@Test
public void testGenerateRSA() {
/*
* Init Provider
*/
ProviderManagement providerManagement = new ProviderManagement();
providerManagement.initProvider("BC");
/*
* Generate Key RSA 1024-bit
* return KeyPair
*/
int lengthKeyRSA = 1024;
String cryptoProvider = "BC";
KeyManagementRSA keyManagementRSA = new KeyManagementRSA();
KeyPair keyPair = keyManagementRSA.generateRSA(lengthKeyRSA, cryptoProvider);
/*
* Get Modulus & Exponent Public Key
*/
RSAPublicKey rsaPubKey = (RSAPublicKey) keyPair.getPublic();
/*
* Test Result
*/
assertEquals(lengthKeyRSA, rsaPubKey.getModulus().bitLength());
}
private Map<String, Object> createRSAJWK(RSAPublicKey key, KeyUse use, String alg)
throws ServerException {
String alias = null;
try {
alias = getStringSetting(realm, OAuth2Constants.OAuth2ProviderService.KEYSTORE_ALIAS);
} catch (SSOException | SMSException e) {
logger.error(e.getMessage());
throw new ServerException(e);
}
if (StringUtils.isBlank(alias)) {
logger.error("Alias of ID Token Signing Key not set.");
throw new ServerException("Alias of ID Token Signing Key not set.");
} else if ("test".equals(alias)) {
logger.warning("Alias of ID Token Signing Key should be changed from default, 'test'.");
}
String kid =
Hash.hash(alias + key.getModulus().toString() + key.getPublicExponent().toString());
return json(object(
field("kty", "RSA"),
field(OAuth2Constants.JWTTokenParams.KEY_ID, kid),
field("use", use.toString()),
field("alg", alg),
field("n", Base64url.encode(key.getModulus().toByteArray())),
field("e", Base64url.encode(key.getPublicExponent().toByteArray()))))
.asMap();
}
/**
* Creates a {@code KeyValueType} that wraps the specified public key. This method supports DSA
* and RSA keys.
*
* @param key the {@code PublicKey} that will be represented as a {@code KeyValueType}.
* @return the constructed {@code KeyValueType} or {@code null} if the specified key is neither a
* DSA nor a RSA key.
*/
public static KeyValueType createKeyValue(PublicKey key) {
if (key instanceof RSAPublicKey) {
RSAPublicKey pubKey = (RSAPublicKey) key;
byte[] modulus = pubKey.getModulus().toByteArray();
byte[] exponent = pubKey.getPublicExponent().toByteArray();
RSAKeyValueType rsaKeyValue = new RSAKeyValueType();
rsaKeyValue.setModulus(Base64.encodeBytes(modulus).getBytes());
rsaKeyValue.setExponent(Base64.encodeBytes(exponent).getBytes());
return rsaKeyValue;
} else if (key instanceof DSAPublicKey) {
DSAPublicKey pubKey = (DSAPublicKey) key;
byte[] P = pubKey.getParams().getP().toByteArray();
byte[] Q = pubKey.getParams().getQ().toByteArray();
byte[] G = pubKey.getParams().getG().toByteArray();
byte[] Y = pubKey.getY().toByteArray();
DSAKeyValueType dsaKeyValue = new DSAKeyValueType();
dsaKeyValue.setP(Base64.encodeBytes(P).getBytes());
dsaKeyValue.setQ(Base64.encodeBytes(Q).getBytes());
dsaKeyValue.setG(Base64.encodeBytes(G).getBytes());
dsaKeyValue.setY(Base64.encodeBytes(Y).getBytes());
return dsaKeyValue;
}
throw logger.unsupportedType(key.toString());
}
private String getString(PublicKey key) throws FailedLoginException {
try {
if (key instanceof DSAPublicKey) {
DSAPublicKey dsa = (DSAPublicKey) key;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
write(dos, "ssh-dss");
write(dos, dsa.getParams().getP());
write(dos, dsa.getParams().getQ());
write(dos, dsa.getParams().getG());
write(dos, dsa.getY());
dos.close();
return base64Encode(baos.toByteArray());
} else if (key instanceof RSAKey) {
