diff options
| author | Xusheng <xusheng@vector35.com> | 2021-07-01 12:34:30 +0800 |
|---|---|---|
| committer | Xusheng Li <xushengli@protonmail.com> | 2021-07-05 10:11:47 +0800 |
| commit | 13ff200ba134b8704f37eca99c42b70dab0d17dc (patch) | |
| tree | 876b3db3c53f704b31152aeaede1f2edc9d27b24 /python/examples/kaitai/ssh_public_key.py | |
| parent | 4039a800349dcd587833d3e27d9137e4649818f4 (diff) | |
Remove snippet and kaitai plugin. Note their individual links.
Diffstat (limited to 'python/examples/kaitai/ssh_public_key.py')
| -rw-r--r-- | python/examples/kaitai/ssh_public_key.py | 251 |
1 files changed, 0 insertions, 251 deletions
diff --git a/python/examples/kaitai/ssh_public_key.py b/python/examples/kaitai/ssh_public_key.py deleted file mode 100644 index bf1375d6..00000000 --- a/python/examples/kaitai/ssh_public_key.py +++ /dev/null @@ -1,251 +0,0 @@ -# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild - -from pkg_resources import parse_version -from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO -import collections - - -if parse_version(ks_version) < parse_version('0.7'): - raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version)) - -class SshPublicKey(KaitaiStruct): - """SSH public keys are encoded in a special binary format, typically represented - to end users as either one-liner OpenSSH format or multi-line PEM format - (commerical SSH). Text wrapper carries extra information about user who - created the key, comment, etc, but the inner binary is always base64-encoded - and follows the same internal format. - - This format spec deals with this internal binary format (called "blob" in - openssh sources) only. Buffer is expected to be raw binary and not base64-d. - Implementation closely follows code in OpenSSH. - - .. seealso:: - Source - https://github.com/openssh/openssh-portable/blob/master/sshkey.c#L1970 - """ - SEQ_FIELDS = ["key_name", "body"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['key_name']['start'] = self._io.pos() - self.key_name = self._root.Cstring(self._io, self, self._root) - self.key_name._read() - self._debug['key_name']['end'] = self._io.pos() - self._debug['body']['start'] = self._io.pos() - _on = self.key_name.value - if _on == u"ssh-rsa": - self.body = self._root.KeyRsa(self._io, self, self._root) - self.body._read() - elif _on == u"ecdsa-sha2-nistp256": - self.body = self._root.KeyEcdsa(self._io, self, self._root) - self.body._read() - elif _on == u"ssh-ed25519": - self.body = self._root.KeyEd25519(self._io, self, self._root) - self.body._read() - elif _on == u"ssh-dss": - self.body = self._root.KeyDsa(self._io, self, self._root) - self.body._read() - self._debug['body']['end'] = self._io.pos() - - class KeyRsa(KaitaiStruct): - """ - .. seealso:: - Source - https://github.com/openssh/openssh-portable/blob/master/sshkey.c#L2011-L2028 - """ - SEQ_FIELDS = ["rsa_e", "rsa_n"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['rsa_e']['start'] = self._io.pos() - self.rsa_e = self._root.Bignum2(self._io, self, self._root) - self.rsa_e._read() - self._debug['rsa_e']['end'] = self._io.pos() - self._debug['rsa_n']['start'] = self._io.pos() - self.rsa_n = self._root.Bignum2(self._io, self, self._root) - self.rsa_n._read() - self._debug['rsa_n']['end'] = self._io.pos() - - @property - def key_length(self): - """Key length in bits.""" - if hasattr(self, '_m_key_length'): - return self._m_key_length if hasattr(self, '_m_key_length') else None - - self._m_key_length = self.rsa_n.length_in_bits - return self._m_key_length if hasattr(self, '_m_key_length') else None - - - class KeyEd25519(KaitaiStruct): - """ - .. seealso:: - Source - https://github.com/openssh/openssh-portable/blob/master/sshkey.c#L2111-L2124 - """ - SEQ_FIELDS = ["len_pk", "pk"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['len_pk']['start'] = self._io.pos() - self.len_pk = self._io.read_u4be() - self._debug['len_pk']['end'] = self._io.pos() - self._debug['pk']['start'] = self._io.pos() - self.pk = self._io.read_bytes(self.len_pk) - self._debug['pk']['end'] = self._io.pos() - - - class KeyEcdsa(KaitaiStruct): - """ - .. seealso:: - Source - https://github.com/openssh/openssh-portable/blob/master/sshkey.c#L2060-L2103 - """ - SEQ_FIELDS = ["curve_name", "ec"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['curve_name']['start'] = self._io.pos() - self.curve_name = self._root.Cstring(self._io, self, self._root) - self.curve_name._read() - self._debug['curve_name']['end'] = self._io.pos() - self._debug['ec']['start'] = self._io.pos() - self.ec = self._root.EllipticCurve(self._io, self, self._root) - self.ec._read() - self._debug['ec']['end'] = self._io.pos() - - - class Cstring(KaitaiStruct): - """A integer-prefixed string designed to be read using `sshbuf_get_cstring` - and written by `sshbuf_put_cstring` routines in ssh sources. Name is an - obscure misnomer, as typically "C string" means a null-terminated string. - - .. seealso:: - Source - https://github.com/openssh/openssh-portable/blob/master/sshbuf-getput-basic.c#L181 - """ - SEQ_FIELDS = ["len", "value"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['len']['start'] = self._io.pos() - self.len = self._io.read_u4be() - self._debug['len']['end'] = self._io.pos() - self._debug['value']['start'] = self._io.pos() - self.value = (self._io.read_bytes(self.len)).decode(u"ASCII") - self._debug['value']['end'] = self._io.pos() - - - class KeyDsa(KaitaiStruct): - """ - .. seealso:: - Source - https://github.com/openssh/openssh-portable/blob/master/sshkey.c#L2036-L2051 - """ - SEQ_FIELDS = ["dsa_p", "dsa_q", "dsa_g", "dsa_pub_key"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['dsa_p']['start'] = self._io.pos() - self.dsa_p = self._root.Bignum2(self._io, self, self._root) - self.dsa_p._read() - self._debug['dsa_p']['end'] = self._io.pos() - self._debug['dsa_q']['start'] = self._io.pos() - self.dsa_q = self._root.Bignum2(self._io, self, self._root) - self.dsa_q._read() - self._debug['dsa_q']['end'] = self._io.pos() - self._debug['dsa_g']['start'] = self._io.pos() - self.dsa_g = self._root.Bignum2(self._io, self, self._root) - self.dsa_g._read() - self._debug['dsa_g']['end'] = self._io.pos() - self._debug['dsa_pub_key']['start'] = self._io.pos() - self.dsa_pub_key = self._root.Bignum2(self._io, self, self._root) - self.dsa_pub_key._read() - self._debug['dsa_pub_key']['end'] = self._io.pos() - - - class EllipticCurve(KaitaiStruct): - """Elliptic curve dump format used by ssh. In OpenSSH code, the following - routines are used to read/write it: - - * sshbuf_get_ec - * get_ec - - .. seealso:: - Source - https://github.com/openssh/openssh-portable/blob/master/sshbuf-getput-crypto.c#L90 - https://github.com/openssh/openssh-portable/blob/master/sshbuf-getput-crypto.c#L76 - """ - SEQ_FIELDS = ["len", "body"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['len']['start'] = self._io.pos() - self.len = self._io.read_u4be() - self._debug['len']['end'] = self._io.pos() - self._debug['body']['start'] = self._io.pos() - self.body = self._io.read_bytes(self.len) - self._debug['body']['end'] = self._io.pos() - - - class Bignum2(KaitaiStruct): - """Big integers serialization format used by ssh, v2. In the code, the following - routines are used to read/write it: - - * sshbuf_get_bignum2 - * sshbuf_get_bignum2_bytes_direct - * sshbuf_put_bignum2 - * sshbuf_get_bignum2_bytes_direct - - .. seealso:: - Source - https://github.com/openssh/openssh-portable/blob/master/sshbuf-getput-crypto.c#L35 - https://github.com/openssh/openssh-portable/blob/master/sshbuf-getput-basic.c#L431 - """ - SEQ_FIELDS = ["len", "body"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['len']['start'] = self._io.pos() - self.len = self._io.read_u4be() - self._debug['len']['end'] = self._io.pos() - self._debug['body']['start'] = self._io.pos() - self.body = self._io.read_bytes(self.len) - self._debug['body']['end'] = self._io.pos() - - @property - def length_in_bits(self): - """Length of big integer in bits. In OpenSSH sources, this corresponds to - `BN_num_bits` function. - """ - if hasattr(self, '_m_length_in_bits'): - return self._m_length_in_bits if hasattr(self, '_m_length_in_bits') else None - - self._m_length_in_bits = ((self.len - 1) * 8) - return self._m_length_in_bits if hasattr(self, '_m_length_in_bits') else None - - - |
