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ssh-audit/src/ssh_audit/ssh2_kexdb.py

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"""
The MIT License (MIT)
Copyright (C) 2017-2020 Joe Testa (jtesta@positronsecurity.com)
Copyright (C) 2017 Andris Raugulis (moo@arthepsy.eu)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
"""
# pylint: disable=unused-import
from typing import Dict, List, Set, Sequence, Tuple, Iterable # noqa: F401
from typing import Callable, Optional, Union, Any # noqa: F401
class SSH2_KexDB: # pylint: disable=too-few-public-methods
WARN_OPENSSH74_UNSAFE = 'disabled (in client) since OpenSSH 7.4, unsafe algorithm'
WARN_OPENSSH72_LEGACY = 'disabled (in client) since OpenSSH 7.2, legacy algorithm'
FAIL_OPENSSH70_LEGACY = 'removed since OpenSSH 7.0, legacy algorithm'
FAIL_OPENSSH70_WEAK = 'removed (in server) and disabled (in client) since OpenSSH 7.0, weak algorithm'
FAIL_OPENSSH70_LOGJAM = 'disabled (in client) since OpenSSH 7.0, logjam attack'
INFO_OPENSSH69_CHACHA = 'default cipher since OpenSSH 6.9.'
FAIL_OPENSSH67_UNSAFE = 'removed (in server) since OpenSSH 6.7, unsafe algorithm'
FAIL_OPENSSH61_REMOVE = 'removed since OpenSSH 6.1, removed from specification'
FAIL_OPENSSH31_REMOVE = 'removed since OpenSSH 3.1'
FAIL_DBEAR67_DISABLED = 'disabled since Dropbear SSH 2015.67'
FAIL_DBEAR53_DISABLED = 'disabled since Dropbear SSH 0.53'
FAIL_DEPRECATED_CIPHER = 'deprecated cipher'
FAIL_WEAK_CIPHER = 'using weak cipher'
FAIL_WEAK_ALGORITHM = 'using weak/obsolete algorithm'
FAIL_PLAINTEXT = 'no encryption/integrity'
FAIL_DEPRECATED_MAC = 'deprecated MAC'
FAIL_1024BIT_MODULUS = 'using small 1024-bit modulus'
FAIL_UNPROVEN = 'using unproven algorithm'
WARN_CURVES_WEAK = 'using weak elliptic curves'
WARN_RNDSIG_KEY = 'using weak random number generator could reveal the key'
WARN_HASH_WEAK = 'using weak hashing algorithm'
WARN_CIPHER_MODE = 'using weak cipher mode'
WARN_BLOCK_SIZE = 'using small 64-bit block size'
WARN_CIPHER_WEAK = 'using weak cipher'
WARN_ENCRYPT_AND_MAC = 'using encrypt-and-MAC mode'
WARN_TAG_SIZE = 'using small 64-bit tag size'
WARN_TAG_SIZE_96 = 'using small 96-bit tag size'
WARN_EXPERIMENTAL = 'using experimental algorithm'
WARN_OBSOLETE = 'using obsolete algorithm'
WARN_UNTRUSTED = 'using untrusted algorithm'
ALGORITHMS = {
# Format: 'algorithm_name': [['version_first_appeared_in'], [reason_for_failure1, reason_for_failure2, ...], [warning1, warning2, ...]]