RSAPublicKey rsa = (RSAPublicKey) key;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
write(dos, "ssh-rsa");
write(dos, rsa.getPublicExponent());
write(dos, rsa.getModulus());
dos.close();
return base64Encode(baos.toByteArray());
} else {
throw new FailedLoginException("Unsupported key type " + key.getClass().toString());
}
} catch (IOException e) {
throw new FailedLoginException("Unable to check public key");
}
}
/** 生成密钥对 */
public static Map<String, String> generateKeyPair() throws Exception {
/** RSA算法要求有一个可信任的随机数源 */
SecureRandom sr = new SecureRandom();
/** 为RSA算法创建一个KeyPairGenerator对象 */
KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
/** 利用上面的随机数据源初始化这个KeyPairGenerator对象 */
kpg.initialize(KEYSIZE, sr);
/** 生成密匙对 */
KeyPair kp = kpg.generateKeyPair();
/** 得到公钥 */
Key publicKey = kp.getPublic();
byte[] publicKeyBytes = publicKey.getEncoded();
String pub =
new String(Base64.encodeBase64(publicKeyBytes), ConfigureEncryptAndDecrypt.CHAR_ENCODING);
/** 得到私钥 */
Key privateKey = kp.getPrivate();
byte[] privateKeyBytes = privateKey.getEncoded();
String pri =
new String(Base64.encodeBase64(privateKeyBytes), ConfigureEncryptAndDecrypt.CHAR_ENCODING);
Map<String, String> map = new HashMap<String, String>();
map.put("publicKey", pub);
map.put("privateKey", pri);
RSAPublicKey rsp = (RSAPublicKey) kp.getPublic();
BigInteger bint = rsp.getModulus();
byte[] b = bint.toByteArray();
byte[] deBase64Value = Base64.encodeBase64(b);
String retValue = new String(deBase64Value);
map.put("modulus", retValue);
return map;
}
@Override
public boolean equals(Object o) {
if (o == this) {
return true;
}
if (o instanceof OpenSSLRSAPublicKey) {
OpenSSLRSAPublicKey other = (OpenSSLRSAPublicKey) o;
/*
* We can shortcut the true case, but it still may be equivalent but
* different copies.
*/
if (key.equals(other.getOpenSSLKey())) {
return true;
}
}
if (!(o instanceof RSAPublicKey)) {
return false;
}
ensureReadParams();
RSAPublicKey other = (RSAPublicKey) o;
return modulus.equals(other.getModulus()) && publicExponent.equals(other.getPublicExponent());
}
/**
* Certificate_Verify(証明書)を受け取ったときの動作をします。
*
* @param line クライアントから受信した文字列
* @return クライアントの証明書の真偽
* @author kinbara
*/
private boolean recieveCertificateVerify(String line) {
boolean cert_verify = false;
// サーバー側のダイジェストのハッシュ値
ListIterator listIte = netDigest.listIterator();
String digest = "";
while (listIte.hasNext()) {
digest += listIte.next().toString();
}
digest = digest.substring(0, digest.indexOf("Certificate_Verify"));
BigInteger digest1 = new BigInteger(this.getHash(digest), 16);
// クライアントの公開鍵で復号
BigInteger digest2 = new BigInteger(line.substring(line.indexOf(":") + 1), 16);
try {
X509 x509 = new X509("src/sglserver/conf/key/ca", "CAKeyStore", this.storePasswd);
// TODO:(注意)ユーザーの公開鍵をpeerNameでCAKeyStoreに登録している場合のみ有効
RSAPublicKey pk = x509.getRSAPublicKey(peerName);
digest2 = digest2.modPow(pk.getPublicExponent(), pk.getModulus()); // 復号
// b = a.modPow(s, n); → a mod n のs乗がbに代入される
// pk.getPublicExponent()→公開指数
// pk.getModulus()→pkのmod値
} catch (Exception e) {
e.printStackTrace();
}
if (digest1.compareTo(digest2) == 0) {
System.out.println(socket.getRemoteSocketAddress() + "は、信頼できます。");
cert_verify = true;
} else {
System.out.println(socket.getRemoteSocketAddress() + "は、危険です。");
}
return (cert_verify);
}
/**
* 打印公钥信息
*
* @param publicKey
*/
public static void printPublicKeyInfo(PublicKey publicKey) {
RSAPublicKey rsaPublicKey = (RSAPublicKey) publicKey;
