--- /dev/null
+--[[
+ * px5g - Embedded x509 key and certificate generator based on PolarSSL
+ *
+ * Copyright (C) 2009 Steven Barth <steven@midlink.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1 as published by the Free Software Foundation.
+]]--
+
+local nixio = require "nixio"
+local table = require "table"
+
+module "px5g.util"
+
+local preamble = {
+ key = "-----BEGIN RSA PRIVATE KEY-----",
+ cert = "-----BEGIN CERTIFICATE-----",
+ request = "-----BEGIN CERTIFICATE REQUEST-----"
+}
+
+local postamble = {
+ key = "-----END RSA PRIVATE KEY-----",
+ cert = "-----END CERTIFICATE-----",
+ request = "-----END CERTIFICATE REQUEST-----"
+}
+
+function der2pem(data, type)
+ local b64 = nixio.bin.b64encode(data)
+
+ local outdata = {preamble[type]}
+ for i = 1, #b64, 64 do
+ outdata[#outdata + 1] = b64:sub(i, i + 63)
+ end
+ outdata[#outdata + 1] = postamble[type]
+ outdata[#outdata + 1] = ""
+
+ return table.concat(outdata, "\n")
+end
+
+function pem2der(data)
+ local b64 = data:gsub({["\n"] = "", ["%-%-%-%-%-.-%-%-%-%-%-"] = ""})
+ return nixio.bin.b64decode(b64)
+end
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