void set(BigInteger yVal, BigInteger pVal, BigInteger qVal, BigInteger gVal)
throws KeyczarException {
// Initialize the JSON fields
y = Base64Coder.encodeWebSafe(yVal.toByteArray());
p = Base64Coder.encodeWebSafe(pVal.toByteArray());
q = Base64Coder.encodeWebSafe(qVal.toByteArray());
g = Base64Coder.encodeWebSafe(gVal.toByteArray());
init();
}
private final void testSessionDecrypt(String subDir) throws Exception {
RandomAccessFile activeInput =
new RandomAccessFile(testData(subDir) + "/2.session.material", "r");
String sessionMaterial = activeInput.readLine();
activeInput.close();
SessionCrypter crypter =
new SessionCrypter(
new Crypter(testData(subDir)), Base64Coder.decodeWebSafe(sessionMaterial));
RandomAccessFile primaryInput =
new RandomAccessFile(testData(subDir) + "/2.session.ciphertext", "r");
String activeCiphertext = primaryInput.readLine();
primaryInput.close();
byte[] activeDecrypted = crypter.decrypt(Base64Coder.decodeWebSafe(activeCiphertext));
assertEquals(input, new String(activeDecrypted, Keyczar.DEFAULT_ENCODING));
}
private final void testVerifyAttached(String subDir, String hidden) throws Exception {
Verifier verifier = new Verifier(testData(subDir));
String hiddenExt = "";
if (hidden != "") hiddenExt = "." + hidden;
RandomAccessFile activeInput =
new RandomAccessFile(testData(subDir) + "/2" + hiddenExt + ".attached", "r");
String activeSignature = activeInput.readLine();
activeInput.close();
assertTrue(
verifier.attachedVerify(
Base64Coder.decodeWebSafe(activeSignature), hidden.getBytes(Keyczar.DEFAULT_ENCODING)));
}
void init() throws KeyczarException {
BigInteger yVal = new BigInteger(Base64Coder.decodeWebSafe(y));
BigInteger pVal = new BigInteger(Base64Coder.decodeWebSafe(p));
BigInteger qVal = new BigInteger(Base64Coder.decodeWebSafe(q));
BigInteger gVal = new BigInteger(Base64Coder.decodeWebSafe(g));
DSAPublicKeySpec spec = new DSAPublicKeySpec(yVal, pVal, qVal, gVal);
try {
KeyFactory kf = KeyFactory.getInstance(KEY_GEN_ALGORITHM);
jcePublicKey = kf.generatePublic(spec);
} catch (GeneralSecurityException e) {
throw new KeyczarException(e);
}
byte[] fullHash =
Util.prefixHash(
Util.stripLeadingZeros(pVal.toByteArray()),
Util.stripLeadingZeros(qVal.toByteArray()),
Util.stripLeadingZeros(gVal.toByteArray()),
Util.stripLeadingZeros(yVal.toByteArray()));
System.arraycopy(fullHash, 0, hash, 0, hash.length);
}
