private void testCipherNameWithWrap(String name, String simpleName) throws Exception {
KeyGenerator kg = KeyGenerator.getInstance("AES");
kg.init(new SecureRandom());
SecretKey key = kg.generateKey();
byte[] salt = {
(byte) 0xc7, (byte) 0x73, (byte) 0x21, (byte) 0x8c,
(byte) 0x7e, (byte) 0xc8, (byte) 0xee, (byte) 0x99
};
char[] password = {'p', 'a', 's', 's', 'w', 'o', 'r', 'd'};
PBEParameterSpec pbeParamSpec = new PBEParameterSpec(salt, 20);
PBEKeySpec pbeKeySpec = new PBEKeySpec(password);
SecretKeyFactory keyFac = SecretKeyFactory.getInstance(name);
SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);
Cipher pbeEncryptCipher = Cipher.getInstance(name, "SC");
pbeEncryptCipher.init(Cipher.WRAP_MODE, pbeKey, pbeParamSpec);
byte[] symKeyBytes = pbeEncryptCipher.wrap(key);
Cipher simpleCipher = Cipher.getInstance(simpleName, "SC");
simpleCipher.init(Cipher.UNWRAP_MODE, pbeKey, pbeParamSpec);
SecretKey unwrappedKey = (SecretKey) simpleCipher.unwrap(symKeyBytes, "AES", Cipher.SECRET_KEY);
if (!Arrays.areEqual(unwrappedKey.getEncoded(), key.getEncoded())) {
fail("key mismatch on unwrapping");
}
}
/**
* 使用指定的公钥初始化加密器，并对密钥进行加密。
*
* @param cipher 加密器。
* @param publicKey 公钥。
* @param key 加密密钥。
* @return 加密后的数据。
*/
public static byte[] wrap(Cipher cipher, PublicKey publicKey, Key key) {
try {
cipher.init(Cipher.WRAP_MODE, publicKey);
return cipher.wrap(key);
} catch (Exception e) {
throw new CryptoException(e.getMessage(), e);
}
}
public ASN1Sequence generateRecipientEncryptedKeys(
AlgorithmIdentifier keyAgreeAlgorithm,
AlgorithmIdentifier keyEncryptionAlgorithm,
GenericKey contentEncryptionKey)
throws CMSException {
init(keyAgreeAlgorithm.getAlgorithm());
PrivateKey senderPrivateKey = this.senderPrivateKey;
ASN1ObjectIdentifier keyAgreementOID = keyAgreeAlgorithm.getAlgorithm();
if (keyAgreementOID.getId().equals(CMSEnvelopedGenerator.ECMQV_SHA1KDF)) {
senderPrivateKey =
new MQVPrivateKeySpec(
senderPrivateKey, ephemeralKP.getPrivate(), ephemeralKP.getPublic());
}
ASN1EncodableVector recipientEncryptedKeys = new ASN1EncodableVector();
for (int i = 0; i != recipientIDs.size(); i++) {
PublicKey recipientPublicKey = (PublicKey) recipientKeys.get(i);
KeyAgreeRecipientIdentifier karId = (KeyAgreeRecipientIdentifier) recipientIDs.get(i);
if (keyAgreementOID.getId().equals(CMSEnvelopedGenerator.ECMQV_SHA1KDF)) {
recipientPublicKey = new MQVPublicKeySpec(recipientPublicKey, recipientPublicKey);
}
try {
// Use key agreement to choose a wrap key for this recipient
KeyAgreement keyAgreement = helper.createKeyAgreement(keyAgreementOID);
keyAgreement.init(senderPrivateKey, random);
keyAgreement.doPhase(recipientPublicKey, true);
SecretKey keyEncryptionKey =
keyAgreement.generateSecret(keyEncryptionAlgorithm.getAlgorithm().getId());
// Wrap the content encryption key with the agreement key
Cipher keyEncryptionCipher = helper.createCipher(keyEncryptionAlgorithm.getAlgorithm());
keyEncryptionCipher.init(Cipher.WRAP_MODE, keyEncryptionKey, random);
byte[] encryptedKeyBytes = keyEncryptionCipher.wrap(helper.getJceKey(contentEncryptionKey));
ASN1OctetString encryptedKey = new DEROctetString(encryptedKeyBytes);
recipientEncryptedKeys.add(new RecipientEncryptedKey(karId, encryptedKey));
} catch (GeneralSecurityException e) {
throw new CMSException("cannot perform agreement step: " + e.getMessage(), e);
