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Sign and validate JSON objects!

signobj–Trust your JSON

signobj protects your data with SHA-1 HMAC & a 16 bit salt.

Signs data with secret, you can also pass in some extra hidden data that is used when hashing. This can be useful if you're creating an access token, and you want it to become invalid when they change their password, and also don't want the password with the public data.

This function returns a Q promise, that resolves the signed & salted data.

Checks to make sure your data is valid. The promise, if resolves successfully, will return your original data.