'kex': {
'diffie-hellman-group1-sha1': [['2.3.0,d0.28,l10.2', '6.6', '6.9'], [FAIL_1024BIT_MODULUS, FAIL_OPENSSH67_UNSAFE, FAIL_OPENSSH70_LOGJAM], [WARN_HASH_WEAK]],
'gss-group1-sha1-toWM5Slw5Ew8Mqkay+al2g==': [[], [FAIL_1024BIT_MODULUS, FAIL_OPENSSH67_UNSAFE, FAIL_OPENSSH70_LOGJAM], [WARN_HASH_WEAK]],
'gss-gex-sha1-toWM5Slw5Ew8Mqkay+al2g==': [[], [], [WARN_HASH_WEAK]],
'gss-gex-sha1-': [[], [], [WARN_HASH_WEAK]],
'gss-group1-sha1-': [[], [FAIL_1024BIT_MODULUS], [WARN_HASH_WEAK]],
'gss-group14-sha1-': [[], [], [WARN_HASH_WEAK]],
'gss-group14-sha1-toWM5Slw5Ew8Mqkay+al2g==': [[], [], [WARN_HASH_WEAK]],
'gss-group14-sha256-': [[]],
'gss-group14-sha256-toWM5Slw5Ew8Mqkay+al2g==': [[]],
'gss-group15-sha512-': [[]],
'gss-group15-sha512-toWM5Slw5Ew8Mqkay+al2g==': [[]],
'gss-group16-sha512-': [[]],
'gss-nistp256-sha256-': [[], [WARN_CURVES_WEAK]],
'gss-curve25519-sha256-': [[]],
'diffie-hellman-group1-sha256': [[], [FAIL_1024BIT_MODULUS]],
'diffie-hellman-group14-sha1': [['3.9,d0.53,l10.6.0'], [], [WARN_HASH_WEAK]],
'diffie-hellman-group14-sha256': [['7.3,d2016.73']],
'diffie-hellman-group14-sha256@ssh.com': [[]],
'diffie-hellman-group15-sha256': [[]],
'diffie-hellman-group15-sha256@ssh.com': [[]],
'diffie-hellman-group15-sha384@ssh.com': [[]],
'diffie-hellman-group15-sha512': [[]],
'diffie-hellman-group16-sha256': [[]],
'diffie-hellman-group16-sha384@ssh.com': [[]],
'diffie-hellman-group16-sha512': [['7.3,d2016.73']],
'diffie-hellman-group16-sha512@ssh.com': [[]],
'diffie-hellman-group17-sha512': [[]],
'diffie-hellman-group18-sha512': [['7.3']],
'diffie-hellman-group18-sha512@ssh.com': [[]],
'diffie-hellman-group-exchange-sha1': [['2.3.0', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [WARN_HASH_WEAK]],
'diffie-hellman-group-exchange-sha256': [['4.4']],
'diffie-hellman-group-exchange-sha256@ssh.com': [[]],
'diffie-hellman-group-exchange-sha512@ssh.com': [[]],
'ecdh-sha2-curve25519': [[], []],
'ecdh-sha2-nistb233': [[], [WARN_CURVES_WEAK]],
'ecdh-sha2-nistb409': [[], [WARN_CURVES_WEAK]],
'ecdh-sha2-nistk163': [[], [WARN_CURVES_WEAK]],
'ecdh-sha2-nistk233': [[], [WARN_CURVES_WEAK]],
'ecdh-sha2-nistk283': [[], [WARN_CURVES_WEAK]],
'ecdh-sha2-nistk409': [[], [WARN_CURVES_WEAK]],
'ecdh-sha2-nistp192': [[], [WARN_CURVES_WEAK]],
'ecdh-sha2-nistp224': [[], [WARN_CURVES_WEAK]],
'ecdh-sha2-nistp256': [['5.7,d2013.62,l10.6.0'], [WARN_CURVES_WEAK]],
'ecdh-sha2-nistp384': [['5.7,d2013.62'], [WARN_CURVES_WEAK]],
'ecdh-sha2-nistp521': [['5.7,d2013.62'], [WARN_CURVES_WEAK]],
'ecdh-sha2-nistt571': [[], [WARN_CURVES_WEAK]],
'ecdh-sha2-1.3.132.0.10': [[]], # ECDH over secp256k1 (i.e.: the Bitcoin curve)
'curve25519-sha256@libssh.org': [['6.5,d2013.62,l10.6.0']],
'curve25519-sha256': [['7.4,d2018.76']],
'curve448-sha512': [[]],
'kexguess2@matt.ucc.asn.au': [['d2013.57']],
'rsa1024-sha1': [[], [FAIL_1024BIT_MODULUS], [WARN_HASH_WEAK]],
'rsa2048-sha256': [[]],
'sntrup4591761x25519-sha512@tinyssh.org': [['8.0'], [], [WARN_EXPERIMENTAL]],
'kexAlgoCurve25519SHA256': [[]],
'Curve25519SHA256': [[]],
'ext-info-c': [[]], # Extension negotiation (RFC 8308)
'ext-info-s': [[]], # Extension negotiation (RFC 8308)
},
'key': {
'ssh-rsa1': [[], [FAIL_WEAK_ALGORITHM]],
'rsa-sha2-256': [['7.2']],
'rsa-sha2-512': [['7.2']],
'ssh-ed25519': [['6.5,l10.7.0']],
'ssh-ed25519-cert-v01@openssh.com': [['6.5']],
'ssh-rsa': [['2.5.0,d0.28,l10.2'], [WARN_HASH_WEAK]],
