Fix CVE-2019-14853 - possible DoS caused by malformed signature decoding
Fix CVE-2019-14859 - signature malleability caused by insufficient checks of DER encoding
Also harden key decoding from string and DER encodings.
ecdsa 0.13.2
Restore compatibility of setup.py with Python 2.6 and 2.7.
ecdsa 0.13.1
Fix the PyPI wheel - the old version included .pyc files.
ecdsa 0.13
Fix the argument order for Curve constructor (put openssl_name= at the end,
with a default value) to unbreak compatibility with external callers who used
the 0.11 convention.
ecdsa 0.12
Switch to Versioneer for version-string management (fixing the broken
ecdsa.__version__ attribute). Add Curve.openssl_name property. Mention
secp256k1 in README, test against OpenSSL. Produce "wheel" distributions. Add
py3.4 and pypy3 compatibility testing. Other minor fixes.
Bug fixes:
from curves import * will now correctly import BRAINPOOLP256r1 and
BRAINPOOLP320r1 curves.
New features:
ECDH operations have a public explicit API.
Large hashes are now supported with small curves (e.g. SHA-256 can be used
with NIST192p).
VerifyingKey now supports the precompute() method to further speed up
signature verification with the given instance of the key.
New API:
VerifyingKey, SigningKey, Public_key, Private_key and
CurveFp now have __eq__ methods.
ecdsa.ecdh module and ECDH class.
PointJacobi added.
VerifyingKey.verify_digest, SigningKey.sign_digest and
SigningKey.sign_digest_deterministic methods now accept allow_truncate
argument to enable use of hashes larger than the curve order.
VerifyingKeyfrom_pem and from_der now accept hashfunc parameter
like other from* methods.
VerifyingKey has precompute method now.
VerifyingKey.from_public_point may now not perform validation of public
point when validate_point=False argument is passed to method.
CurveFp constructor now accepts the h parameter - the cofactor of the
elliptic curve, it's used for selection of algorithm of public point
verification.
Performance:
randrange now will now perform much fewer calls to system random number
generator.
PointJacobi introduced and used as the underlying implementation; speeds up
the library by a factor of about 20.
Library has now optional dependencies on gmpy and gmpy2. When they are
availbale, the elliptic curve calculations will be about 3 times faster.
Maintenance:
expected minimum version of six module (1.9.0) is now specified explicitly
in setup.py and tested against.
Significantly faster test suite execution.
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Bumps ecdsa from 0.11 to 0.13.3.
Release notes
Sourced from ecdsa's releases.
Changelog
Sourced from ecdsa's changelog.
Commits
7add221
update NEWS file for 0.13.35c4c74a
Merge pull request #124 from tomato42/backport-sig-decode1eb2c04
update README with error handling of from_string() and from_der()b95be03
execute also new tests in Travis99c907d
harden also key decoding3427fa2
ensure that the encoding is actually the minimal one for length and integer563d2ee
make variable names in remove_integer more aproppriate14abfe0
explicitly specify the distro to get py26 and py339080d1d
fix length decoding897178c
give the same handling to string encoded signatures as to DERDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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