export declare function decodePostResponse(message: string): string;
/**
 * See https://docs.oasis-open.org/security/saml/v2.0/saml-bindings-2.0-os.pdf 3.4.4.1 DEFLATE Encoding
 * TLDR: xml -> deflate -> base64 -> encodeURI
 * NB: querystring does the uri encoding
 */
export declare function encodeRedirectParameters(xml: string, RelayState?: string): Promise<unknown>;
/**
 * See https://docs.oasis-open.org/security/saml/v2.0/saml-bindings-2.0-os.pdf 3.5.4 Message Encoding
 * TLDR: xml -> base64 -> application/x-www-form-urlencoded
 * NB: This does not handle the final step of form encoding.
 *     The consumer should insert the data into html form fields and submit.
 */
export declare function encodePostFormFields(xml: string, RelayState?: string): {
    SAMLRequest: string;
    RelayState: string | undefined;
};