svtools/source/misc1/PasswordHelper.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_svtools.hxx"
  33
  34
  35 #ifndef GCC
  36 #endif
  37 #include "PasswordHelper.hxx"
  38 #include <rtl/digest.h>
  39 #include <tools/string.hxx>
  40
  41 using namespace com::sun::star;
  42
  43 void SvPasswordHelper::GetHashPassword(uno::Sequence<sal_Int8>& rPassHash, const sal_Char* pPass, sal_uInt32 nLen)
  44 {
  45     rPassHash.realloc(RTL_DIGEST_LENGTH_SHA1);
  46
  47     rtlDigestError aError = rtl_digest_SHA1 (pPass, nLen, reinterpret_cast<sal_uInt8*>(rPassHash.getArray()), rPassHash.getLength());
  48     if (aError != rtl_Digest_E_None)
  49     {
  50         rPassHash.realloc(0);
  51     }
  52 }
  53
  54 void SvPasswordHelper::GetHashPasswordLittleEndian(uno::Sequence<sal_Int8>& rPassHash, const String& sPass)
  55 {
  56     xub_StrLen nSize(sPass.Len());
  57     sal_Char* pCharBuffer = new sal_Char[nSize * sizeof(sal_Unicode)];
  58
  59     for (xub_StrLen i = 0; i < nSize; ++i)
  60     {
  61         sal_Unicode ch(sPass.GetChar(i));
  62         pCharBuffer[2 * i] = static_cast< sal_Char >(ch & 0xFF);
  63         pCharBuffer[2 * i + 1] = static_cast< sal_Char >(ch >> 8);
  64     }
  65
  66     GetHashPassword(rPassHash, pCharBuffer, nSize * sizeof(sal_Unicode));
  67
  68     delete[] pCharBuffer;
  69 }
  70
  71 void SvPasswordHelper::GetHashPasswordBigEndian(uno::Sequence<sal_Int8>& rPassHash, const String& sPass)
  72 {
  73     xub_StrLen nSize(sPass.Len());
  74     sal_Char* pCharBuffer = new sal_Char[nSize * sizeof(sal_Unicode)];
  75
  76     for (xub_StrLen i = 0; i < nSize; ++i)
  77     {
  78         sal_Unicode ch(sPass.GetChar(i));
  79         pCharBuffer[2 * i] = static_cast< sal_Char >(ch >> 8);
  80         pCharBuffer[2 * i + 1] = static_cast< sal_Char >(ch & 0xFF);
  81     }
  82
  83     GetHashPassword(rPassHash, pCharBuffer, nSize * sizeof(sal_Unicode));
  84
  85     delete[] pCharBuffer;
  86 }
  87
  88 void SvPasswordHelper::GetHashPassword(uno::Sequence<sal_Int8>& rPassHash, const String& sPass)
  89 {
  90     GetHashPasswordLittleEndian(rPassHash, sPass);
  91 }
  92
  93 bool SvPasswordHelper::CompareHashPassword(const uno::Sequence<sal_Int8>& rOldPassHash, const String& sNewPass)
  94 {
  95     bool bResult = false;
  96
  97     uno::Sequence<sal_Int8> aNewPass(RTL_DIGEST_LENGTH_SHA1);
  98     GetHashPasswordLittleEndian(aNewPass, sNewPass);
  99     if (aNewPass == rOldPassHash)
 100         bResult = true;
 101     else
 102     {
 103         GetHashPasswordBigEndian(aNewPass, sNewPass);
 104         bResult = (aNewPass == rOldPassHash);
 105     }
 106
 107     return bResult;
 108 }
 109