System.out.println("----------RSAPublicKey----------");
System.out.println("Modulus.length=" + rsaPublicKey.getModulus().bitLength());
System.out.println("Modulus=" + rsaPublicKey.getModulus().toString());
System.out.println("PublicExponent.length=" + rsaPublicKey.getPublicExponent().bitLength());
System.out.println("PublicExponent=" + rsaPublicKey.getPublicExponent().toString());
}
private static RsaPublicKey readRsaX509Certificate(PublicKey publicKey, Padding padding)
throws KeyczarException {
RSAPublicKey jceKey = (RSAPublicKey) publicKey;
RsaPublicKey key = new RsaPublicKey();
key.set(jceKey.getModulus().bitLength(), jceKey.getModulus(), jceKey.getPublicExponent());
key.setPadding(padding == null ? Padding.OAEP : padding);
return key;
}
public String getPublicKey() {
RSAPublicKey publicKey = cipherMgr.getPublicKey();
if (null != publicKey) {
return Base64Utils.encode(publicKey.getEncoded());
} else {
return null;
}
}
/**
* Convert a public key to the SSH format.
*
* <p>Note that only RSA keys are supported at the moment.
*
* @param key the public key to convert
* @return an array of bytes that can with the representation of the public key
*/
public static byte[] getKeyBytes(final PublicKey key) {
// We only support RSA at the moment:
if (!(key instanceof RSAPublicKey)) {
log.error(
"The key algorithm \"" + key.getAlgorithm() + "\" is not supported, will return null.");
return null;
}
// Extract the bytes of the exponent and the modulus
// of the key:
final RSAPublicKey rsaKey = (RSAPublicKey) key;
final byte[] exponentBytes = rsaKey.getPublicExponent().toByteArray();
final byte[] modulusBytes = rsaKey.getModulus().toByteArray();
if (log.isDebugEnabled()) {
log.debug(
"Exponent is "
+ rsaKey.getPublicExponent()
+ " ("
+ Hex.encodeHexString(exponentBytes)
+ ").");
log.debug(
"Modulus is " + rsaKey.getModulus() + " (" + Hex.encodeHexString(exponentBytes) + ").");
}
try {
// Prepare the stream to write the binary SSH key:
final ByteArrayOutputStream binaryOut = new ByteArrayOutputStream();
final DataOutputStream dataOut = new DataOutputStream(binaryOut);
// Write the SSH header (4 bytes for the length of the algorithm
// name and then the algorithm name):
dataOut.writeInt(SSH_RSA.length());
dataOut.writeBytes(SSH_RSA);
// Write the exponent and modulus bytes (note that it is not
// necessary to check if the most significative bit is one, as
// that will never happen with byte arrays created from big
// integers, unless they are negative, which is not the case
// for RSA modulus or exponents):
dataOut.writeInt(exponentBytes.length);
dataOut.write(exponentBytes);
dataOut.writeInt(modulusBytes.length);
dataOut.write(modulusBytes);
// Done, extract the bytes:
binaryOut.close();
final byte[] keyBytes = binaryOut.toByteArray();
if (log.isDebugEnabled()) {
log.debug("Key bytes are " + Hex.encodeHexString(keyBytes) + ".");
}
return keyBytes;
} catch (IOException exception) {
log.error("Error while serializing public key, will return null.", exception);
return null;
}
}
/** 根据公钥获取key */
private static byte[] getPKBytes(PublicKey pk) {
if (pk instanceof RSAPublicKey) {
RSAPublicKey k = (RSAPublicKey) pk;
return k.getModulus().toByteArray();
} else if (pk instanceof DSAPublicKey) {
DSAPublicKey k = (DSAPublicKey) pk;
return k.getY().toByteArray();
}
return null;
}
/**
* 这个方法用于生成密钥,如果已经有密钥了就不需要在调用方法生成了
*
* @return
* @throws Exception
*/
public static Map<String, String> initKey() throws Exception {
KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance(KEY_ALGORITHM);
keyPairGen.initialize(KEY_SIZE);
KeyPair keyPair = keyPairGen.generateKeyPair();
RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
Map<String, String> keyMap = new HashMap<String, String>();
keyMap.put(PRIVATE_KEY, Base64.encodeBase64String(privateKey.getEncoded()));
keyMap.put(PUBLIC_KEY, Base64.encodeBase64String(publicKey.getEncoded()));
return keyMap;
}
protected <T extends KeySpec> T engineGetKeySpec(Key key, Class<T> keySpec)
throws InvalidKeySpecException {
try {
// convert key to one of our keys
// this also verifies that the key is a valid RSA key and ensures
// that the encoding is X.509/PKCS#8 for public/private keys
key = engineTranslateKey(key);
} catch (InvalidKeyException e) {
throw new InvalidKeySpecException(e);
}
if (key instanceof RSAPublicKey) {
RSAPublicKey rsaKey = (RSAPublicKey) key;
if (rsaPublicKeySpecClass.isAssignableFrom(keySpec)) {
return keySpec.cast(new RSAPublicKeySpec(rsaKey.getModulus(), rsaKey.getPublicExponent()));
} else if (x509KeySpecClass.isAssignableFrom(keySpec)) {
return keySpec.cast(new X509EncodedKeySpec(key.getEncoded()));
} else {
throw new InvalidKeySpecException(
"KeySpec must be RSAPublicKeySpec or " + "X509EncodedKeySpec for RSA public keys");
}
} else if (key instanceof RSAPrivateKey) {
if (pkcs8KeySpecClass.isAssignableFrom(keySpec)) {
return keySpec.cast(new PKCS8EncodedKeySpec(key.getEncoded()));
} else if (rsaPrivateCrtKeySpecClass.isAssignableFrom(keySpec)) {
if (key instanceof RSAPrivateCrtKey) {
RSAPrivateCrtKey crtKey = (RSAPrivateCrtKey) key;
return keySpec.cast(
new RSAPrivateCrtKeySpec(
crtKey.getModulus(),
crtKey.getPublicExponent(),
crtKey.getPrivateExponent(),
crtKey.getPrimeP(),
crtKey.getPrimeQ(),
crtKey.getPrimeExponentP(),
crtKey.getPrimeExponentQ(),
crtKey.getCrtCoefficient()));
} else {
throw new InvalidKeySpecException("RSAPrivateCrtKeySpec can only be used with CRT keys");
}
} else if (rsaPrivateKeySpecClass.isAssignableFrom(keySpec)) {
RSAPrivateKey rsaKey = (RSAPrivateKey) key;
return keySpec.cast(
new RSAPrivateKeySpec(rsaKey.getModulus(), rsaKey.getPrivateExponent()));
} else {
throw new InvalidKeySpecException(
"KeySpec must be RSAPrivate(Crt)KeySpec or "
+ "PKCS8EncodedKeySpec for RSA private keys");
}
} else {
// should not occur, caught in engineTranslateKey()
throw new InvalidKeySpecException("Neither public nor private key");
}
}
private static void test(PrivateKey privateKey, PublicKey publicKey) throws Exception {
testSignature("MD2withRSA", privateKey, publicKey);
testSignature("MD5withRSA", privateKey, publicKey);
testSignature("SHA1withRSA", privateKey, publicKey);
testSignature("SHA224withRSA", privateKey, publicKey);
testSignature("SHA256withRSA", privateKey, publicKey);
RSAPublicKey rsaKey = (RSAPublicKey) publicKey;
if (rsaKey.getModulus().bitLength() > 512) {
// for SHA384 and SHA512 the data is too long for 512 bit keys
testSignature("SHA384withRSA", privateKey, publicKey);
testSignature("SHA512withRSA", privateKey, publicKey);
}
}
protected int engineGetKeySize(Key key) {
if (key instanceof RSAPrivateKey) {
RSAPrivateKey k = (RSAPrivateKey) key;
return k.getModulus().bitLength();
} else if (key instanceof RSAPublicKey) {
RSAPublicKey k = (RSAPublicKey) key;
return k.getModulus().bitLength();
}
throw new IllegalArgumentException("not an RSA key!");
}
protected void assertsRsaKey(RSAPublicKey pubKey) {
