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OpenSSLCryptoHashHMAC.hpp

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00001 /*
00002  * Copyright 2002-2004 The Apache Software Foundation.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * imitations under the License.
00015  */
00016 
00017 /*
00018  * XSEC
00019  *
00020  * OpenSSLCryptoHashHMAC := OpenSSL Implementation of HMAC
00021  *
00022  * Author(s): Berin Lautenbach
00023  *
00024  * $Id: OpenSSLCryptoHashHMAC.hpp,v 1.7 2004/02/08 10:22:50 blautenb Exp $
00025  *
00026  */
00027 
00028 #ifndef OPENSSLCRYPTOHASHHMAC_INCLUDE
00029 #define OPENSSLCRYPTOHASHHMAC_INCLUDE
00030 
00031 #include <xsec/framework/XSECDefs.hpp>
00032 #include <xsec/enc/XSECCryptoHash.hpp>
00033 #include <xsec/utils/XSECSafeBuffer.hpp>
00034 
00035 // OpenSSL Includes
00036 #if defined (HAVE_OPENSSL)
00037 
00038 #include <openssl/evp.h>
00039 #include <openssl/hmac.h>
00040 
00054 class DSIG_EXPORT OpenSSLCryptoHashHMAC : public XSECCryptoHash {
00055 
00056 public :
00057 
00060 
00070     OpenSSLCryptoHashHMAC(XSECCryptoHash::HashType alg);
00071 
00078     virtual ~OpenSSLCryptoHashHMAC();
00079 
00081 
00084     
00094     virtual void        setKey(XSECCryptoKey * key);
00095 
00100     virtual const XMLCh * getProviderName() {return DSIGConstants::s_unicodeStrPROVOpenSSL;}
00101 
00103 
00105     //{@
00106 
00113     virtual void        reset(void);
00114 
00126     virtual void        hash(unsigned char * data, 
00127                              unsigned int length);
00141     virtual unsigned int finish(unsigned char * hash,
00142                                 unsigned int maxLength);// Finish and get hash
00143 
00145 
00148 
00157     virtual HashType getHashType(void);
00158 
00160 
00161 private:
00162 
00163     // Not implemented constructors
00164     OpenSSLCryptoHashHMAC();
00165 
00166     const EVP_MD        * mp_md;                        // Digest instance
00167     unsigned char       m_mdValue[EVP_MAX_MD_SIZE];     // Final output
00168     unsigned int        m_mdLen;                        // Length of digest
00169     HashType            m_hashType;                     // What type of hash is this?
00170     HMAC_CTX            m_hctx;                         // Context for HMAC
00171     safeBuffer          m_keyBuf;                       // The loaded key
00172     unsigned int        m_keyLen;                       // The loaded key length
00173     bool                m_initialised;
00174 
00175 };
00176 #endif /* HAVE_OPENSSL */
00177 #endif /* OPENSSLCRYPTOHASHHMAC_INCLUDE */

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