}
}
return new DERSequence(recipientEncryptedKeys);
}
public byte[] generateWrappedKey(GenericKey encryptionKey) throws OperatorException {
Key contentEncryptionKeySpec = OperatorUtils.getJceKey(encryptionKey);
Cipher keyEncryptionCipher =
helper.createSymmetricWrapper(this.getAlgorithmIdentifier().getAlgorithm());
try {
keyEncryptionCipher.init(Cipher.WRAP_MODE, wrappingKey, random);
return keyEncryptionCipher.wrap(contentEncryptionKeySpec);
} catch (InvalidKeyException e) {
throw new OperatorException("cannot wrap key: " + e.getMessage(), e);
} catch (GeneralSecurityException e) {
throw new OperatorException("cannot wrap key: " + e.getMessage(), e);
}
}
/**
* Wraps a secretkey
*
* @param wrappedKey The wrapped session key
* @param wrappingTransformation The wrapping transformation associated with this operation
* @param wrappingKey The wrapping key
* @param wrappedKeyAlgorithm The wrapped key Algorithim
* @return The unwrapped session key
* @throws NoSuchPaddingException Thrown if an invalid padding form is specified
* @throws NoSuchAlgorithmException Thrown if an invalid algorithm is specified
* @throws InvalidKeyException Thrown id the wrapping key is invalid
*/
public static byte[] wrapKey(
Certificate wrappingCertificate, String wrappingTransformation, Key secretKey)
throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException,
IllegalStateException, IllegalBlockSizeException {
byte[] wrappedSecretKey;
Cipher c;
wrappedSecretKey = null;
c = null;
// Instantiate wrapping cipher
c = Cipher.getInstance(wrappingTransformation);
// Initialise wrapping cipher
c.init(Cipher.WRAP_MODE, wrappingCertificate);
// Wrap session key
wrappedSecretKey = c.wrap((SecretKey) secretKey);
return wrappedSecretKey;
}
/**
* Wrapping allows to mask/encapsulate/protect the key used Create another key, use a cipher with
* it and {@link Cipher#WRAP_MODE} and wrap the original key To unwrap, use a cipher with {@link
* Cipher#UNWRAP_MODE}
*/
static void wrapUnwrapKey() throws Exception {
// create a key to wrap
KeyGenerator generator = KeyGenerator.getInstance("AES");
generator.init(128);
Key keyToBeWrapped = generator.generateKey();
System.out.println("input : " + Utils.toHex(keyToBeWrapped.getEncoded()));
// create a wrapper and do the wrapping
Cipher cipher = Cipher.getInstance("AESWrap");
KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
keyGenerator.init(128);
Key wrapKey = keyGenerator.generateKey();
cipher.init(Cipher.WRAP_MODE, wrapKey);
byte[] wrappedKey = cipher.wrap(keyToBeWrapped);
System.out.println("wrapped : " + Utils.toHex(wrappedKey));
// unwrap the wrapped key
cipher.init(Cipher.UNWRAP_MODE, wrapKey);
Key key = cipher.unwrap(wrappedKey, "AES", Cipher.SECRET_KEY);
System.out.println("unwrapped: " + Utils.toHex(key.getEncoded()));
}
/**
* Create a new Profile_ based on a newly generated key pair, with the new private key encrypted
* with the password.
*
* @param name name assigned to this profile object
* @param password password that encrypts the private key
* @throws Credential.Exception
*/
public Profile_(String name, char[] password) throws Credential.Exception {
//
// N.B. Credentials are never deleted, so the delete token created
// here will never be used (and thus there's no need to record its
// value).
