Samsung Android FOTA Authentification

1. GT-I9100 requests:
http://www.ospserver.net/security/sso/initialize/time
Headers:
    [User-Agent] => SAMSUNG-Android
    [Accept] => *, */*
    [Accept-Encoding] => identity
    [Content-Type] => text/xml
    [Connection] => keep-alive
    [x-osp-version] => v1
    [Authorization] => oauth_consumer_key=j5p7ll8g33,oauth_signature_method=HmacSHA1,oauth_timestamp=1350658649,oauth_nonce=92c6c818a6,oauth_version=1.0,oauth_signature=BaR5YvlG8VZdUTOOfQ9Zpr3TwIg=
    [Host] => www.ospserver.net:80
Data:
	NULL
Response:
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?><initializeResult><currentServerTime>1350658649660</currentServerTime></initializeResult>

2. GT-I9100 POST data:
https://www.ospserver.net/device/fumo/device/
Headers:
    [User-Agent] => SAMSUNG-Android
    [Accept] => *, */*
    [Accept-Encoding] => identity
    [Content-Type] => text/xml
    [Connection] => keep-alive
    [x-osp-version] => v1
    [Authorization] => oauth_consumer_key=2cbmvps5z4,oauth_signature_method=HmacSHA1,oauth_timestamp=1350659504,oauth_nonce=0c5f5af449,oauth_version=1.0,oauth_signature=Mvh2Xembl1Jh4XPBqbsHtsv6ggI=
    [Content-Length] => 494
    [Host] => www.ospserver.net:443
Data:
 <?xml version='1.0' encoding='UTF-8' standalone='yes' ?><FumoDeviceVO><deviceTypeCode>PHONE DEVICE</deviceTypeCode><deviceModelID>GT-I9100</deviceModelID><deviceUniqueID>IMEI:xxxxxx</deviceUniqueID><devicePhysicalAddressText>IMEI:xxxxxx</devicePhysicalAddressText><phoneNumberText></phoneNumberText><mobileCountryCode>232</mobileCountryCode><mobileNetworkCode></mobileNetworkCode><customerCode>DBT</customerCode><deviceName>GT-I9100</deviceName><terms>Y</terms></FumoDeviceVO>
Response:
 <?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<versioninfo>
<url>http://fota-cloud-dn.ospserver.net/firmware/</url>
<Polling>
<filename>version.xml</filename>
</Polling>
</versioninfo>