98 lines
2.2 KiB
Python
98 lines
2.2 KiB
Python
# This file is dual licensed under the terms of the Apache License, Version
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# 2.0, and the BSD License. See the LICENSE file in the root of this repository
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# for complete details.
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from __future__ import annotations
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import abc
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import datetime
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from cryptography import utils
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from cryptography.hazmat.bindings._rust import x509 as rust_x509
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from cryptography.hazmat.primitives.hashes import HashAlgorithm
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class LogEntryType(utils.Enum):
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X509_CERTIFICATE = 0
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PRE_CERTIFICATE = 1
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class Version(utils.Enum):
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v1 = 0
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class SignatureAlgorithm(utils.Enum):
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"""
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Signature algorithms that are valid for SCTs.
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These are exactly the same as SignatureAlgorithm in RFC 5246 (TLS 1.2).
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See: <https://datatracker.ietf.org/doc/html/rfc5246#section-7.4.1.4.1>
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"""
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ANONYMOUS = 0
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RSA = 1
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DSA = 2
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ECDSA = 3
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class SignedCertificateTimestamp(metaclass=abc.ABCMeta):
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@property
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@abc.abstractmethod
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def version(self) -> Version:
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"""
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Returns the SCT version.
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"""
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@property
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@abc.abstractmethod
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def log_id(self) -> bytes:
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"""
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Returns an identifier indicating which log this SCT is for.
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"""
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@property
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@abc.abstractmethod
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def timestamp(self) -> datetime.datetime:
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"""
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Returns the timestamp for this SCT.
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"""
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@property
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@abc.abstractmethod
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def entry_type(self) -> LogEntryType:
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"""
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Returns whether this is an SCT for a certificate or pre-certificate.
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"""
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@property
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@abc.abstractmethod
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def signature_hash_algorithm(self) -> HashAlgorithm:
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"""
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Returns the hash algorithm used for the SCT's signature.
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"""
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@property
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@abc.abstractmethod
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def signature_algorithm(self) -> SignatureAlgorithm:
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"""
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Returns the signing algorithm used for the SCT's signature.
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"""
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@property
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@abc.abstractmethod
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def signature(self) -> bytes:
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"""
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Returns the signature for this SCT.
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"""
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@property
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@abc.abstractmethod
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def extension_bytes(self) -> bytes:
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"""
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Returns the raw bytes of any extensions for this SCT.
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"""
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SignedCertificateTimestamp.register(rust_x509.Sct)
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