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                                                                                                                                                                                     # Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license

# Copyright (C) 2003-2017 Nominum, Inc.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose with or without fee is hereby granted,
# provided that the above copyright notice and this permission notice
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

"""Common DNSSEC-related types."""

# This is a separate file to avoid import circularity between dns.dnssec and
# the implementations of the DS and DNSKEY types.

import dns.enum


class Algorithm(dns.enum.IntEnum):
    RSAMD5 = 1
    DH = 2
    DSA = 3
    ECC = 4
    RSASHA1 = 5
    DSANSEC3SHA1 = 6
    RSASHA1NSEC3SHA1 = 7
    RSASHA256 = 8
    RSASHA512 = 10
    ECCGOST = 12
    ECDSAP256SHA256 = 13
    ECDSAP384SHA384 = 14
    ED25519 = 15
    ED448 = 16
    INDIRECT = 252
    PRIVATEDNS = 253
    PRIVATEOID = 254

    @classmethod
    def _maximum(cls):
        return 255


class DSDigest(dns.enum.IntEnum):
    """DNSSEC Delegation Signer Digest Algorithm"""

    NULL = 0
    SHA1 = 1
    SHA256 = 2
    GOST = 3
    SHA384 = 4

    @classmethod
    def _maximum(cls):
        return 255


class NSEC3Hash(dns.enum.IntEnum):
    """NSEC3 hash algorithm"""

    SHA1 = 1

    @classmethod
    def _maximum(cls):
        return 255