TXFMSHA1.hpp

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/*
 * Copyright 2002-2005 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * XSEC
 *
 * TXFMSHA1 := Class that performs a SHA1 transform
 *
 * $Id: TXFMSHA1.hpp,v 1.10 2005/02/20 10:37:31 blautenb Exp $
 *
 */

// XSEC Includes

#include <xsec/transformers/TXFMBase.hpp>
#include <xsec/enc/XSECCryptoProvider.hpp>

class DSIG_EXPORT TXFMSHA1 : public TXFMBase {

private:

    XSECCryptoHash      * mp_h;                         // To hold the hash
    unsigned char       md_value[CRYPTO_MAX_HASH_SIZE]; // Final output
    unsigned int        md_len;                         // Length of digest

    unsigned int        toOutput;                       // Amount still to output

public:

    TXFMSHA1(XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument *doc, hashMethod hm = HASH_SHA1, XSECCryptoKey * key = NULL);
    ~TXFMSHA1();

    // Methods to get tranform output type and input requirement

    virtual TXFMBase::ioType getInputType(void);
    virtual TXFMBase::ioType getOutputType(void);
    virtual nodeType getNodeType(void);

    // Methods to set input data

    virtual void setInput(TXFMBase * inputT);

    // Methods to get output data

    virtual unsigned int readBytes(XMLByte * const toFill, const unsigned int maxToFill);
    virtual XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument *getDocument();
    virtual XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *getFragmentNode();
    virtual const XMLCh * getFragmentId();
    
private:
    TXFMSHA1();
};

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