protected int engineDoFinal(
byte[] input, int inputOffset, int inputLen, byte[] output, int outputOffset)
throws IllegalBlockSizeException, BadPaddingException {
if (input != null) {
bOut.write(input, inputOffset, inputLen);
}
if (cipher instanceof RSABlindedEngine) {
if (bOut.size() > cipher.getInputBlockSize() + 1) {
throw new ArrayIndexOutOfBoundsException("too much data for RSA block");
}
} else {
if (bOut.size() > cipher.getInputBlockSize()) {
throw new ArrayIndexOutOfBoundsException("too much data for RSA block");
}
}
byte[] out;
try {
byte[] bytes = bOut.toByteArray();
out = cipher.processBlock(bytes, 0, bytes.length);
} catch (InvalidCipherTextException e) {
throw new BadPaddingException(e.getMessage());
} finally {
bOut.reset();
}
for (int i = 0; i != out.length; i++) {
output[outputOffset + i] = out[i];
}
return out.length;
}
protected byte[] engineUpdate(byte[] input, int inputOffset, int inputLen) {
bOut.write(input, inputOffset, inputLen);
if (cipher instanceof RSABlindedEngine) {
if (bOut.size() > cipher.getInputBlockSize() + 1) {
throw new ArrayIndexOutOfBoundsException("too much data for RSA block");
}
} else {
if (bOut.size() > cipher.getInputBlockSize()) {
throw new ArrayIndexOutOfBoundsException("too much data for RSA block");
}
}
return null;
}
protected int engineGetBlockSize() {
try {
return cipher.getInputBlockSize();
} catch (NullPointerException e) {
throw new IllegalStateException("RSA Cipher not initialised");
}
}