EXTERN_C
BOOL
PALAPI
CryptSignHashA(
HCRYPTHASH hHash,
DWORD dwKeySpec,
LPCSTR szDescription,
DWORD dwFlags,
BYTE *pbSignature,
DWORD *pdwSigLen)
{
_ASSERTE(szDescription == NULL);
return CryptSignHashW(hHash, dwKeySpec, NULL, dwFlags,
pbSignature, pdwSigLen);
}
QByteArray QCSP::sign( int method, const QByteArray &digest )
{
ALG_ID alg = 0;
switch( method )
{
case NID_sha1: alg = CALG_SHA1; break;
case NID_sha256: alg = CALG_SHA_256; break;
case NID_sha384: alg = CALG_SHA_384; break;
case NID_sha512: alg = CALG_SHA_512; break;
case NID_sha224:
default: return QByteArray();
}
HCRYPTHASH hash = 0;
if( !CryptCreateHash( d->h, alg, 0, 0, &hash ) )
return QByteArray();
if( !CryptSetHashParam( hash, HP_HASHVAL, (BYTE*)digest.constData(), 0 ) )
{
CryptDestroyHash( hash );
return QByteArray();
}
DWORD size = 256;
QByteArray sig;
sig.resize( size );
if( !CryptSignHashW( hash, AT_SIGNATURE, 0, 0, (BYTE*)sig.data(), &size ) )
sig.clear();
CryptDestroyHash( hash );
QByteArray reverse;
for( QByteArray::const_iterator i = sig.constEnd(); i != sig.constBegin(); )
{
--i;
reverse += *i;
}
return reverse;
}
QByteArray QCSP::sign( int method, const QByteArray &digest )
{
ALG_ID alg = 0;
switch( method )
{
case NID_sha1: alg = CALG_SHA1; break;
case NID_sha256: alg = CALG_SHA_256; break;
case NID_sha384: alg = CALG_SHA_384; break;
case NID_sha512: alg = CALG_SHA_512; break;
case NID_sha224:
default: return QByteArray();
}
HCRYPTHASH hash = 0;
if( !CryptCreateHash( d->h, alg, 0, 0, &hash ) )
return QByteArray();
if( !CryptSetHashParam( hash, HP_HASHVAL, LPBYTE(digest.constData()), 0 ) )
{
CryptDestroyHash( hash );
return QByteArray();
}
DWORD size = 256;
QByteArray sig( size, 0 );
if( CryptSignHashW( hash, AT_SIGNATURE, 0, 0, LPBYTE(sig.data()), &size ) )
sig.resize( size );
else
sig.clear();
switch( GetLastError() )
{
case ERROR_CANCELLED: d->error = PinCanceled; break;
default: break;
}
CryptDestroyHash( hash );
return reverse( sig );
}
