Some OpenSocial containers use xoauth_security_token to sign requests instead of oauth_token and oauth_token_secret .
Is XOauth an alternative to OAuth? (*) Who is behind XOauth and where is the official specification?
Random Googling leads me to xoauth.py from the google-mail-xoauth-tools project, which simply points to its "XOAUTH authentication utilities."
(*) In addition, this should not be, because the container uses other oauth_xxx parameters next to xoauth_xxx.
oauth
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