int iterationCount = dIn.readInt();
//
// we only do an integrity check if the password is provided.
//
HMac hMac = new HMac(new SHA1Digest());
if (password != null && password.length != 0)
{
byte[] passKey = PBEParametersGenerator.PKCS12PasswordToBytes(password);
PBEParametersGenerator pbeGen = new PKCS12ParametersGenerator(new SHA1Digest());
pbeGen.init(passKey, salt, iterationCount);
CipherParameters macParams;
if (version != 2)
{
macParams = pbeGen.generateDerivedMacParameters(hMac.getMacSize());
}
else
{
macParams = pbeGen.generateDerivedMacParameters(hMac.getMacSize() * 8);
}
Arrays.fill(passKey, (byte)0);
hMac.init(macParams);
MacInputStream mIn = new MacInputStream(dIn, hMac);
loadStore(mIn);
// Finalise our mac calculation
byte[] mac = new byte[hMac.getMacSize()];
hMac.doFinal(mac, 0);
// TODO Should this actually be reading the remainder of the stream?
// Read the original mac from the stream
byte[] oldMac = new byte[hMac.getMacSize()];
dIn.readFully(oldMac);
if (!Arrays.constantTimeAreEqual(mac, oldMac))
{
table.clear();
throw new IOException("KeyStore integrity check failed.");
}
}
else
{
loadStore(dIn);
// TODO Should this actually be reading the remainder of the stream?
// Parse the original mac from the stream too
byte[] oldMac = new byte[hMac.getMacSize()];
dIn.readFully(oldMac);
}
}