Bump ecdsa from 0.16.1 to 0.17.0

[dependabot]

Bumps ecdsa from 0.16.1 to 0.17.0.

Release notes

Sourced from ecdsa's releases.

ecdsa 0.17.0

New API:

• Keys that use explicit curve parameters can now be read and written. Reading of explicit curves can be disabled by using the valid_curve_encodings keyword argument in VerifyingKey.from_pem(), VerifyingKey.from_der(), SigningKey.from_pem(), and SigningKey.from_der().
• Keys can now be written with use of explicit curve parameters, use curve_parameters_encoding keyword argument of VerifyingKey.to_pem(), VerifyingKey.to_der(), SigningKey.to_pem(), or SigningKey.to_der() to specify the format. By default named_curve will be used, unless the curve doesn't have an associated OID (as will be the case for an unsupported curve), then explicit encoding will be used.
• Allow specifying acceptable point formats when loading public keys (this also fixes a minor bug where python-ecdsa would accept raw encoding for points in PKCS#8 files). Set of accepted encodings is controlled by valid_encodings keyword argument in ECDH.load_received_public_key_bytes(), VerifyingKey.from_string(), VerifyingKey.from_pem(), VerifyingKey.from_der().
• PointJacobi and Point now inherit from AbstractPoint that implements the methods for parsing points. That added from_bytes() and to_bytes() methods to both of them.
• Curve parameters can now be read and written to PEM and DER files. The Curve class supports new to_der(), from_der(), to_pem(), and from_pem() methods.

Doc fix:

• Describe in detail which methods can raise RSZeroError, and that SigningKey.sign_deterministic() won't raise it.

Bug fix:

• Correctly truncate hash values larger than the curve order (only impacted custom curves and the curves added in this release).
• Correctly handle curves for which the order is larger than the prime (only impacted custom curves and the secp160r1 curve added in this release).
• Fix the handling of == and != for Public_key, Private_key, Point, PointJacobi, VerifyingKey, and SigningKey so that it behaves consistently and in the expected way both in Python 2 and Python 3.
• Implement lock-less algorithm inside PointJacobi for keeping shared state so that when calculation is aborted with KeyboardInterrupt, the state doesn't become corrupted (this fixes the occasional breakage of ecdsa in interactive shells).

New features:

• The speed.py script now provides performance for signature verification without use of precomputation.
• New curves supported: secp112r1, secp112r2, secp128r1, secp160r1.
• Keys with explicit curve encoding are now supported.

Performance:

... (truncated)

Changelog

Sourced from ecdsa's changelog.

• Release 0.17.0 (27 May 2021)

New API:

• Keys that use explicit curve parameters can now be read and written. Reading of explicit curves can be disabled by using the valid_curve_encodings keyword argument in VerifyingKey.from_pem(), VerifyingKey.from_der(), SigningKey.from_pem(), and SigningKey.from_der().
• Keys can now be written with use of explicit curve parameters, use curve_parameters_encoding keyword argument of VerifyingKey.to_pem(), VerifyingKey.to_der(), SigningKey.to_pem(), or SigningKey.to_der()to specify the format. By defaultnamed_curvewill be used, unless the curve doesn't have an associated OID (as will be the case for an unsupported curve), thenexplicit` encoding will be used.
• Allow specifying acceptable point formats when loading public keys (this also fixes a minor bug where python-ecdsa would accept raw encoding for points in PKCS#8 files). Set of accepted encodings is controlled by valid_encodings keyword argument in ECDH.load_received_public_key_bytes(), VerifyingKey.from_string(), VerifyingKey.from_pem(), VerifyingKey.from_der()`.
• PointJacobi and Point now inherit from AbstractPoint that implements the methods for parsing points. That added from_bytes() and to_bytes() methods to both of them.
• Curve parameters can now be read and written to PEM and DER files. The Curve class supports new to_der(), from_der(), to_pem(), and from_pem() methods.

Doc fix:

• Describe in detail which methods can raise RSZeroError, and that SigningKey.sign_deterministic() won't raise it.

Bug fix:

• Correctly truncate hash values larger than the curve order (only impacted custom curves and the curves added in this release).
• Correctly handle curves for which the order is larger than the prime (only impacted custom curves and the secp160r1 curve added in this release).
• Fix the handling of == and != for Public_key, Private_key, Point, PointJacobi, VerifyingKey, and SigningKey so that it behaves consistently and in the expected way both in Python 2 and Python 3.
• Implement lock-less algorithm inside PointJacobi for keeping shared state so that when a calculation is aborted with KeyboardInterrupt, the state doesn't become corrupted (this fixes the occasional breakage of ecdsa in interactive shells).

New features:

• The speed.py script now provides performance for signature verification without the use of precomputation.
• New curves supported: secp112r1, secp112r2, secp128r1, secp160r1.

Performance:

... (truncated)

Commits

• 5aa87c5 release 0.17.0
• 634e5b0 Merge pull request #252 from tomato42/explicit-curve-params
• 1ea4aef fix CI on py3.4
• 77cabc0 add tox environment for formatting code with black
• 717c04c add support for writing keys with explicit curve parameters
• c7e285a support reading keys with explicitly encoded curve parameters
• 2574d21 support for limiting acceptable curve encodings
• 5ddcd9b support for PEM format for EC parameters
• 078882e add support for reading and writing curve parameters in DER
• 315f312 move parsing of points from VerifyingKey to parent class of points
• Additional commits viewable in compare view

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