private byte[] doFinal() throws BadPaddingException, IllegalBlockSizeException {
byte[] t = new byte[2048];
int n = implDoFinal(t, 0, t.length);
byte[] out = new byte[n];
System.arraycopy(t, 0, out, 0, n);
return out;
}
// see JCE spec
protected byte[] engineDoFinal(byte[] in, int inOfs, int inLen)
throws IllegalBlockSizeException, BadPaddingException {
implUpdate(in, inOfs, inLen);
int n = implDoFinal(buffer, 0, buffer.length);
byte[] out = new byte[n];
System.arraycopy(buffer, 0, out, 0, n);
return out;
}
private int implDoFinal(byte[] out, int outOfs, int outLen)
throws BadPaddingException, IllegalBlockSizeException {
if (bufOfs > maxInputSize) {
throw new IllegalBlockSizeException(
"Data must not be longer " + "than " + maxInputSize + " bytes");
}
try {
ensureInitialized();
PKCS11 p11 = token.p11;
int n;
switch (mode) {
case MODE_ENCRYPT:
n = p11.C_Encrypt(session.id(), buffer, 0, bufOfs, out, outOfs, outLen);
break;
case MODE_DECRYPT:
n = p11.C_Decrypt(session.id(), buffer, 0, bufOfs, out, outOfs, outLen);
break;
case MODE_SIGN:
byte[] tmpBuffer = new byte[bufOfs];
System.arraycopy(buffer, 0, tmpBuffer, 0, bufOfs);
tmpBuffer = p11.C_Sign(session.id(), tmpBuffer);
if (tmpBuffer.length > outLen) {
throw new BadPaddingException("Output buffer too small");
}
System.arraycopy(tmpBuffer, 0, out, outOfs, tmpBuffer.length);
n = tmpBuffer.length;
break;
case MODE_VERIFY:
n = p11.C_VerifyRecover(session.id(), buffer, 0, bufOfs, out, outOfs, outLen);
break;
default:
throw new ProviderException("internal error");
}
return n;
} catch (PKCS11Exception e) {
throw (BadPaddingException) new BadPaddingException("doFinal() failed").initCause(e);
} finally {
initialized = false;
session = token.releaseSession(session);
}
}
private void implUpdate(byte[] in, int inOfs, int inLen) {
try {
ensureInitialized();
} catch (PKCS11Exception e) {
throw new ProviderException("update() failed", e);
}
if ((inLen == 0) || (in == null)) {
return;
}
if (bufOfs + inLen > maxInputSize) {
bufOfs = maxInputSize + 1;
return;
}
System.arraycopy(in, inOfs, buffer, bufOfs, inLen);
bufOfs += inLen;
}