'ssh-dss': [['2.1.0,d0.28,l10.2', '6.9'], [FAIL_1024BIT_MODULUS, FAIL_OPENSSH70_WEAK], [WARN_RNDSIG_KEY]],
'ecdsa-sha2-nistp256': [['5.7,d2013.62,l10.6.4'], [WARN_CURVES_WEAK], [WARN_RNDSIG_KEY]],
'ecdsa-sha2-nistp384': [['5.7,d2013.62,l10.6.4'], [WARN_CURVES_WEAK], [WARN_RNDSIG_KEY]],
'ecdsa-sha2-nistp521': [['5.7,d2013.62,l10.6.4'], [WARN_CURVES_WEAK], [WARN_RNDSIG_KEY]],
'ecdsa-sha2-1.3.132.0.10': [[], [], [WARN_RNDSIG_KEY]], # ECDSA over secp256k1 (i.e.: the Bitcoin curve)
'x509v3-sign-dss': [[], [FAIL_1024BIT_MODULUS, FAIL_OPENSSH70_WEAK], [WARN_RNDSIG_KEY]],
'x509v3-sign-rsa': [[], [], [WARN_HASH_WEAK]],
'x509v3-sign-rsa-sha256@ssh.com': [[]],
'x509v3-ssh-dss': [[], [FAIL_1024BIT_MODULUS, FAIL_OPENSSH70_WEAK], [WARN_RNDSIG_KEY]],
'x509v3-ssh-rsa': [[], [], [WARN_HASH_WEAK]],
'ssh-rsa-cert-v00@openssh.com': [['5.4', '6.9'], [FAIL_OPENSSH70_LEGACY], []],
'ssh-dss-cert-v00@openssh.com': [['5.4', '6.9'], [FAIL_1024BIT_MODULUS, FAIL_OPENSSH70_LEGACY], [WARN_RNDSIG_KEY]],
'ssh-rsa-cert-v01@openssh.com': [['5.6']],
'ssh-dss-cert-v01@openssh.com': [['5.6', '6.9'], [FAIL_1024BIT_MODULUS, FAIL_OPENSSH70_WEAK], [WARN_RNDSIG_KEY]],
'ecdsa-sha2-nistp256-cert-v01@openssh.com': [['5.7'], [WARN_CURVES_WEAK], [WARN_RNDSIG_KEY]],
'ecdsa-sha2-nistp384-cert-v01@openssh.com': [['5.7'], [WARN_CURVES_WEAK], [WARN_RNDSIG_KEY]],
'ecdsa-sha2-nistp521-cert-v01@openssh.com': [['5.7'], [WARN_CURVES_WEAK], [WARN_RNDSIG_KEY]],
'rsa-sha2-256-cert-v01@openssh.com': [['7.8']],
'rsa-sha2-512-cert-v01@openssh.com': [['7.8']],
'ssh-rsa-sha256@ssh.com': [[]],
'ssh-dss-sha256@ssh.com': [[], [FAIL_1024BIT_MODULUS]],
'sk-ecdsa-sha2-nistp256-cert-v01@openssh.com': [['8.2'], [WARN_CURVES_WEAK], [WARN_RNDSIG_KEY]],
'sk-ecdsa-sha2-nistp256@openssh.com': [['8.2'], [WARN_CURVES_WEAK], [WARN_RNDSIG_KEY]],
'sk-ssh-ed25519-cert-v01@openssh.com': [['8.2']],
'sk-ssh-ed25519@openssh.com': [['8.2']],
'ssh-gost2001': [[], [], [WARN_UNTRUSTED]],
'ssh-gost2012-256': [[], [], [WARN_UNTRUSTED]],
'ssh-gost2012-512': [[], [], [WARN_UNTRUSTED]],
'spi-sign-rsa': [[]],
'ssh-ed448': [[]],
'x509v3-ecdsa-sha2-nistp256': [[], [WARN_CURVES_WEAK]],
'x509v3-ecdsa-sha2-nistp384': [[], [WARN_CURVES_WEAK]],
'x509v3-ecdsa-sha2-nistp521': [[], [WARN_CURVES_WEAK]],
'x509v3-rsa2048-sha256': [[]],
},
'enc': {
'none': [['1.2.2,d2013.56,l10.2'], [FAIL_PLAINTEXT]],
'des': [[], [FAIL_WEAK_CIPHER], [WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'des-cbc': [[], [FAIL_WEAK_CIPHER], [WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'des-cbc@ssh.com': [[], [FAIL_WEAK_CIPHER], [WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'des-cbc-ssh1': [[], [FAIL_WEAK_CIPHER], [WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'3des': [[], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH74_UNSAFE, WARN_CIPHER_WEAK, WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'3des-cbc': [['1.2.2,d0.28,l10.2', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH74_UNSAFE, WARN_CIPHER_WEAK, WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'3des-ctr': [['d0.52'], [FAIL_WEAK_CIPHER]],
'blowfish': [[], [FAIL_WEAK_ALGORITHM], [WARN_BLOCK_SIZE]],
'blowfish-cbc': [['1.2.2,d0.28,l10.2', '6.6,d0.52', '7.1,d0.52'], [FAIL_OPENSSH67_UNSAFE, FAIL_DBEAR53_DISABLED], [WARN_OPENSSH72_LEGACY, WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'blowfish-ctr': [[], [FAIL_OPENSSH67_UNSAFE, FAIL_DBEAR53_DISABLED], [WARN_OPENSSH72_LEGACY, WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'twofish-cbc': [['d0.28', 'd2014.66'], [FAIL_DBEAR67_DISABLED], [WARN_CIPHER_MODE]],
