private int implDoFinal(byte[] out, int outOfs, int outLen)
throws ShortBufferException, IllegalBlockSizeException, BadPaddingException {
int requiredOutLen = doFinalLength(0);
if (outLen < requiredOutLen) {
throw new ShortBufferException();
}
try {
ensureInitialized();
int k = 0;
if (encrypt) {
if (paddingObj != null) {
int actualPadLen = paddingObj.setPaddingBytes(padBuffer, requiredOutLen - bytesBuffered);
k =
token.p11.C_EncryptUpdate(
session.id(), 0, padBuffer, 0, actualPadLen, 0, out, outOfs, outLen);
}
k += token.p11.C_EncryptFinal(session.id(), 0, out, (outOfs + k), (outLen - k));
} else {
if (paddingObj != null) {
if (padBufferLen != 0) {
k =
token.p11.C_DecryptUpdate(
session.id(), 0, padBuffer, 0, padBufferLen, 0, padBuffer, 0, padBuffer.length);
}
k += token.p11.C_DecryptFinal(session.id(), 0, padBuffer, k, padBuffer.length - k);
int actualPadLen = paddingObj.unpad(padBuffer, k);
k -= actualPadLen;
System.arraycopy(padBuffer, 0, out, outOfs, k);
} else {
k = token.p11.C_DecryptFinal(session.id(), 0, out, outOfs, outLen);
}
}
return k;
} catch (PKCS11Exception e) {
handleException(e);
throw new ProviderException("doFinal() failed", e);
} finally {
reset();
}
}
private int implDoFinal(ByteBuffer outBuffer)
throws ShortBufferException, IllegalBlockSizeException, BadPaddingException {
int outLen = outBuffer.remaining();
int requiredOutLen = doFinalLength(0);
if (outLen < requiredOutLen) {
throw new ShortBufferException();
}
try {
ensureInitialized();
long outAddr = 0;
byte[] outArray = null;
int outOfs = 0;
if (outBuffer instanceof DirectBuffer) {
outAddr = ((DirectBuffer) outBuffer).address();
outOfs = outBuffer.position();
} else {
if (outBuffer.hasArray()) {
outArray = outBuffer.array();
outOfs = outBuffer.position() + outBuffer.arrayOffset();
} else {
outArray = new byte[outLen];
}
}
int k = 0;
if (encrypt) {
if (paddingObj != null) {
int actualPadLen = paddingObj.setPaddingBytes(padBuffer, requiredOutLen - bytesBuffered);
k =
token.p11.C_EncryptUpdate(
session.id(), 0, padBuffer, 0, actualPadLen, outAddr, outArray, outOfs, outLen);
}
k += token.p11.C_EncryptFinal(session.id(), outAddr, outArray, (outOfs + k), (outLen - k));
} else {
if (paddingObj != null) {
if (padBufferLen != 0) {
k =
token.p11.C_DecryptUpdate(
session.id(), 0, padBuffer, 0, padBufferLen, 0, padBuffer, 0, padBuffer.length);
padBufferLen = 0;
}
k += token.p11.C_DecryptFinal(session.id(), 0, padBuffer, k, padBuffer.length - k);
int actualPadLen = paddingObj.unpad(padBuffer, k);
k -= actualPadLen;
outArray = padBuffer;
outOfs = 0;
} else {
k = token.p11.C_DecryptFinal(session.id(), outAddr, outArray, outOfs, outLen);
}
}
if ((!encrypt && paddingObj != null)
|| (!(outBuffer instanceof DirectBuffer) && !outBuffer.hasArray())) {
outBuffer.put(outArray, outOfs, k);
} else {
outBuffer.position(outBuffer.position() + k);
}
return k;
} catch (PKCS11Exception e) {
handleException(e);
throw new ProviderException("doFinal() failed", e);
} finally {
reset();
}
}