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util.x509: And functions for converting between DER and PEM

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Kim Alvefur 2014-04-24 23:38:47 +02:00
parent a4b456c857
commit 0a930566b3
1 changed files with 20 additions and 0 deletions
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20
util/x509.lua
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@ -20,6 +20,7 @@
local nameprep = require "util.encodings".stringprep.nameprep;
local idna_to_ascii = require "util.encodings".idna.to_ascii;
local base64 = require "util.encodings".base64;
local log = require "util.logger".init("x509");
local pairs, ipairs = pairs, ipairs;
local s_format = string.format;
@ -214,4 +215,23 @@ function verify_identity(host, service, cert)
return false
end
local pat = "%-%-%-%-%-BEGIN ([A-Z ]+)%-%-%-%-%-\r?\n"..
"([0-9A-Za-z+/=\r\n]*)\r?\n%-%-%-%-%-END %1%-%-%-%-%-";
function pem2der(pem)
local typ, data = pem:match(pat);
if typ and data then
return base64.decode(data), typ;
end
end
local wrap = ('.'):rep(64);
local envelope = "-----BEGIN %s-----\n%s\n-----END %s-----\n"
function der2pem(data, typ)
typ = typ and typ:upper() or "CERTIFICATE";
data = base64.encode(data);
return s_format(envelope, typ, data:gsub(wrap, '%0\n', (#data-1)/64), typ);
end
return _M;