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Add support for ECDSA to ssh-hostkey.nse.

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Patch by Adam Števko. http://seclists.org/nmap-dev/2012/q4/181
This commit is contained in:
david
2012-10-31 17:57:26 +00:00
parent d5f3fb6745
commit 4c298e6e67
3 changed files with 20 additions and 0 deletions
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2
CHANGELOG
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@@ -1,5 +1,7 @@
# Nmap Changelog ($Id$); -*-text-*-
o [NSE] Added support for ECDSA keys to ssh-hostkey.nse. [Adam Števko]
o [Nsock] Added new poll and kqueue engines. [Henri Doreau]
o [Zenmap] Corrected some typos in the Japanese translation.

9
nselib/ssh2.lua
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@@ -215,6 +215,15 @@ fetch_host_key = function( host, port, key_type )
local n
_, _, _, n = bin.unpack( ">aaa", public_host_key )
bits = openssl.bignum_bin2bn( n ):num_bits()
elseif key_type == 'ecdsa-sha2-nistp256' then
algorithm = "ECDSA"
bits = "256"
elseif key_type == 'ecdsa-sha2-nistp384' then
algorithm = "ECDSA"
bits = "384"
elseif key_type == 'ecdsa-sha2-nistp521' then
algorithm = "ECDSA"
bits = "521"
else
stdnse.print_debug( "Unsupported key type: %s", key_type )
end

9
scripts/ssh-hostkey.nse
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@@ -136,6 +136,15 @@ local function portaction(host, port)
key = ssh2.fetch_host_key( host, port, "ssh-rsa" )
if key then table.insert( keys, key ) end
key = ssh2.fetch_host_key( host, port, "ecdsa-sha2-nistp256" )
if key then table.insert( keys, key ) end
key = ssh2.fetch_host_key( host, port, "ecdsa-sha2-nistp384" )
if key then table.insert( keys, key ) end
key = ssh2.fetch_host_key( host, port, "ecdsa-sha2-nistp521" )
if key then table.insert( keys, key ) end
for _, key in ipairs( keys ) do
add_key_to_registry( host, key )
table.insert(output_tab, {