1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
module Net
module SSH
module Transport
# A cipher that does nothing but pass the data through, unchanged. This
# keeps things in the code nice and clean when a cipher has not yet been
# determined (i.e., during key exchange).
class IdentityCipher
class <<self
# A default block size of 8 is required by the SSH2 protocol.
def block_size
8
end
# Returns an arbitrary integer.
def iv_len
4
end
# Does nothing. Returns self.
def encrypt
self
end
# Does nothing. Returns self.
def decrypt
self
end
# Passes its single argument through unchanged.
def update(text)
text
end
# Returns the empty string.
def final
""
end
# The name of this cipher, which is "identity".
def name
"identity"
end
# Does nothing. Returns nil.
def iv=(v)
nil
end
# Does nothing. Returns self.
def reset
self
end
end
end
end
end
end
|