Assert.assertEquals(new BigInteger("65537"), pubKey.getPublicExponent());
final String modulus =
"22840028388110743583131987675136887114153126223124011317437832666"
+ "25854781992306722377061897219550740787245366580892823047038154958086308817575397"
+ "86207323511183698710582016112357060923053840856777454937186677760616034425665662"
+ "82261472797239839649294119764258671908502475664743909024714305171394796349355615"
+ "01410512875834037603865586850446929492793894140130256172372280205701912961974382"
+ "44718040286649900869581969011709834002741504113088991590355018061303753262915348"
+ "56911333402703872012358714368938812147820774134682975669390306870781321673316754"
+ "378035200080485404740444851779733064858474545694849794752210968120764651";
Assert.assertEquals(new BigInteger(modulus), pubKey.getModulus());
}
@Override
protected SignerWithRecovery getRSASigner() {
SignerWithRecovery signer = null;
try {
RSAEngine rsa = new RSAEngine();
RSAPublicKey pub = (RSAPublicKey) getPublicKey(aaFile);
RSAKeyParameters pubParameters =
new RSAKeyParameters(false, pub.getModulus(), pub.getPublicExponent());
signer = new ISO9796d2Signer(rsa, new SHA256Digest(), false);
signer.init(false, pubParameters);
} catch (Exception e) {
e.printStackTrace();
}
return signer;
}
static OpenSSLKey getInstance(RSAPublicKey rsaPublicKey) throws InvalidKeyException {
try {
return new OpenSSLKey(
NativeCrypto.EVP_PKEY_new_RSA(
rsaPublicKey.getModulus().toByteArray(),
rsaPublicKey.getPublicExponent().toByteArray(),
null,
null,
null,
null,
null,
null));
} catch (Exception e) {
throw new InvalidKeyException(e);
}
}
static byte[] buildRSA(RSAPublicKey key) {
DataByteOutputStream out = new DataByteOutputStream();
BigInteger exponent = key.getPublicExponent();
BigInteger modulus = key.getModulus();
int exponentLength = BigIntegerLength(exponent);
if (exponentLength < 256) out.writeByte(exponentLength);
else {
out.writeByte(0);
out.writeShort(exponentLength);
}
out.writeBigInteger(exponent);
out.writeBigInteger(modulus);
return out.toByteArray();
}
@Test
public void test() {
ServerCACR serverCACR = new ServerCACR();
CA_CR_keys cacr_keys = new CA_CR_keys();
Random rand = new Random();
BigInteger cegado_cliente = new BigInteger(4, rand);
System.out.println("antes de encriptar con privKey de la CA ------> " + cegado_cliente);
BigInteger certificado = serverCACR.certificate(cegado_cliente);
System.out.println("certificado----------------------------------->" + certificado);
RSAPublicKey pubKey = CA_CR_keys.getPubKey();
BigInteger e = pubKey.getPublicExponent();
BigInteger n = pubKey.getModulus();
System.out.println(
"despues de desencriptar con la pública ------->" + certificado.modPow(e, n));
}
@Test
public void testTrustStore()
throws KeyStoreException, CertificateException, NoSuchAlgorithmException, IOException {
File caPem = getTempFile("ca/cert.pem");
KeyStore keystore = createKeyStore();
KeyStoreUtil.updateWithCaPem(keystore, caPem);
Enumeration<String> aliases = keystore.aliases();
String alias = aliases.nextElement();
assertFalse(aliases.hasMoreElements());
assertTrue(alias.contains("ca.test.jolokia.org"));
X509Certificate cert = (X509Certificate) keystore.getCertificate(alias);
cert.checkValidity();
assertTrue(cert.getSubjectDN().getName().contains(CA_CERT_SUBJECT_DN_CN));
RSAPublicKey key = (RSAPublicKey) cert.getPublicKey();
assertEquals(key.getAlgorithm(), "RSA");
}
/**
* 生成密钥对�?�注意这里是生成密钥对KeyPair，再由密钥对获取公私�?