'twofish128-cbc': [['d0.47', 'd2014.66'], [FAIL_DBEAR67_DISABLED], [WARN_CIPHER_MODE]],
'twofish192-cbc': [[], [], [WARN_CIPHER_MODE]],
'twofish256-cbc': [['d0.47', 'd2014.66'], [FAIL_DBEAR67_DISABLED], [WARN_CIPHER_MODE]],
'twofish-ctr': [[]],
'twofish128-ctr': [['d2015.68']],
'twofish192-ctr': [[]],
'twofish256-ctr': [['d2015.68']],
'serpent128-cbc': [[], [FAIL_DEPRECATED_CIPHER], [WARN_CIPHER_MODE]],
'serpent192-cbc': [[], [FAIL_DEPRECATED_CIPHER], [WARN_CIPHER_MODE]],
'serpent256-cbc': [[], [FAIL_DEPRECATED_CIPHER], [WARN_CIPHER_MODE]],
'serpent128-ctr': [[], [FAIL_DEPRECATED_CIPHER]],
'serpent192-ctr': [[], [FAIL_DEPRECATED_CIPHER]],
'serpent256-ctr': [[], [FAIL_DEPRECATED_CIPHER]],
'idea-cbc': [[], [FAIL_DEPRECATED_CIPHER], [WARN_CIPHER_MODE]],
'idea-ctr': [[], [FAIL_DEPRECATED_CIPHER]],
'cast128-ctr': [[], [FAIL_DEPRECATED_CIPHER]],
'cast128-cbc': [['2.1.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_CIPHER_MODE, WARN_BLOCK_SIZE]],
'arcfour': [['2.1.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_CIPHER_WEAK]],
'arcfour128': [['4.2', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_CIPHER_WEAK]],
'arcfour256': [['4.2', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_CIPHER_WEAK]],
'aes128-cbc': [['2.3.0,d0.28,l10.2', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [WARN_CIPHER_MODE]],
'aes192-cbc': [['2.3.0,l10.2', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [WARN_CIPHER_MODE]],
'aes256-cbc': [['2.3.0,d0.47,l10.2', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [WARN_CIPHER_MODE]],
'rijndael128-cbc': [['2.3.0', '3.0.2'], [FAIL_OPENSSH31_REMOVE], [WARN_CIPHER_MODE]],
'rijndael192-cbc': [['2.3.0', '3.0.2'], [FAIL_OPENSSH31_REMOVE], [WARN_CIPHER_MODE]],
'rijndael256-cbc': [['2.3.0', '3.0.2'], [FAIL_OPENSSH31_REMOVE], [WARN_CIPHER_MODE]],
'rijndael-cbc@lysator.liu.se': [['2.3.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_CIPHER_MODE]],
'aes128-ctr': [['3.7,d0.52,l10.4.1']],
'aes192-ctr': [['3.7,l10.4.1']],
'aes256-ctr': [['3.7,d0.52,l10.4.1']],
'aes128-gcm': [[]],
'aes256-gcm': [[]],
'AEAD_AES_128_GCM': [[]],
'AEAD_AES_256_GCM': [[]],
'aes128-gcm@openssh.com': [['6.2']],
'aes256-gcm@openssh.com': [['6.2']],
'chacha20-poly1305': [[], [], [], [INFO_OPENSSH69_CHACHA]],
'chacha20-poly1305@openssh.com': [['6.5'], [], [], [INFO_OPENSSH69_CHACHA]],
'camellia128-cbc': [[], [], [WARN_CIPHER_MODE]],
'camellia128-ctr': [[]],
'camellia192-cbc': [[], [], [WARN_CIPHER_MODE]],
'camellia192-ctr': [[]],
'camellia256-cbc': [[], [], [WARN_CIPHER_MODE]],
'camellia256-ctr': [[]],
'crypticore128@ssh.com': [[], [FAIL_UNPROVEN]],
'seed-cbc@ssh.com': [[], [], [WARN_OBSOLETE, WARN_CIPHER_MODE]],
},
'mac': {
'none': [['d2013.56'], [FAIL_PLAINTEXT]],
'hmac-sha1': [['2.1.0,d0.28,l10.2'], [], [WARN_ENCRYPT_AND_MAC, WARN_HASH_WEAK]],
'hmac-sha1-96': [['2.5.0,d0.47', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_ENCRYPT_AND_MAC, WARN_HASH_WEAK]],
'hmac-sha2-56': [[], [], [WARN_TAG_SIZE, WARN_ENCRYPT_AND_MAC]],
'hmac-sha2-224': [[], [], [WARN_TAG_SIZE, WARN_ENCRYPT_AND_MAC]],
