private byte[] ComputeHash(EstEIDReader estEidReader, byte[] data)
{
uint rc, digest_length = 0;
const uint hash_length = Digest.SHA1_LENGTH;
Digest hash = new Digest(estEidReader);
rc = hash.InitDigest(Digest.HashAlgorithm.SHA1);
if (rc != EstEIDReader.ESTEID_OK)
{
throw new Exception(Resources.CARD_HASH_INIT);
}
rc = hash.UpdateDigest(data, (uint)data.Length);
if (rc != EstEIDReader.ESTEID_OK)
{
throw new Exception(Resources.CARD_HASH_UPDATE);
}
HGlobalSafeHandle raw = new HGlobalSafeHandle((int)hash_length);
IntPtr hashBytes = raw;
if (hashBytes == IntPtr.Zero)
{
throw new OutOfMemoryException(Resources.OUT_OF_MEMORY);
}
rc = hash.FinalizeDigest(ref hashBytes, ref digest_length);
if (rc != EstEIDReader.ESTEID_OK)
{
throw new Exception(Resources.CARD_HASH_FINALIZE);
}
return(raw.ToByteArray());
}
private byte[] ComputeHash(EstEIDReader estEidReader, PdfSignatureAppearance sap)
{
Digest hash = new Digest(estEidReader);
const uint hash_length = Digest.SHA1_LENGTH;
uint digest_length = 0;
uint rc;
rc = hash.InitDigest(Digest.HashAlgorithm.SHA1);
if (rc != EstEIDReader.ESTEID_OK)
{
throw new Exception(Resources.CARD_HASH_INIT);
}
Stream s = sap.RangeStream;
MemoryStream ss = new MemoryStream();
int read = 0;
byte[] buff = new byte[8192];
while ((read = s.Read(buff, 0, 8192)) > 0)
{
ss.Write(buff, 0, read);
rc = hash.UpdateDigest(buff, (uint)read);
if (rc != EstEIDReader.ESTEID_OK)
{
throw new Exception(Resources.CARD_HASH_UPDATE);
}
}
HGlobalSafeHandle raw = new HGlobalSafeHandle((int)hash_length);
IntPtr hashBytes = raw;
if (hashBytes == IntPtr.Zero)
{
throw new OutOfMemoryException(Resources.OUT_OF_MEMORY);
}
rc = hash.FinalizeDigest(ref hashBytes, ref digest_length);
if (rc != EstEIDReader.ESTEID_OK)
{
throw new Exception(Resources.CARD_HASH_FINALIZE);
}
return(raw.ToByteArray());
}