else
{
// open file for reading only
verifyKeyFile = privAccessFile(sf,Attribute.CRYPTO_EXTERNAL_KEY_VERIFY_FILE,"r");
// then read the checksum length
int checksumLen = verifyKeyFile.readInt();
byte[] originalChecksum = new byte[checksumLen];
verifyKeyFile.readFully(originalChecksum);
verifyKeyFile.readFully(data);