella@78e43b3))
• rm upstream-py27 (#564 (https://github.com/josecorella/aws-encryption-sdk-python/issues/564)) (b378508 (josecorella@b378508))
• SupportPolicy: Mark 1.x & 2.x End-of-Support (#501 (https://github.com/josecorella/aws-encryption-sdk-python/issues/501)) (ca58e5e (josecorella@ca58e5e))