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oauthlib.oauth1.rfc5849
~~~~~~~~~~~~~~

This module is an implementation of various logic needed
for signing and checking OAuth 1.0 RFC 5849 requests.

It supports all three standard signature methods defined in RFC 5849:

- HMAC-SHA1
- RSA-SHA1
- PLAINTEXT

It also supports signature methods that are not defined in RFC 5849. These are
based on the standard ones but replace SHA-1 with the more secure SHA-256:

- HMAC-SHA256
- RSA-SHA256

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        :param callback_uri: Callback used when obtaining request token.
        :param signature_method: SIGNATURE_HMAC, SIGNATURE_RSA or SIGNATURE_PLAINTEXT.
        :param signature_type: SIGNATURE_TYPE_AUTH_HEADER (default),
                               SIGNATURE_TYPE_QUERY or SIGNATURE_TYPE_BODY
                               depending on where you want to embed the oauth
                               credentials.
        :param rsa_key: RSA key used with SIGNATURE_RSA.
        :param verifier: Verifier used when obtaining an access token.
        :param realm: Realm (scope) to which access is being requested.
        :param encoding: If you provide non-unicode input you may use this
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        :param decoding: If you wish that the returned uri, headers and body
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        If the body does contain parameters, it will be returned as a properly-
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