def _fromString_PRIVATE_LSH(Class, data):
"""
Return a private key corresponding to this LSH private key string.
The LSH private key string format is::
<s-expression: ('private-key', (<key type>, (<name>, <value>)+))>
The names for a RSA (key type 'rsa-pkcs1-sha1') key are: n, e, d, p, q.
The names for a DSA (key type 'dsa') key are: y, g, p, q, x.
@type data: C{str}
@return: a {Crypto.PublicKey.pubkey.pubkey} object
@raises BadKeyError: if the key type is unknown
"""
sexp = sexpy.parse(data)
assert sexp[0] == 'private-key'
kd = {}
for name, data in sexp[1][1:]:
kd[name] = common.getMP(common.NS(data))[0]
if sexp[1][0] == 'dsa':
assert len(kd) == 5, len(kd)
return Class(
DSA.construct((kd['y'], kd['g'], kd['p'], kd['q'], kd['x'])))
elif sexp[1][0] == 'rsa-pkcs1':
assert len(kd) == 8, len(kd)
if kd['p'] > kd['q']: # make p smaller than q
kd['p'], kd['q'] = kd['q'], kd['p']
return Class(
RSA.construct((kd['n'], kd['e'], kd['d'], kd['p'], kd['q'])))
else:
raise BadKeyError('unknown lsh key type %s' % sexp[1][0])
def _fromString_PRIVATE_LSH(cls, data):
"""
Return a private key corresponding to this LSH private key string.
The LSH private key string format is::
<s-expression: ('private-key', (<key type>, (<name>, <value>)+))>
The names for a RSA (key type 'rsa-pkcs1-sha1') key are: n, e, d, p, q.
The names for a DSA (key type 'dsa') key are: y, g, p, q, x.
@type data: L{bytes}
@param data: The key data.
@return: A new key.
@rtype: L{twisted.conch.ssh.keys.Key}
@raises BadKeyError: if the key type is unknown
"""
sexp = sexpy.parse(data)
assert sexp[0] == b'private-key'
kd = {}
for name, data in sexp[1][1:]:
kd[name] = common.getMP(common.NS(data))[0]
if sexp[1][0] == b'dsa':
assert len(kd) == 5, len(kd)
return cls._fromDSAComponents(
y=kd[b'y'], g=kd[b'g'], p=kd[b'p'], q=kd[b'q'], x=kd[b'x'])
elif sexp[1][0] == b'rsa-pkcs1':
assert len(kd) == 8, len(kd)
if kd[b'p'] > kd[b'q']: # Make p smaller than q
kd[b'p'], kd[b'q'] = kd[b'q'], kd[b'p']
return cls._fromRSAComponents(
n=kd[b'n'], e=kd[b'e'], d=kd[b'd'], p=kd[b'p'], q=kd[b'q'])
else:
raise BadKeyError('unknown lsh key type %s' % (sexp[1][0],))
def _fromString_PRIVATE_LSH(Class, data):
"""
Return a private key corresponding to this LSH private key string.
The LSH private key string format is::
<s-expression: ('private-key', (<key type>, (<name>, <value>)+))>
The names for a RSA (key type 'rsa-pkcs1-sha1') key are: n, e, d, p, q.
The names for a DSA (key type 'dsa') key are: y, g, p, q, x.
@type data: C{str}
@return: a {Crypto.PublicKey.pubkey.pubkey} object
@raises BadKeyError: if the key type is unknown
"""
sexp = sexpy.parse(data)
assert sexp[0] == 'private-key'
kd = {}
for name, data in sexp[1][1:]:
kd[name] = common.getMP(common.NS(data))[0]
if sexp[1][0] == 'dsa':
assert len(kd) == 5, len(kd)
return Class(DSA.construct((kd['y'], kd['g'], kd['p'],
kd['q'], kd['x'])))
elif sexp[1][0] == 'rsa-pkcs1':
assert len(kd) == 8, len(kd)
if kd['p'] > kd['q']: # make p smaller than q
kd['p'], kd['q'] = kd['q'], kd['p']
return Class(RSA.construct((kd['n'], kd['e'], kd['d'],
kd['p'], kd['q'])))
else:
raise BadKeyError('unknown lsh key type %s' % sexp[1][0])
def _fromString_PUBLIC_LSH(cls, data):
"""
Return a public key corresponding to this LSH public key string.
The LSH public key string format is::
<s-expression: ('public-key', (<key type>, (<name, <value>)+))>
The names for a RSA (key type 'rsa-pkcs1-sha1') key are: n, e.
The names for a DSA (key type 'dsa') key are: y, g, p, q.
@type data: L{bytes}
@param data: The key data.
@return: A new key.
@rtype: L{twisted.conch.ssh.keys.Key}
@raises BadKeyError: if the key type is unknown
"""
sexp = sexpy.parse(decodebytes(data[1:-1]))
assert sexp[0] == b'public-key'
kd = {}
for name, data in sexp[1][1:]:
kd[name] = common.getMP(common.NS(data))[0]
if sexp[1][0] == b'dsa':
return cls._fromDSAComponents(
y=kd[b'y'], g=kd[b'g'], p=kd[b'p'], q=kd[b'q'])
elif sexp[1][0] == b'rsa-pkcs1-sha1':
return cls._fromRSAComponents(n=kd[b'n'], e=kd[b'e'])
else:
raise BadKeyError('unknown lsh key type %s' % (sexp[1][0],))
def _fromString_PUBLIC_LSH(Class, data):
"""
Return a public key corresponding to this LSH public key string.