//
super(CredentialObjectHandler.class, new TitanGuidImpl(), TitanObject.INFINITE_TIME_TO_LIVE);
this.name = name;
this.limited = false;
try {
KeyPairGenerator generator = KeyPairGenerator.getInstance(Profile_.KEY_TYPE);
generator.initialize(Profile_.KEY_SIZE);
KeyPair pair = generator.generateKeyPair();
this.publicKey = pair.getPublic();
Cipher cipher = getCipher(password, Cipher.WRAP_MODE);
this.encryptedPrivateKey = cipher.wrap(pair.getPrivate());
} catch (GeneralSecurityException ex) {
throw new Credential.Exception(ex);
}
}
protected final SecuredCEK secureCEK(
SecretKey toBeEncrypted, EncryptionMaterials materials, Provider cryptoProvider) {
Key kek;
if (materials.getKeyPair() != null) {
// Do envelope encryption with public key from key pair
kek = materials.getKeyPair().getPublic();
} else {
// Do envelope encryption with symmetric key
kek = materials.getSymmetricKey();
}
S3KeyWrapScheme kwScheme = cryptoScheme.getKeyWrapScheme();
String keyWrapAlgo = kwScheme.getKeyWrapAlgorithm(kek);
try {
if (keyWrapAlgo != null) {
Cipher cipher =
cryptoProvider == null
? Cipher.getInstance(keyWrapAlgo)
: Cipher.getInstance(keyWrapAlgo, cryptoProvider);
cipher.init(Cipher.WRAP_MODE, kek, cryptoScheme.getSecureRandom());
return new SecuredCEK(cipher.wrap(toBeEncrypted), keyWrapAlgo);
}
// fall back to the Encryption Only (EO) key encrypting method
Cipher cipher;
byte[] toBeEncryptedBytes = toBeEncrypted.getEncoded();
String algo = kek.getAlgorithm();
if (cryptoProvider != null) {
cipher = Cipher.getInstance(algo, cryptoProvider);
} else {
cipher = Cipher.getInstance(algo); // Use default JCE Provider
}
cipher.init(Cipher.ENCRYPT_MODE, kek);
return new SecuredCEK(cipher.doFinal(toBeEncryptedBytes), null);
} catch (Exception e) {
throw new AmazonClientException("Unable to encrypt symmetric key: " + e.getMessage(), e);
}
}
private static byte[] createEncryptedPreMaster(boolean fake) {
if (fake) {
// we do not have to do this calculation to force server to think
int len = ((RSAPublicKey) cert.getPublicKey()).getModulus().bitLength() / 8;
return new byte[len];
}
byte[] preMaster = new byte[48];
preMaster[0] = (byte) 3;
preMaster[1] = (byte) 1;
SecretKey preMasterKey = new SecretKeySpec(preMaster, "RAW");
Cipher rsa;
try {
rsa = Cipher.getInstance("RSA/ECB/PKCS1Padding");
rsa.init(Cipher.WRAP_MODE, cert.getPublicKey(), new SecureRandom());
return rsa.wrap(preMasterKey);
} catch (NoSuchAlgorithmException
| NoSuchPaddingException
| InvalidKeyException
| IllegalBlockSizeException e) {
e.printStackTrace();
throw new RuntimeException("Problem", e);
}
}
/**
* Encrypted a private key or public key with a password and returns the encypted key with the
* outputstream
*
* @param password The password used for encryption
* @param output The encrypted key
* @param key The public or private key
* @throws KOAException This exception will be thrown when there is a getting the key
*/
private void getKeyEncrypt(String password, OutputStream output, Key key) throws KOAException {
try {
// create a secret key with the password
PBEParameterSpec paramSpec = new PBEParameterSpec(SALT, 20);
PBEKeySpec keySpec = new PBEKeySpec(password.toCharArray());
SecretKeyFactory kf = SecretKeyFactory.getInstance(KEY_ENCRIPTION_AKGORITHM);
SecretKey passwordKey = kf.generateSecret(keySpec);
// encrypt the key
Cipher c = Cipher.getInstance(KEY_ENCRIPTION_AKGORITHM);
c.init(Cipher.WRAP_MODE, passwordKey, paramSpec);
byte[] wrappedKey = c.wrap(key);
