/*
* This file is part of rasdaman community.
*
* Rasdaman community is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
/
/**
 * SOURCE: ras_crypto.hh
 *
 * MODULE: rasmgr
 * CLASS:  
 *
 * PURPOSE:
 *   Interface to OpenSSL MD5 - functions
 *    
 * COMMENTS:
 *  		None
*/

#include "ras_crypto.hh"

#if defined(SOLARIS)
#include <strings.h>
#else
#include <string.h>
#endif


bool testIsMessageDigestAvailable(const char *mdName)
  {
    EVP_MD_CTX mdctx;
    const EVP_MD *md;
    
    OpenSSL_add_all_digests();

    md = EVP_get_digestbyname(mdName);//"MD5");
    
    if(!md) return false;
    return true;
   }         

int messageDigest(const char *input,char *output,const char *mdName)
  {      
    EVP_MD_CTX mdctx;
    const EVP_MD *md;
    unsigned int md_len, i;
    unsigned char md_value[100];

    OpenSSL_add_all_digests();

    md = EVP_get_digestbyname(mdName);
    
    if(!md) return 0;
               
    EVP_DigestInit(&mdctx, md);
    EVP_DigestUpdate(&mdctx,input, strlen(input));
    EVP_DigestFinal(&mdctx, md_value, &md_len);

    for(i = 0; i < md_len; i++) sprintf(output+i+i,"%02x", md_value[i]);
   
    return strlen(output);
   }