Sourced from pycryptodome's releases.

v3.23.0 - Dunkerque

New features

• Added cipher modes Key Wrap (KW, RFC3394) and Key Wrap with Padding (KWP, RFC5649). Both are defined also in NIST SP 800-38F.
• Wheels for Windows ARM.

Resolved issues

• GH#862: For HashEdDSA and Ed448, sign() and verify() modified the state of the XOF.

v3.22.0 - Caen

New features

• Added support for HPKE (RFC 9180).

Resolved issues

• GH#812: CCM ciphers will now fail before encrypting (or decrypting) data beyond the limit imposed by the nonce length.
• GH#846: fix infinite loop with RC4 for data larger than 4GB.
• GH#852: handle correctly invalid PEM files with less than 3 lines.

Other changes

• Remove support for Python 3.6.

v3.21.0 - Bourdeaux

New features

• By setting the PYCRYPTODOME_DISABLE_GMP environment variable, the GMP library will not be used even if detected.
• Add support for Curve25519 / X25519.
• Add support for Curve448 / X448.
• Add attribute curve to EccPoint and EccXPoint classes, with the canonical name of the curve.
• GH#781: the label for the SP800_108_Counter KDF may now contain zero bytes. Thanks to Julien Rische.
• GH#814: RSA keys for PSS can be imported.

Resolved issues

• GH#810: fixed negation of Ed25519 points.
• GH#819: accept an RFC5916 ECPrivateKey even if it doesn't contain any of the optional elements (parameters [0] and publicKey[1]).

Other changes

• Remove support for Python 3.5.

Sourced from pycryptodome's changelog.

3.23.0 (17 May 2025) ++++++++++++++++++++++++++

New features

• Added cipher modes Key Wrap (KW, RFC3394) and Key Wrap with Padding (KWP, RFC5649). Both are defined also in NIST SP 800-38F.
• Wheels for Windows ARM.

Resolved issues

• GH#862: For HashEdDSA and Ed448, sign() and verify() modified the state of the XOF.

3.22.0 (16 March 2025) ++++++++++++++++++++++++++

New features

• Added support for HPKE (RFC 9180).

Resolved issues

• GH#812: CCM ciphers will now fail before encrypting (or decrypting) data beyond the limit imposed by the nonce length.
• GH#846: fix infinite loop with RC4 for data larger than 4GB.
• GH#852: handle correctly invalid PEM files with less than 3 lines.

Other changes

• Remove support for Python 3.6.

3.21.0 (30 September 2024) ++++++++++++++++++++++++++

New features

• By setting the PYCRYPTODOME_DISABLE_GMP environment variable, the GMP library will not be used even if detected.
• Add support for Curve25519 / X25519.
• Add support for Curve448 / X448.
• Add attribute curve to EccPoint and EccXPoint classes, with the canonical name of the curve.
• GH#781: the label for the SP800_108_Counter KDF may now contain zero bytes. Thanks to Julien Rische.
• GH#814: RSA keys for PSS can be imported.

Resolved issues

• GH#810: fixed negation of Ed25519 points.
• GH#819: accept an RFC5916 ECPrivateKey even if it doesn't

... (truncated)

• cde63f8 Undo license information in pyproject.toml
• 51ccbac Add license information in pyproject.toml
• 8d4e536 Bump version
• 8652874 Add license information in pyproject.toml
• 1006d4f Build cpython-freethreading wheel
• 0a056c0 Update FAQ for HPKE
• 0785df8 Update FAQ
• ee15eee Update Changelog
• 876573e Test and build wheels for Windows ARM
• 64506f7 Merge branch 'key_wrap'
• Additional commits viewable in compare view

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