*
* @return
*/
public static Map<String, byte[]> generateKeyBytes() {
try {
KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(KEY_ALGORITHM);
keyPairGenerator.initialize(KEY_SIZE);
KeyPair keyPair = keyPairGenerator.generateKeyPair();
RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
Map<String, byte[]> keyMap = new HashMap<String, byte[]>();
keyMap.put(PUBLIC_KEY, publicKey.getEncoded());
keyMap.put(PRIVATE_KEY, privateKey.getEncoded());
return keyMap;
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
// internal implementation of translateKey() for public keys. See JCA doc
private PublicKey translatePublicKey(PublicKey key) throws InvalidKeyException {
if (key instanceof RSAPublicKey) {
if (key instanceof RSAPublicKeyImpl) {
return key;
}
RSAPublicKey rsaKey = (RSAPublicKey) key;
try {
return new RSAPublicKeyImpl(rsaKey.getModulus(), rsaKey.getPublicExponent());
} catch (RuntimeException e) {
// catch providers that incorrectly implement RSAPublicKey
throw new InvalidKeyException("Invalid key", e);
}
} else if ("X.509".equals(key.getFormat())) {
byte[] encoded = key.getEncoded();
return new RSAPublicKeyImpl(encoded);
} else {
throw new InvalidKeyException(
"Public keys must be instance " + "of RSAPublicKey or have X.509 encoding");
}
}
/**
* @param kpair test key pair
* @param pubExponent expected public exponent.
* @return true if test passed. false if test failed.
*/
private static boolean specTest(KeyPair kpair, BigInteger pubExponent) {
boolean passed = true;
RSAPrivateKey priv = (RSAPrivateKey) kpair.getPrivate();
RSAPublicKey pub = (RSAPublicKey) kpair.getPublic();
// test the getModulus method
if ((priv instanceof RSAKey) && (pub instanceof RSAKey)) {
if (!priv.getModulus().equals(pub.getModulus())) {
System.err.println("priv.getModulus() = " + priv.getModulus());
System.err.println("pub.getModulus() = " + pub.getModulus());
passed = false;
}
if (!pubExponent.equals(pub.getPublicExponent())) {
System.err.println("pubExponent = " + pubExponent);
System.err.println("pub.getPublicExponent() = " + pub.getPublicExponent());
passed = false;
}
}
return passed;
}
protected byte[] getHash(RSAPublicKey publicKey) throws EbicsException {
String modulus;
String exponent;
String hash;
byte[] digest;
exponent = Hex.encodeHexString(publicKey.getPublicExponent().toByteArray());
modulus = Hex.encodeHexString(removeFirstByte(publicKey.getModulus().toByteArray()));
hash = exponent + " " + modulus;
if (hash.charAt(0) == '0') {
hash = hash.substring(1);
}
try {
digest = MessageDigest.getInstance("SHA-256", "BC").digest(hash.getBytes("US-ASCII"));
} catch (GeneralSecurityException | UnsupportedEncodingException e) {
throw new EbicsException(e.getMessage());
}
return format(new String(Hex.encodeHex(digest, false))).getBytes();
}
public PublicKeyDataObject getPublicKeyDataObject(
ASN1ObjectIdentifier usage, PublicKey publicKey) {
if (publicKey instanceof java.security.interfaces.RSAPublicKey) {
java.security.interfaces.RSAPublicKey pubKey =
(java.security.interfaces.RSAPublicKey) publicKey;
return new RSAPublicKey(usage, pubKey.getModulus(), pubKey.getPublicExponent());
} else {
ECPublicKey pubKey = (ECPublicKey) publicKey;
java.security.spec.ECParameterSpec params = pubKey.getParams();
return new ECDSAPublicKey(
usage,
((ECFieldFp) params.getCurve().getField()).getP(),
params.getCurve().getA(),
params.getCurve().getB(),
convertPoint(convertCurve(params.getCurve()), params.getGenerator()).getEncoded(),
params.getOrder(),
