/usr/include/xsec/enc/OpenSSL/OpenSSLCryptoHash.hpp is in libxml-security-c-dev 1.6.1-1build1.
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
*
* OpenSSLCryptoHash := OpenSSL Implementation of SHA1
*
* Author(s): Berin Lautenbach
*
* $Id: OpenSSLCryptoHash.hpp 1125514 2011-05-20 19:08:33Z scantor $
*
*/
#ifndef OPENSSLCRYPTOHASHSHA1_INCLUDE
#define OPENSSLCRYPTOHASHSHA1_INCLUDE
#include <xsec/framework/XSECDefs.hpp>
#include <xsec/enc/XSECCryptoHash.hpp>
// OpenSSL Includes
#if defined (XSEC_HAVE_OPENSSL)
# include <openssl/evp.h>
/**
* @ingroup opensslcrypto
*/
/**
* \brief Interface definition for Hash functions.
*
* Uses the OpenSSL EVP_digest functions to implement the various
* hash functions required by the OpenSSL library.
*
*/
class DSIG_EXPORT OpenSSLCryptoHash : public XSECCryptoHash {
public :
/** @name Constructors and Destructors */
//@{
OpenSSLCryptoHash(XSECCryptoHash::HashType alg);
virtual ~OpenSSLCryptoHash();
//@}
/** @name HMAC Functions */
//@{
/**
*\brief
*
* Does nothing. If the required function is an HMAC function,
* then OpenSSLCryptoHashHMAC should be used.
*
* @param key The key the HMAC function should use.
*/
virtual void setKey(XSECCryptoKey * key) {}
//@}
/** @name Digest/Hash functions */
//@{
/**
* \brief Rest the hash function
*
* Re-initialises the digest structure.
*/
virtual void reset(void);
/**
* \brief Hash some data.
*
* Take length bytes of data from the data buffer and update the hash
* that already exists. This function may (and normally will) be called
* many times for large blocks of data.
*
* @param data The buffer containing the data to be hashed.
* @param length The number of bytes to be read from data
*/
virtual void hash(unsigned char * data,
unsigned int length);
/**
* \brief Finish up a Digest operation and read the result.
*
* This call tells the CryptoHash object that the input is complete and
* to finalise the Digest. The output of the digest is read into the
* hash buffer (at most maxLength bytes)
*
* @param hash The buffer the hash should be read into.
* @param maxLength The maximum number of bytes to be read into hash
* @returns The number of bytes copied into the hash buffer
*/
virtual unsigned int finish(unsigned char * hash,
unsigned int maxLength);// Finish and get hash
//@}
/** @name Information functions */
//@{
/**
*\brief
*
* Determine the hash type of this object
*
* @returns The hash type
*/
virtual HashType getHashType(void) const;
/**
* \brief Get OpenSSL hash context structure
*/
EVP_MD_CTX * getOpenSSLEVP_MD_CTX(void) {return &m_mdctx;}
//@}
private:
// Not implemented constructors
OpenSSLCryptoHash();
EVP_MD_CTX m_mdctx; // Context for digest
const EVP_MD * mp_md; // Digest instance
unsigned char m_mdValue[EVP_MAX_MD_SIZE]; // Final output
unsigned int m_mdLen; // Length of digest
HashType m_hashType; // What type of hash is this?
};
#endif /* XSEC_HAVE_OPENSSL */
#endif /* OPENSSLCRYPTOHASHSHA1_INCLUDE */
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