The LSH public key string format is::
<s-expression: ('public-key', (<key type>, (<name, <value>)+))>
The names for a RSA (key type 'rsa-pkcs1-sha1') key are: n, e.
The names for a DSA (key type 'dsa') key are: y, g, p, q.
@type data: C{bytes}
@return: a C{Crypto.PublicKey.pubkey.pubkey} object
@raises BadKeyError: if the key type is unknown
"""
sexp = sexpy.parse(base64.decodestring(data[1:-1]))
assert sexp[0] == b'public-key'
kd = {}
for name, data in sexp[1][1:]:
kd[name] = common.getMP(common.NS(data))[0]
if sexp[1][0] == b'dsa':
return Class(
DSA.construct((kd[b'y'], kd[b'g'], kd[b'p'], kd[b'q'])))
elif sexp[1][0] == b'rsa-pkcs1-sha1':
return Class(RSA.construct((kd[b'n'], kd[b'e'])))
else:
raise BadKeyError('unknown lsh key type %s' % (sexp[1][0], ))
def _fromString_PRIVATE_LSH(cls, data):
"""
Return a private key corresponding to this LSH private key string.
The LSH private key string format is::
<s-expression: ('private-key', (<key type>, (<name>, <value>)+))>
The names for a RSA (key type 'rsa-pkcs1-sha1') key are: n, e, d, p, q.
The names for a DSA (key type 'dsa') key are: y, g, p, q, x.
@type data: L{bytes}
@param data: The key data.
@return: A new key.
@rtype: L{twisted.conch.ssh.keys.Key}
@raises BadKeyError: if the key type is unknown
"""
sexp = sexpy.parse(data)
assert sexp[0] == b'private-key'
kd = {}
for name, data in sexp[1][1:]:
kd[name] = common.getMP(common.NS(data))[0]
if sexp[1][0] == b'dsa':
assert len(kd) == 5, len(kd)
return cls._fromDSAComponents(
y=kd[b'y'], g=kd[b'g'], p=kd[b'p'], q=kd[b'q'], x=kd[b'x'])
elif sexp[1][0] == b'rsa-pkcs1':
assert len(kd) == 8, len(kd)
if kd[b'p'] > kd[b'q']: # Make p smaller than q
kd[b'p'], kd[b'q'] = kd[b'q'], kd[b'p']
return cls._fromRSAComponents(
n=kd[b'n'], e=kd[b'e'], d=kd[b'd'], p=kd[b'p'], q=kd[b'q'])
else:
raise BadKeyError('unknown lsh key type %s' % (sexp[1][0],))
def _fromString_PUBLIC_LSH(cls, data):
"""
Return a public key corresponding to this LSH public key string.
The LSH public key string format is::
<s-expression: ('public-key', (<key type>, (<name, <value>)+))>
The names for a RSA (key type 'rsa-pkcs1-sha1') key are: n, e.
The names for a DSA (key type 'dsa') key are: y, g, p, q.
@type data: L{bytes}
@param data: The key data.
@return: A new key.
@rtype: L{twisted.conch.ssh.keys.Key}
@raises BadKeyError: if the key type is unknown
"""
sexp = sexpy.parse(base64.decodestring(data[1:-1]))
assert sexp[0] == b'public-key'
kd = {}
for name, data in sexp[1][1:]:
kd[name] = common.getMP(common.NS(data))[0]
if sexp[1][0] == b'dsa':
return cls._fromDSAComponents(
y=kd[b'y'], g=kd[b'g'], p=kd[b'p'], q=kd[b'q'])
elif sexp[1][0] == b'rsa-pkcs1-sha1':
return cls._fromRSAComponents(n=kd[b'n'], e=kd[b'e'])
else:
raise BadKeyError('unknown lsh key type %s' % (sexp[1][0],))
def _fromString_PUBLIC_LSH(Class, data):
"""
Return a public key corresponding to this LSH public key string.
The LSH public key string format is::
<s-expression: ('public-key', (<key type>, (<name, <value>)+))>
The names for a RSA (key type 'rsa-pkcs1-sha1') key are: n, e.
The names for a DSA (key type 'dsa') key are: y, g, p, q.
@type data: C{str}
@return: a C{Crypto.PublicKey.pubkey.pubkey} object
@raises BadKeyError: if the key type is unknown
"""
sexp = sexpy.parse(base64.decodestring(data[1:-1]))
assert sexp[0] == 'public-key'
kd = {}
for name, data in sexp[1][1:]:
kd[name] = common.getMP(common.NS(data))[0]
if sexp[1][0] == 'dsa':
return Class(DSA.construct((kd['y'], kd['g'], kd['p'], kd['q'])))
elif sexp[1][0] == 'rsa-pkcs1-sha1':
return Class(RSA.construct((kd['n'], kd['e'])))
else:
raise BadKeyError('unknown lsh key type %s' % sexp[1][0])
