C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// # This file is dual licensed under the terms of the Apache License, Version # 2.0, and the BSD License. See the LICENSE file in the root of this repository # for complete details. from __future__ import annotations import abc from cryptography import utils from cryptography.hazmat.primitives.hashes import HashAlgorithm # This exists to break an import cycle. These classes are normally accessible # from the serialization module. class PBES(utils.Enum): PBESv1SHA1And3KeyTripleDESCBC = "PBESv1 using SHA1 and 3-Key TripleDES" PBESv2SHA256AndAES256CBC = "PBESv2 using SHA256 PBKDF2 and AES256 CBC" class Encoding(utils.Enum): PEM = "PEM" DER = "DER" OpenSSH = "OpenSSH" Raw = "Raw" X962 = "ANSI X9.62" SMIME = "S/MIME" class PrivateFormat(utils.Enum): PKCS8 = "PKCS8" TraditionalOpenSSL = "TraditionalOpenSSL" Raw = "Raw" OpenSSH = "OpenSSH" PKCS12 = "PKCS12" def encryption_builder(self) -> KeySerializationEncryptionBuilder: if self not in (PrivateFormat.OpenSSH, PrivateFormat.PKCS12): raise ValueError( "encryption_builder only supported with PrivateFormat.OpenSSH" " and PrivateFormat.PKCS12" ) return KeySerializationEncryptionBuilder(self) class PublicFormat(utils.Enum): SubjectPublicKeyInfo = "X.509 subjectPublicKeyInfo with PKCS#1" PKCS1 = "Raw PKCS#1" OpenSSH = "OpenSSH" Raw = "Raw" CompressedPoint = "X9.62 Compressed Point" UncompressedPoint = "X9.62 Uncompressed Point" class ParameterFormat(utils.Enum): PKCS3 = "PKCS3" class KeySerializationEncryption(metaclass=abc.ABCMeta): pass class BestAvailableEncryption(KeySerializationEncryption): def __init__(self, password: bytes): if not isinstance(password, bytes) or len(password) == 0: raise ValueError("Password must be 1 or more bytes.") self.password = password class NoEncryption(KeySerializationEncryption): pass class KeySerializationEncryptionBuilder: def __init__( self, format: PrivateFormat, *, _kdf_rounds: int | None = None, _hmac_hash: HashAlgorithm | None = None, _key_cert_algorithm: PBES | None = None, ) -> None: self._format = format self._kdf_rounds = _kdf_rounds self._hmac_hash = _hmac_hash self._key_cert_algorithm = _key_cert_algorithm def kdf_rounds(self, rounds: int) -> KeySerializationEncryptionBuilder: if self._kdf_rounds is not None: raise ValueError("kdf_rounds already set") if not isinstance(rounds, int): raise TypeError("kdf_rounds must be an integer") if rounds < 1: raise ValueError("kdf_rounds must be a positive integer") return KeySerializationEncryptionBuilder( self._format, _kdf_rounds=rounds, _hmac_hash=self._hmac_hash, _key_cert_algorithm=self._key_cert_algorithm, ) def hmac_hash( self, algorithm: HashAlgorithm ) -> KeySerializationEncryptionBuilder: if self._format is not PrivateFormat.PKCS12: raise TypeError( "hmac_hash only supported with PrivateFormat.PKCS12" ) if self._hmac_hash is not None: raise ValueError("hmac_hash already set"