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    @param pszRealm: The realm
    @param pszPassword: The password
    @param pszNonce: The nonce
    @param pszCNonce: The cnonce

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    @param pszDigestUri: The request URI.
    @param pszQop: The Quality-of-Protection value.
    @param pszHEntity: The hash of the entity body or L{None} if C{pszQop} is
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    Compute the digest for the given parameters.

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    @param pszNonce: The challenge nonce.
    @param pszNonceCount: The (client) nonce count value for this response.
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