privatestaticvoidgenerateKeyPair()throwsNoSuchAlgorithmException { // KeyPairGenerator 类用于生成公钥和私钥对,基于RSA算法生成对象 KeyPairGeneratorkeyPairGen=KeyPairGenerator.getInstance(ALGO); // 初始化密钥对生成器,密钥大小为 96-1024 位 keyPairGen.initialize(1024,newSecureRandom()); // 生成一个密钥...
publicstaticfinalStringKEY_ALGORITHM="RSA";publicstaticfinalStringSIGNATURE_ALGORITHM="SHA256withRSA";publicstaticPair<PublicKey, PrivateKey>genKeyPair()throwsException {// KeyPairGenerator类用于生成公钥和私钥对,基于RSA算法生成对象KeyPairGeneratorkeyPairGen=KeyPairGenerator.getInstance("RSA");// 初始化密...
public static byte[] decryptByPublicKey(byte[] encryptedData) throws NoSuchAlgorithmException, NoSuchPaddingException, IOException, InvalidKeyException, ClassNotFoundException, IllegalBlockSizeException, BadPaddingException { ObjectInputStream objectInputStream=new ObjectInputStream(new FileInputStream(PUBLCIKEY))...
Cloud Studio代码运行 importjava.security.KeyFactory;importjava.security.KeyPair;importjava.security.KeyPairGenerator;importjava.security.NoSuchAlgorithmException;importjava.security.PrivateKey;importjava.security.PublicKey;importjava.security.interfaces.RSAPrivateKey;importjava.security.interfaces.RSAPublicKey;import...
importjava.security.*;importjava.security.spec.PKCS8EncodedKeySpec;importjava.security.spec.X509EncodedKeySpec;importjava.util.Base64;publicclassRSAExample{// 生成密钥对publicstaticKeyPairgenerateKeyPair()throws NoSuchAlgorithmException{KeyPairGenerator keyPairGenerator=KeyPairGenerator.getInstance("RSA");key...
KeyPair ret = null; try { //1、准备生成 KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA"); //2、初始化,设置秘钥长度 generator.initialize(keySize); //3、生成,并且返回 ret = generator.generateKeyPair(); } catch (NoSuchAlgorithmException e) { ...
public static final String RSA_ALGORITHM = "RSA"; public static Map<String, String> createKeys(int keySize){ //为RSA算法创建一个KeyPairGenerator对象 KeyPairGenerator kpg; try{ kpg = KeyPairGenerator.getInstance(RSA_ALGORITHM); }catch(NoSuchAlgorithmException e){ ...
* @return KeyPair keyPair * @throws NoSuchAlgorithmException */ private static KeyPair generateKeyPairs() throws NoSuchAlgorithmException { // 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 ...
(ALGORITHM);cipher.init(Cipher.ENCRYPT_MODE,publicKey);int inputLen=data.getBytes().length;ByteArrayOutputStream out=newByteArrayOutputStream();int offset=0;byte[]cache;int i=0;// 对数据分段加密while(inputLen-offset>0){if(inputLen-offset>MAX_ENCRYPT_BLOCK){cache=cipher.doFinal(data.getBytes(...
SecretKeySpec keySpec = createKey(key); // 设置算法/模式/填充方式 Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); // 设置偏移 IvParameterSpec iv = new IvParameterSpec(ivSeed.getBytes(StandardCharsets.UTF_8)); // 加密模式 ...