// write the key to the stream
output.write(wrappedKey);
} catch (NoSuchAlgorithmException nsae) {
KOALogHelper.logError("KOAKeyPair.getKeyEncrypt", "Problem encrypting key", nsae);
throw new KOAException(ErrorConstants.SECURITY_KEYPAIR_ENCRYPT, nsae);
} catch (NoSuchPaddingException nspe) {
KOALogHelper.logError("KOAKeyPair.getKeyEncrypt", "Problem encrypting key", nspe);
throw new KOAException(ErrorConstants.SECURITY_KEYPAIR_ENCRYPT, nspe);
} catch (IllegalBlockSizeException iape) {
KOALogHelper.logError("KOAKeyPair.getKeyEncrypt", "Problem encrypting key", iape);
throw new KOAException(ErrorConstants.SECURITY_KEYPAIR_ENCRYPT, iape);
} catch (InvalidKeySpecException ikse) {
KOALogHelper.logError("KOAKeyPair.getKeyEncrypt", "Problem encrypting key", ikse);
throw new KOAException(ErrorConstants.SECURITY_KEYPAIR_ENCRYPT, ikse);
} catch (InvalidKeyException ike) {
KOALogHelper.logError("KOAKeyPair.getKeyEncrypt", "Problem encrypting key", ike);
throw new KOAException(ErrorConstants.SECURITY_KEYPAIR_ENCRYPT, ike);
} catch (InvalidAlgorithmParameterException iape) {
KOALogHelper.logError("KOAKeyPair.getKeyEncrypt", "Problem encrypting key", iape);
throw new KOAException(ErrorConstants.SECURITY_KEYPAIR_ENCRYPT, iape);
} catch (IOException ioe) {
KOALogHelper.logError("KOAKeyPair.getKeyEncrypt", "Problem encrypting key", ioe);
throw new KOAException(ErrorConstants.SECURITY_KEYPAIR_ENCRYPT, ioe);
}
}
public static void main(String[] args) {
try {
if (args[0].equals("-genkey")) {
KeyPairGenerator pairgen = KeyPairGenerator.getInstance("RSA");
SecureRandom random = new SecureRandom();
pairgen.initialize(KEYSIZE, random);
KeyPair keyPair = pairgen.generateKeyPair();
ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(args[1]));
out.writeObject(keyPair.getPublic());
out.close();
out = new ObjectOutputStream(new FileOutputStream(args[2]));
out.writeObject(keyPair.getPrivate());
out.close();
} else if (args[0].equals("-encrypt")) {
KeyGenerator keygen = KeyGenerator.getInstance("AES");
SecureRandom random = new SecureRandom();
keygen.init(random);
SecretKey key = keygen.generateKey();
// wrap with RSA public key
ObjectInputStream keyIn = new ObjectInputStream(new FileInputStream(args[3]));
Key publicKey = (Key) keyIn.readObject();
keyIn.close();
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.WRAP_MODE, publicKey);
byte[] wrappedKey = cipher.wrap(key);
DataOutputStream out = new DataOutputStream(new FileOutputStream(args[2]));
out.writeInt(wrappedKey.length);
out.write(wrappedKey);
InputStream in = new FileInputStream(args[1]);
cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, key);
crypt(in, out, cipher);
in.close();
out.close();
} else {
DataInputStream in = new DataInputStream(new FileInputStream(args[1]));
int length = in.readInt();
byte[] wrappedKey = new byte[length];
in.read(wrappedKey, 0, length);
// unwrap with RSA private key
ObjectInputStream keyIn = new ObjectInputStream(new FileInputStream(args[3]));
Key privateKey = (Key) keyIn.readObject();
keyIn.close();
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.UNWRAP_MODE, privateKey);
Key key = cipher.unwrap(wrappedKey, "AES", Cipher.SECRET_KEY);
OutputStream out = new FileOutputStream(args[2]);
cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, key);
crypt(in, out, cipher);
in.close();
out.close();
}
} catch (IOException e) {
e.printStackTrace();
} catch (GeneralSecurityException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}