'hmac-sha2-256': [['5.9,d2013.56,l10.7.0'], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha2-256-96': [['5.9', '6.0'], [FAIL_OPENSSH61_REMOVE], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha2-384': [[], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha2-512': [['5.9,d2013.56,l10.7.0'], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha2-512-96': [['5.9', '6.0'], [FAIL_OPENSSH61_REMOVE], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha3-224': [[], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha3-256': [[], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha3-384': [[], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha3-512': [[], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha256': [[], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha256-96@ssh.com': [[], [], [WARN_ENCRYPT_AND_MAC, WARN_TAG_SIZE]],
'hmac-sha256@ssh.com': [[], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha512': [[], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha512@ssh.com': [[], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-md5': [['2.1.0,d0.28', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_ENCRYPT_AND_MAC, WARN_HASH_WEAK]],
'hmac-md5-96': [['2.5.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_ENCRYPT_AND_MAC, WARN_HASH_WEAK]],
'hmac-ripemd': [[], [FAIL_DEPRECATED_MAC], [WARN_OPENSSH72_LEGACY, WARN_ENCRYPT_AND_MAC]],
'hmac-ripemd160': [['2.5.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_ENCRYPT_AND_MAC]],
'hmac-ripemd160@openssh.com': [['2.1.0', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_ENCRYPT_AND_MAC]],
'umac-64@openssh.com': [['4.7'], [], [WARN_ENCRYPT_AND_MAC, WARN_TAG_SIZE]],
'umac-128@openssh.com': [['6.2'], [], [WARN_ENCRYPT_AND_MAC]],
'hmac-sha1-etm@openssh.com': [['6.2'], [], [WARN_HASH_WEAK]],
'hmac-sha1-96-etm@openssh.com': [['6.2', '6.6', None], [FAIL_OPENSSH67_UNSAFE], [WARN_HASH_WEAK]],
'hmac-sha2-256-96-etm@openssh.com': [[], [], [WARN_TAG_SIZE_96]], # Despite the @openssh.com tag, it doesn't appear that this was ever shipped with OpenSSH; it is only implemented in AsyncSSH (?).
'hmac-sha2-512-96-etm@openssh.com': [[], [], [WARN_TAG_SIZE_96]], # Despite the @openssh.com tag, it doesn't appear that this was ever shipped with OpenSSH; it is only implemented in AsyncSSH (?).
'hmac-sha2-256-etm@openssh.com': [['6.2']],
'hmac-sha2-512-etm@openssh.com': [['6.2']],
'hmac-md5-etm@openssh.com': [['6.2', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_HASH_WEAK]],
'hmac-md5-96-etm@openssh.com': [['6.2', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY, WARN_HASH_WEAK]],
'hmac-ripemd160-etm@openssh.com': [['6.2', '6.6', '7.1'], [FAIL_OPENSSH67_UNSAFE], [WARN_OPENSSH72_LEGACY]],
'umac-32@openssh.com': [[], [], [WARN_ENCRYPT_AND_MAC, WARN_TAG_SIZE]], # Despite having the @openssh.com suffix, this may never have shipped with OpenSSH (!).
'umac-64-etm@openssh.com': [['6.2'], [], [WARN_TAG_SIZE]],
'umac-96@openssh.com': [[], [], [WARN_ENCRYPT_AND_MAC]], # Despite having the @openssh.com suffix, this may never have shipped with OpenSSH (!).
'umac-128-etm@openssh.com': [['6.2']],
'aes128-gcm': [[]],
'aes256-gcm': [[]],
'chacha20-poly1305@openssh.com': [[]], # Despite the @openssh.com tag, this was never shipped as a MAC in OpenSSH (only as a cipher); it is only implemented as a MAC in Syncplify.
'crypticore-mac@ssh.com': [[], [FAIL_UNPROVEN]],
}
} # type: Dict[str, Dict[str, List[List[Optional[str]]]]]
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