def __init__(self, ssh_public_key):
"""
Extracts the useful ED25519 Public Key information from an SSH Public Key file.
:param ssh_public_key: SSH Public Key file contents. (i.e. 'ssh-ed25519 AAAAB3NzaC1yc2E..').
"""
super(ED25519PublicKey, self).__init__()
self.type = SSHPublicKeyType.ED25519
split_ssh_public_key = ssh_public_key.split(' ')
split_key_len = len(split_ssh_public_key)
# is there a key comment at the end?
if split_key_len > 2:
self.key_comment = ' '.join(split_ssh_public_key[2:])
else:
self.key_comment = ''
# hazmat does not support ed25519 so we have out own loader based on serialization.load_ssh_public_key
if split_key_len < 2:
raise ValueError(
'Key is not in the proper format or contains extra data.')
key_type = split_ssh_public_key[0]
key_body = split_ssh_public_key[1]
if key_type != SSHPublicKeyType.ED25519:
raise TypeError("Public Key is not the correct type or format")
try:
decoded_data = base64.b64decode(key_body)
except TypeError:
raise ValueError('Key is not in the proper format.')
inner_key_type, rest = serialization._ssh_read_next_string(
decoded_data)
if inner_key_type != key_type:
raise ValueError(
'Key header and key body contain different key type values.')
# ed25519 public key is a single string https://tools.ietf.org/html/rfc8032#section-5.1.5
self.a, rest = serialization._ssh_read_next_string(rest)
key_bytes = base64.b64decode(split_ssh_public_key[1])
fingerprint = hashlib.md5(key_bytes).hexdigest()
self.fingerprint = 'ED25519 ' + ':'.join(
fingerprint[i:i + 2] for i in range(0, len(fingerprint), 2))
def __init__(self, ssh_public_key):
"""
Extracts the useful ED25519 Public Key information from an SSH Public Key file.
:param ssh_public_key: SSH Public Key file contents. (i.e. 'ssh-ed25519 AAAAB3NzaC1yc2E..').
"""
super(ED25519PublicKey, self).__init__()
self.type = SSHPublicKeyType.ED25519
split_ssh_public_key = ssh_public_key.split(' ')
split_key_len = len(split_ssh_public_key)
# is there a key comment at the end?
if split_key_len > 2:
self.key_comment = ' '.join(split_ssh_public_key[2:])
else:
self.key_comment = ''
# hazmat does not support ed25519 so we have out own loader based on serialization.load_ssh_public_key
if split_key_len < 2:
raise ValueError(
'Key is not in the proper format or contains extra data.')
key_type = split_ssh_public_key[0]
key_body = split_ssh_public_key[1]
if key_type != SSHPublicKeyType.ED25519:
raise TypeError("Public Key is not the correct type or format")
try:
decoded_data = base64.b64decode(key_body)
except TypeError:
raise ValueError('Key is not in the proper format.')
inner_key_type, rest = serialization._ssh_read_next_string(decoded_data)
if inner_key_type != key_type.encode("utf-8"):
raise ValueError(
'Key header and key body contain different key type values.'
)
# ed25519 public key is a single string https://tools.ietf.org/html/rfc8032#section-5.1.5
self.a, rest = serialization._ssh_read_next_string(rest)
key_bytes = base64.b64decode(split_ssh_public_key[1])
fingerprint = hashlib.md5(key_bytes).hexdigest()
self.fingerprint = 'ED25519 ' + ':'.join(
fingerprint[i:i + 2] for i in range(0, len(fingerprint), 2))
def extract_nonce_from_cert(cert_file):
cert = cert_file.split(' ')[1]
cert_type, cert_remainder = _ssh_read_next_string(base64.b64decode(cert))
nonce, cert_remainder = _ssh_read_next_string(cert_remainder)
return nonce
def extract_nonce_from_cert(cert_file):
cert = cert_file.split(' ')[1]
cert_type, cert_remainder = _ssh_read_next_string(base64.b64decode(cert))
nonce, cert_remainder = _ssh_read_next_string(cert_remainder)
return nonce