tlsfuzzer/python-ecdsa

📋 Changes

• Fix CVE-2026-33936, a DER parsing issue in ``remove_octet_string()``,
• Update CI to use newer version of Ubuntu.

📋 Changes

• ``der.remove_implicit`` and ``der.encode_implicit`` for decoding and
• Minor fixes around arithmetic with curves that have non-prime order
• Fix arithmetic to work with curves that have (0, 0) on the curve
• Fix canonicalization of signatures when ``s`` is just slightly
• Dropped official support for Python 3.5 (again, issues with CI, support
• Officially support Python 3.12 and 3.13 (add them to CI)
• Removal of few more unnecessary `six.b` literals (Alexandre Detiste)
• Fix typos in warning messages

📋 Changes

• `to_ssh` in `VerifyingKey` and `SigningKey`, supports Ed25519 keys only
• Support for twisted Brainpool curves
• Fix curve equation in glossary
• Documentation for signature encoding and signature decoding functions
• Dropped official support for 3.3 and 3.4 (because of problems running them
• Fixes around hypothesis parameters
• Officially support Python 3.11 and 3.12
• Small updates to test suite to make it work with 3.11 and 3.12 and new
• + 4 more

📋 Changes

• Support for EdDSA (Ed25519, Ed448) signature creation and verification.
• Support for Ed25519 and Ed448 in PKCS#8 and public key files.
• Support for point precomputation for EdDSA.
• CurveEdTw class to represent the Twisted Edwards curve parameters.
• PointEdwards class to represent points on Twisted Edwards curve and
• `curve_by_name` in `curves` module to get a `Curve` object by providing curve
• Accept private EdDSA keys that include public key in the ASN.1 structure.
• Fix incompatibility with Python 3.3 in handling of memoryviews of empty
• + 9 more

📋 Changes

• Support for point precomputation for EdDSA.
• Fix few typos (thanks to Tim Gates and Kian Meng Ang).
• Accept private EdDSA keys that include public key in the ASN.1 structure.
• Fix incompatibility with Python 3.3 in handling of memoryviews of empty

📋 Changes

• Support for EdDSA (Ed25519, Ed448) signature creation and verification.
• Support for Ed25519 and Ed448 in PKCS#8 and public key files.
• CurveEdTw class to represent the Twisted Edwards curve parameters.
• PointEdwards class to represent points on Twisted Edwards curve and

📋 Changes

• Keys that use explicit curve parameters can now be read and written.
• Keys can now be written with use of explicit curve parameters,
• Allow specifying acceptable point formats when loading public keys
• `PointJacobi` and `Point` now inherit from `AbstractPoint` that implements
• Curve parameters can now be read and written to PEM and DER files. The
• Describe in detail which methods can raise `RSZeroError`, and that
• Correctly truncate hash values larger than the curve order (only impacted
• Correctly handle curves for which the order is larger than the prime
• + 11 more

📋 Changes

• `VerifyingKey.precompute()` supports `lazy` argument to delay precomputation
• Documentation for the `VerifyingKey.precompute()` method.
• Make created signatures correct when the hash used is bigger than the curve
• Speed up library load time by calculating the generator point multiplication
• Include Python 3.9 in CI testing.
• Test coverage for the `VerifyingKey.precompute()` method.
• Small speed-ups for the test suite.

📋 Changes

• Support for reading and writing private keys in PKCS#8 format.
• `to_pem` and `to_der` now accept new parameter, `format`, to specify
• Add `allow_truncate` to `verify` in `VerifyingKey`, it defaults to True,
• Correctly calculate signatures for private keys equal to n-1.
• Make `PointJacobi` and thus `SigningKey` and `VerifyingKey` pickleable.
• `to_pem` functions return `bytes` not `str`, document them as such.
• `from_pem` and `from_pem` in `SigningKey` returns `SigningKey`, document them
• Ensure that version checks will work with Python 4.
• + 3 more

📋 Changes

• much faster (around 20x)
• dedicated API for ECDH
• `from curves import *` will now correctly import `BRAINPOOLP256r1` and
• ECDH operations have a public explicit API.
• Large hashes are now supported with small curves (e.g. SHA-256 can be used
• `VerifyingKey` now supports the `precompute()` method to further speed up
• `VerifyingKey`, `SigningKey`, `Public_key`, `Private_key` and
• `ecdsa.ecdh` module and `ECDH` class.
• + 11 more

📋 Changes

• support for Brainpool curves
• better test coverage, fixed bugs found by it
• support for compressed point representation
• Strict checking of DER requirements when parsing SEQUENCE, INTEGER,
• DER parsers now consistently raise `UnexpectedDER` exception on malformed DER
• Make sure that both malformed and invalid signatures raise `BadSignatureError`.
• Ensure that all `SigningKey` and `VerifyingKey` methods that should accept
• Make `SigningKey.sign_digest_deterministic` use default object hashfunc when
• + 41 more