YouTube - Encrypted cookie string

Posted by Robertof on Stack Overflow See other posts from Stack Overflow or by Robertof
Published on 2010-04-28T21:31:53Z Indexed on 2010/04/28 21:37 UTC
Read the original article Hit count: 224

Filed under:

encryption

|

encrypt

|

youtube

|

cookie

|

php

Hello!
I'm new to Stack Overflow.

I'm building a YouTube Downloader in PHP. But YouTube have some IP-checks.
Because the PHP file is on a remote server, the ip of the server != the ip of the user and the video-download fails.
So, maybe I've found a solution. YouTube sends a cookie with an encrypted string, which is the user IP. I need to know the encrypted-string algorithm and know how to crypt a string with this.
Here there is the string: nQ0CrJmASJk .
It could be base64, but when I try to decode it with base64_decode, it gives me strange characters.
You could check the cookie by requesting the main page of youtube, and check the headers "Set-Cookie". You will found a cookie with the name "VISITOR_INFO1_LIVE". Here there is the encrypyed string.
Anyone knows what is the algorithm? Thanks.
PS: sorry for my bad english.

Cheers,
Roberto.

© Stack Overflow or respective owner

Related posts about encryption

SQL SERVER – History of SQL Server Database Encryption

as seen on SQL Authority - Search for 'SQL Authority'
I recently met Michael Coles and Rodeney Landrum the author of one of the kind book Expert SQL Server 2008 Encryption at SQLPASS in Seattle. During the conversation we ended up how Microsoft is evolving encryption technology. The same discussion lead to talking about history of encryption tools in… >>> More
Encryption is hard: AES encryption to Hex

as seen on Stack Overflow - Search for 'Stack Overflow'
So, I've got an app at work that encrypts a string using ColdFusion. ColdFusion's bulit-in encryption helpers make it pretty simple: encrypt('string_to_encrypt','key','AES','HEX') What I'm trying to do is use Ruby to create the same encrypted string as this ColdFusion script is creating. Unfortunately… >>> More
Confused about encryption with public and private keys (which to use for encryption)

as seen on Stack Overflow - Search for 'Stack Overflow'
I am making a licensing system when clients ask my server for a license and I send them a license if they are permitted to have one. On my current system I encrypt the license using a single private key and have the public key embedded into the client application that they use to decrypt the license… >>> More
Encryption Product Keys : Public and Private key encryption

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to generate and validate product keys and have been thinking about using a public/private key system. I generate our product keys based on a client name (which could be a variable length string) a 6 digit serial number. It would be good if the product key would be of a manageable length… >>> More
Software tools to automatically decrypt a file, whose encryption algorithm (and/or encryption keys)

as seen on Stack Overflow - Search for 'Stack Overflow'
I have an idea for encryption that I could program fairly easily to encrypt some local text file. Given that my approach is novel, and does not use any of the industry standard encryption techniques, would I be able to test the strength of my encryption using 'cracker' apps or suchlike? Or do all… >>> More

Related posts about encrypt

compare previous ENCRYPT() call with new ENCRYPT() call mysql

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm storing a string in mysql with the ENCRYPT() function. I want to fetch a row where that string is matched, but the new ENCRYPT() call gives me a different value, so they never match. This is expected as i'm not (and can't) give it a consistent salt: http://dev.mysql.com/doc/refman/5.0/en/encryption-functions… >>> More
Can an external server be used to encrypt all traffic

as seen on Server Fault - Search for 'Server Fault'
My work takes me to a number of places with WiFi connection. I want to be able to encrypt the traffic between my laptop and the internet. Can I do this with a VPN server? What is the best way to get this done? Is there a secure and reliable service that will help me do this? This is fairly important… >>> More
Iomega eGo Encrypt Plus Encrypted Partition not mounting properly says "local disk"

as seen on Super User - Search for 'Super User'
I'm working with an Iomega eGo 500gb Encrypt Plus portable drive. When I first set it up and installed the software and set a user password everything worked fine. The partition labeled "IomegaHDD" mounted properly and I could access the free space. Then I changed the ADMIN password which required… >>> More
My C disk show 33gb less space then i have bcs of hidden or encrypted files i cant find

as seen on Super User - Search for 'Super User'
Hello I was hoping some one could help me my drive has 92gbs used space, 95gbs free out of 220 partition 33gbs in the air i cant find, already did cleanup, emptied recycle bin, history and temp files also and I believe sin Ive seen before its possibly space my brother used with a program he uses to… >>> More
How to encrypt Amazon CloudFront signature for private content access using canned policy

as seen on Stack Overflow - Search for 'Stack Overflow'
Has anyone using .net actually worked out how to successfully sign a signature to use with CloudFront private content? After a couple of days of attempts all I can get is Access Denied. I have been working with variations of the following code and also tried using OpenSSL.Net and AWSSDK but that… >>> More