convertPoint(convertCurve(params.getCurve()), pubKey.getW()).getEncoded(),
params.getCofactor());
}
}
private static String encryptByPublicKey(final String data, final RSAPublicKey publicKey)
throws Exception {
final Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
final int key_len = publicKey.getModulus().bitLength() / 8;
final String[] datas = splitString(data, key_len - 11);
String mi = "";
for (final String s : datas) {
final byte[] mib = cipher.doFinal(s.getBytes());
mi += bcd2Str(mib);
}
return new String(Base64.encodeBase64(ASCII_To_BCD(mi.getBytes(), mi.getBytes().length)));
}
protected KeySpec engineGetKeySpec(Key key, Class spec) throws InvalidKeySpecException {
if (spec.isAssignableFrom(PKCS8EncodedKeySpec.class) && key.getFormat().equals("PKCS#8")) {
return new PKCS8EncodedKeySpec(key.getEncoded());
} else if (spec.isAssignableFrom(X509EncodedKeySpec.class) && key.getFormat().equals("X.509")) {
return new X509EncodedKeySpec(key.getEncoded());
} else if (spec.isAssignableFrom(RSAPublicKeySpec.class) && key instanceof RSAPublicKey) {
RSAPublicKey k = (RSAPublicKey) key;
return new RSAPublicKeySpec(k.getModulus(), k.getPublicExponent());
} else if (spec.isAssignableFrom(RSAPrivateKeySpec.class) && key instanceof RSAPrivateKey) {
RSAPrivateKey k = (RSAPrivateKey) key;
return new RSAPrivateKeySpec(k.getModulus(), k.getPrivateExponent());
} else if (spec.isAssignableFrom(RSAPrivateCrtKeySpec.class)
&& key instanceof RSAPrivateCrtKey) {
RSAPrivateCrtKey k = (RSAPrivateCrtKey) key;
return new RSAPrivateCrtKeySpec(
k.getModulus(),
k.getPublicExponent(),
k.getPrivateExponent(),
k.getPrimeP(),
k.getPrimeQ(),
k.getPrimeExponentP(),
k.getPrimeExponentQ(),
k.getCrtCoefficient());
} else if (spec.isAssignableFrom(DHPrivateKeySpec.class) && key instanceof DHPrivateKey) {
DHPrivateKey k = (DHPrivateKey) key;
return new DHPrivateKeySpec(k.getX(), k.getParams().getP(), k.getParams().getG());
} else if (spec.isAssignableFrom(DHPublicKeySpec.class) && key instanceof DHPublicKey) {
DHPublicKey k = (DHPublicKey) key;
return new DHPublicKeySpec(k.getY(), k.getParams().getP(), k.getParams().getG());
}
throw new RuntimeException("not implemented yet " + key + " " + spec);
}
/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
File file = new File("c:/test.html");
FileInputStream in = new FileInputStream(file);
ByteArrayOutputStream bout = new ByteArrayOutputStream();
byte[] tmpbuf = new byte[1024];
int count = 0;
while ((count = in.read(tmpbuf)) != -1) {
bout.write(tmpbuf, 0, count);
tmpbuf = new byte[1024];
}
in.close();
byte[] orgData = bout.toByteArray();
KeyPair keyPair = RSAUtil.generateKeyPair();
RSAPublicKey pubKey = (RSAPublicKey) keyPair.getPublic();
RSAPrivateKey priKey = (RSAPrivateKey) keyPair.getPrivate();
byte[] pubModBytes = pubKey.getModulus().toByteArray();
byte[] pubPubExpBytes = pubKey.getPublicExponent().toByteArray();
// byte[] priModBytes = priKey.getModulus().toByteArray();
// byte[] priPriExpBytes = priKey.getPrivateExponent().toByteArray();
RSAPublicKey recoveryPubKey = RSAUtil.generateRSAPublicKey(pubModBytes, pubPubExpBytes);
// RSAPrivateKey recoveryPriKey =
// RSAUtil.generateRSAPrivateKey(priModBytes, priPriExpBytes);
byte[] raw = RSAUtil.encrypt(priKey, orgData);
file = new File("c:/encrypt_result.dat");
OutputStream out = new FileOutputStream(file);
out.write(raw);
out.close();
byte[] data = RSAUtil.decrypt(recoveryPubKey, raw);
file = new File("c:/decrypt_result.html");
out = new FileOutputStream(file);
out.write(data);
out.flush();
out.close();
}